Coating metallic material and coating material with metallic material and chemical surface treatment and diffusion treatment of metallic material and coating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general and inhibiting corrosion of metallic material or incrustation in general (C23)

C   Chemistry; metallurgy(311501)
C23            Coating metallic material; coating material with metallic material; chemical surface treatment; diffusion treatment of metallic material; coating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general; inhibiting corrosion of metallic material or incrustation in general(12739)
ethod of forming on surface of articles from nickel alloy composite coating // 2607677
FIELD: aviation.SUBSTANCE: invention relates to sputtering of heat shielding coatings and can be used in aircraft engineering and other fields of industry in production of parts of turbine engines and plants. Method of forming on surface of articles made from nickel alloy a composite coating containing zirconium oxide, comprises sputtering a zirconium oxide film to achieve required thickness, wherein prior to sputtering said film on article surface a primary continuous layer of nickel alloy is formed, which corresponds to composition of said article with zirconium and with addition of a stabilising element and a gradient transition nanocomposite layer with a metal-oxide structure. Formation of said primary layer and gradient transition nanocomposite layer is carried out using a magnetron system with two combined sputtering magnetrons. Using first magnetron a target made of said nickel alloy is sputtered, and using a second magnetron a second target made of zirconium with addition of stabilising element is sputtered. Said primary layer is formed by combined sputtering of said targets in an argon atmosphere, wherein intensity of atomic flux formed from said first target is greater than intensity atomic flux from said second target. Method then includes formation of a gradient transition nanocomposite layer by sputtering said targets in presence of oxygen to form said gradient layer of zirconium oxide in non-oxidised nickel alloy. Ratio of phases in gradient transition layer is varied with increase of share of oxide phase with increase in thickness of said layer, oxygen partial pressure during sputtering is smoothly increased to 1.5 * 10-3 Pa, and power of first magnetron, sputtering first target from said nickel alloy, is reduced up to its complete disconnection, a smooth transition from layer of nickel alloy to film of zirconium oxide without interphase boundaries of macroscopic size is obtained.EFFECT: providing mechanical strength of coating, high heat resistance, as well as high adhesion and cohesion of coating on working surfaces of articles.1 cl
ethod for preparation of polyimide surface for chemical metal coating // 2607627
FIELD: manufacturing technology.SUBSTANCE: invention relates to methods for production of flexible printed circuit boards, connection cables, trains, microcircuits. Method for preparation of polyimide surface for chemical deposition of copper coating is disclosed, which involves polyimide etching with aqueous solution of alkali, containing 150–250 g/l of NaOH or KOH, at temperature of 60±2 °C during 5–15 minutes with subsequent activation with water solutions of silver nitrate of composition 3–5 g/l for 10–15 minutes at room temperature.EFFECT: proposed technology of chemical application of conductive coating is easier, more efficient and chemically and environmentally safer than known level of equipment.1 cl, 7 ex
ethod of thermodiffusion zinc coating fasteners from bainite class steels with simultaneous increase of cold resistance thereof // 2607505
FIELD: chemistry.SUBSTANCE: invention relates to chemical-thermal treatment of items, specifically, to technology of thermodiffusion zinc coating of fasteners made from bainite class steels, intended for production of parts and assemblies, operating under conditions of Far North and Siberia, for example, in loaded threaded joints of bridges, bulldozers, excavator for mining operations, offshore drilling rigs, ice ships. Method of thermodiffusion zinc coating fasteners made from bainite class steel, subjected to quenching and subsequent high tempering, includes placing parts in rotary drum of heating furnace with charge, containing zinc powder, alumina and activated carbon, heating to temperature of 450±10 °C and holding at said temperature until extraction and coagulation of tertiary cementite, wherein content of zinc powder is determined from relationship: m=0,36τ2-6τ+30, wherein m is zinc content in % of charge weight, τ is duration of thermodiffusion zinc coating.EFFECT: higher cold resistance of fastener and creation on its surface of a corrosion- and wear-resistant diffusion zinc coating.1 cl, 1 dwg, 3 tbl
ethod of coatings application by plasma spraying and device for its implementation // 2607398
FIELD: technological processes.SUBSTANCE: invention relates to coatings ion-plasma sputtering on items in vacuum method and device for its implementation and can be used in metallurgy, plasma chemistry and machine-building industry. Items are placed inside plasma device comprising target from sputtered material. Performing imposition of configured electric and magnetic fields under conditions of glowing plasma discharge, plasma flow compression and its local focusing in target top center to form local plasma spot within 1 mm2 on its surface. Device includes plasma cell placed inside vacuum chamber and during operation filled with plasma-forming gas. Cell is formed between two parallel arranged plates and comprises aligned cathode, target from sprayed material, anode and focusing electrodes. Cathode is made in form of rod-shaped target holder. Sputtering items are fixed in one of focusing electrodes. Cathode with target is installed inside hollow cylindrical magnet having axial magnetization.EFFECT: result is production of high quality coating while reducing device power consumption.2 cl, 2 dwg
ethod of forming ceramic coating based on zirconium dioxide on article from titanium alloy // 2607390
FIELD: technological processes.SUBSTANCE: invention relates to production of ceramic coatings by electroplasma sputtering on articles from titanium alloys and can be used in instrument-making and machine building, in particular, in parts of compressors and turbines of gas-turbine engines, implanted medical structures. Method of forming a ceramic coating based on zirconium dioxide on an article from a titanium alloy includes electroplasma sputtering a dioxide-based coating and its modification by micro-arc oxidation in an aqueous alkaline electrolyte based on sodium hydroxide with the concentration of 1–3 g/l in the anode mode at the constant current density of (2–2.5)×103 A/m2 for 20–30 minutes.EFFECT: technical result is improved adhesion and microhardness of the coating based on zirconium dioxide.1 cl, 2 dwg, 2 tbl, 1 ex
ethod of determining effective thickness of diffusion layer // 2607297
FIELD: measurement technology.SUBSTANCE: invention relates to a method of determining effective thickness of a diffusion layer on a metal article. Plasma discharge of a specified duration effects on the surface of a diffusion layer of the article, herewith measured is the spectral line intensity to determine the content of the diffusing element and analyzed is the distribution of values of this component content in the diffusion layer. Before the said effect of plasma discharge made is a flat section of the diffusion layer of the article at a specified angle to the surface of saturation, and after the said effect of plasma discharge the distance is measured between the surface of saturation and points of the plasma discharge effect on the surface of the flat section of the diffusion layer of the article. Measured distance is used to obtain the diffusing element content values distribution through the diffusion layer thickness. As the result of analysis of the diffusing element content values distribution in the diffusion layer depending on the required values of concentration of the diffusing element in the diffusion layer the derived values of the diffusing element content distribution through the thickness of the diffusion layer are used to determine the effective thickness of the diffusion layer. In particular cases the flat section of the diffusion layer is made at an angle less than 10 angular minutes to the surface of saturation. Said plasma discharges are excited with the same exposure time for burning craters of a specified depth. Said plasma discharges are excited for burning the diffusion layer.EFFECT: provided is increased accuracy of determining effective thickness of a diffusion layer on metal articles after thermodiffusion zinc coating as the result of the possibility of fixing the continuous dependence of the diffusing element distribution through the diffusion layer thickness.4 cl, 4 dwg, 2 tbl
ethod for gas-discharge sputtering of films // 2607288
FIELD: technological processes.SUBSTANCE: invention relates to a method of gas-discharge formation of films. By means of high-voltage pulses with pulse duration at half-height of not more than 10 ns and rise time of not more than 4 ns, a discharge is formed, which is initiated by an electron beam in gas media at pressure of 100 Torr to atmospheric pressure. In gap between high-voltage sputtered electrode with a head, which has a curvature radius equal to 0.2 mm, and conducting surface for sputtering, which is simultaneously exposed to electron beam, shock wave, ultraviolet and vacuum UV plasma radiation accompanying discharge.EFFECT: simplified procedure of sputtering a film.1 cl, 2 dwg, 1 ex
Charge composition for slurry coatings // 2607278
FIELD: technological processes.SUBSTANCE: invention relates to production of materials, particularly to charge compositions for slurry coatings when forming protective coatings for structural materials used in power engineering, machine building, space, nuclear engineering and other industries. Charge for slurry coatings containing a filler and a binder additionally contains copper oxide, herewith the filler used is a fine powder of refractory materials with the following proportions, wt%: fine powder of refractory materials 70–90, copper oxide 5–7, binder 3–23, herewith the binder used is hydroxyethyl cellulose, sodium or potassium silicate and water in the following proportions, wt%: hydroxyethyl cellulose 6.5–7, sodium or potassium silicate 27–30, water – the rest.EFFECT: invention provides higher quality of a built-up layer.1 cl
Substrate holder // 2607110
FIELD: household appliances.SUBSTANCE: invention relates to microwave equipment and can be used for production of holders for substrates, on which films or coatings of different materials, in particular, carbon (diamond) films or coatings are being formed by plasma chemical vapour-phase deposition. Substrate holder is made in the form of a disk of refractory high-temperature transition metal, and the upper surface of the holder is polished, and the lower surface of the holder has annular grooves formed by concentric circles. Between the annular grooves there are outer and central heat-removing elements in the form of annular ledges and central heat-removing element, which is a ledge in the form of a circle.EFFECT: higher uniformity of distribution of temperature field on the surface of the holder, which provides uniform thickness growth of the film.11 cl, 3 dwg, 2 ex
ethod of applying thermal-protective composite coating // 2607056
FIELD: aviation.SUBSTANCE: invention relates to spraying of heat shielding coating and can be used in aircraft engineering and other fields of industry in production of parts of turbine engines and plants. Method of applying thermal-protective composite coating containing zirconium oxide on surface of articles made from nickel alloy involves formation on surface of said article a composite gradient transition layer with a metal oxide structure and sputtering a zirconium oxide film to achieve required thickness. Formation of said gradient transition layer with a metal oxide structure is carried out by deposition of gradient transition layer containing metal phase based on nickel alloy, which corresponds to composition of said article surface, and a dielectric phase containing zirconium oxides of different stoichiometry, ratio of phases in gradient transition layer is varied with increase of share of oxide phase as film thickness increases. Method uses a magnetron system with two magnetrons, wherein first magnetron is used to sputter first target made from nickel alloy, and second magnetron is used to sputter second target made of zirconium with additives of stabilising elements. Gradient transition layer is formed by sputtering said targets. First, target sputtering is carried out in an argon atmosphere with provision of excess intensity atomic flux formed from said first target, over intensity of atomic flux from said second target with formation of solid metal layer. Method then includes sputtering in presence of oxygen with formation of zirconium oxide in sputtered film with non-oxidised nickel alloy. During sputtering, partial oxygen pressure is smoothly increased to 1.5⋅10-3 Pa, and power of first magnetron, sputtering first target made from nickel alloy, is reduced up to its complete disconnection.EFFECT: providing mechanical strength of coating, high heat resistance, as well as high adhesion and cohesion of coating on working surfaces of articles.1 cl
ethod of applying thermal-protective composite coating containing zirconium oxide on metal surface of article // 2607055
FIELD: aviation.SUBSTANCE: invention relates to spraying of heat shielding coating and can be used in aircraft engineering and other fields of industry in production of parts of turbine engines and plants. Method of applying thermal-protective composite coating, containing zirconium oxide, on metal surface of an article involves formation on metal surface of a composite metal-oxide structure with combined sputtering of metals and sputtering zirconium oxide film to achieve required thickness. In obtained coating, containing zirconium oxide stabilised by yttrium, a gradient transition layer is formed, containing two phases in form of metal phase with composition corresponding to composition of protected surface, and dielectric phase containing zirconium oxide, ratio of phases in transition layer is varied with increase of share of oxide phase as film thickness increases. To obtain said gradient transition layer, a magnetron with two magnetrons is used. Using first magnetron, first target made from nickel alloy is sputtered, composition of which corresponds to composition of metal article and second magnetron is used to sputter second target made of zirconium with yttrium additives. Initial sputtering of targets is performed in argon medium, intensity of atomic flux formed from first target made from said nickel alloy, exceeds intensity of atomic flux from second zirconium target. After formation of primary solid layer of nickel alloy, oxygen is fed into working chamber with provision of reactive sputtering with formation in sputtered zirconium oxide film in non-oxidised nickel alloy, wherein during sputtering oxygen partial pressure is smoothly increased to 1.5⋅10-3 Pa, and power of first magnetron, sputtering first target made from said nickel alloy, is reduced up to its complete disconnection.EFFECT: providing mechanical strength of coating, high heat resistance, as well as high adhesion and cohesion of coating on working surfaces of parts.1 cl
Stripping process for hard carbon coatings // 2606899
FIELD: chemistry.SUBSTANCE: invention relates to methods for reactive stripping of carbon layers from surface of a substrate. Substrate to be de-coated is placed on a substrate holder in a vacuum chamber, vacuum chamber is charged with at least one reactive gas supporting stripping of carbon in gaseous form, and a plasma discharge is initiated in vacuum chamber to support necessary chemical reaction or reactions to strip coated substrate, and de-coating proceeds in at least one step. Plasma discharge is produced as a low voltage direct current arc discharge, with discharge current between 20 A and 1,000 A and discharge voltage of at most 120 V. To remove at least part of carbon coating from substrate during at least one reactive de-coating step, reaction gas used is nitrogen-containing gas. Carbon coat together with carbon may contain non-metallic elements in form of hydrogen, boron, silicon and/or germanium.EFFECT: providing industrially suitable stripping of carbon coating layers while preventing sputtering of substrate material.10 cl, 3 dwg, 1 tbl, 7 ex
ethod of forming on working surface of part made from nickel alloy thermal-protective nanocomposite coating // 2606826
FIELD: aviation.SUBSTANCE: invention relates to sputtering of heat shielding coatings and can be used in aircraft engineering and other fields of industry in production of parts of turbine engines and plants. Method of forming on working surface of parts made from nickel alloy a thermal-protective nanocomposite coating containing zirconium oxide, comprises pre-machining surface of part made from nickel alloy, forming a primary solid layer of nickel alloy, which corresponds to composition of said part, with zirconium and with addition of stabilising a element, subsequent formation of a gradient transition nanocomposite layer with a metal-oxide structure and sputtering a zirconium oxide film to achieve required thickness. Formation of said primary layer and gradient transition nanocomposite layer is carried out using a magnetron system with combined sputtering using two magnetrons. Using first magnetron a target made of said nickel alloy is sputtered, and using a second magnetron a second target made of zirconium with addition of stabilising element is sputtered. Said primary layer is formed by sputtering said targets in an argon atmosphere. Intensity of atomic flux formed from said first target is greater than intensity of atomic flux from said second target. Method then includes forming a nanocomposite gradient transition layer by sputtering said targets in presence of oxygen to make said gradient layer of zirconium oxide and non-oxidised nickel alloy, wherein ratio of phases in gradient transition layer is varied with increase of share of oxide phase as thickness of said layer increases, oxygen partial pressure during sputtering is smoothly increased to 1.5⋅10-3 Pa, and power of first magnetron, sputtering first target from said nickel alloy, is reduced up to its complete disconnection. Smooth transition is obtained from layer of nickel alloy to zirconium oxide film without interphase boundaries of macroscopic size.EFFECT: providing mechanical strength of coating, high heat resistance, as well as high adhesion and cohesion of coating on working surfaces of parts.1 cl
ethod of applying thermal-protective composite coating containing zirconium oxide, on metal surface of article // 2606815
FIELD: engines and pumps, heat exchange.SUBSTANCE: method of applying thermal-protective composite coating containing zirconium oxide on metal surface of an article involves formation on metal surface of a composite metal-oxide structure by combined sputtering of metals, wherein obtained coating of zirconium oxide is stabilised by yttrium and a gradient transition layer is formed, containing two phases in form of metal phase with composition corresponding to composition of protected surface, and dielectric phase containing zirconium oxide stabilised with yttrium, deposited on said metal phase. Phase ratio in transition layer varies with increase in proportion of oxide phase with increasing film thickness. Gradient transition layer is formed using a magnetron system with two magnetrons, first magnetron is used to sputter a target made of nickel alloy, which corresponds to composition of metal article, and second magnetron is used to sputter a target made of zirconium with additives of stabilising yttrium element. Initial sputtering of targets is carried out in an argon atmosphere, wherein intensity of atomic flux formed from said first target is greater than intensity of atomic flux from said second target. After formation of primary solid layer of nickel alloy, oxygen is fed into working chamber to ensure jet spraying to form sprayed zirconium oxide film at non-oxidised nickel. In process of sputtering oxygen partial pressure is gradually increased to 1.5⋅10-3 Pa, and power of first magnetron, sputtering first target from nickel alloy, is reduced up to its complete disconnection, then sputtering of zirconium oxide continues until film of required thickness is achieved. When performing said operations, a smooth transition is formed from said layer of nickel alloy to a film of zirconium oxide with mechanical properties, smoothly varying thickness of obtained layer with isotropic distribution of internal stresses at cyclic thermal loads.EFFECT: higher mechanical strength of coating, high heat resistance, as well as high adhesion and cohesion.1 cl
Heat-protective nanocomposite coating and formation method thereof // 2606814
FIELD: engines and pumps; heat exchange.SUBSTANCE: heat-protective nanocomposite coating containing zirconium oxide, deposited on surface of articles from nickel alloy using magnetron system comprises primary continuous layer, gradient transition layer and film of zirconium oxide. Primary continuous layer consists of a nickel alloy, which corresponds to composition of said articles with zirconium and with additives of stabilising element. Gradient transition layer consists of two phases in form of a dielectric phase of zirconium oxide and metal phase of nickel alloy, which corresponds to composition of said article surface, and zirconium with addition of stabilising element, wherein fraction of oxide phase in transition layer increases with increase of its thickness. Method of forming said thermal-protective nanocomposite coating on surface of articles from nickel alloy is characterised by that it includes forming on surface of article a primary solid layer of nickel alloy, which corresponds to composition of said article with zirconium and with addition of stabilising element, gradient transition layer and sputtering a film of zirconium oxide until it reaches required coating thickness. Formation of said primary layer and gradient transition layer is carried out using magnetron system with two magnetrons. Using first magnetron a target made of said nickel alloy is sputtered, and using a second magnetron a second target made of zirconium with addition of stabilising element is sputtered. Said primary layer is formed by sputtering said targets in an argon atmosphere at intensity of atomic flux formed from said first target greater than intensity atomic flux from said second target. Then, formation of said gradient transition layer by sputtering said targets in presence of oxygen with formation in transition layer of zirconium oxide and non-nickel alloy. Oxygen partial pressure during sputtering is gradually increased to 1.5*10-3 Pa, and power of first magnetron, sputtering first target from said nickel alloy, is reduced up to its complete disconnection. In a particular embodiment, stabilising element used is a yttrium.EFFECT: higher mechanical strength of coating, high heat resistance, as well as high adhesion and cohesion.3 cl
ethod for production of compact layer of enamel coating on cast articles // 2606774
FIELD: metal processing.SUBSTANCE: invention relates to production of enamel coating on cast metal articles by applying layers of enamel in powder form in electric field and firing. Method comprises applying on a cleaned surface of a metal article an enamel primer layer in form of powder in an electric field using sprayers until layer thickness reaches 100–150 mcm, then electric field is interrupted for reduction of space charge around metal article, followed by similar application of least two layers of powder coating enamel until total thickness of powder layer of enamel reaches a minimum of 750 mcm, wherein electric field is interrupted every time between steps of applying powder coating enamel, wherein interruption of electric field around metal article is performed by moving article to another application location.EFFECT: method enables to create on metal articles in an electric field layers of enamel powder enabling, after firing, to obtain a compact layer of enamel coating on cast metal articles.3 cl, 1 ex
ethod of ion-plasma sputtering of metal cathode on polymer film and device therefor // 2606750
FIELD: chemistry.SUBSTANCE: invention relates to technology of ion-plasma sputtering and can be used for production of filter elements used in medicine, as well as chemical, metallurgical and mining industries. Method of ion-plasma sputtering a metal cathode on a polymer film includes cleaning surface of polymer film, equipment and walls of working chamber and deposition of a functional coating on said polymer film, wherein polymer film with tension is placed on outer surface of a hollow drum whose cavity is used for circulation of medium, cooling polymer film during cleaning and deposition of functional coating. Polymer film is placed on outer surface of hollow drum with tension by means of tension rods. Cleaning of polymer film, equipment and walls of working chamber is performed at discharge current 30–60 A of low-temperature argon plasma and when unwinding polymer film, wound on rotating drive rod, on other rotating drive rod through outer surface of fixed drum with permanent tension and at a rate of 1 cm/min. After complete unwinding of polymer film from one drive rod onto other, cleaning is repeated until pressure in working chamber is equal to (1–4)⋅10-4 mm Hg, then, without switching off said plasma, an arc is ignited on consumable cathode and functional coating is applied while maintaining electric potential on drum in range from 0 to -250 V and at temperature of polymer film in range of 50 °C + 150 °C. Device for ion-plasma sputtering of metal cathode on polymer film comprises a working chamber for ion-plasma sputtering, plasma sources installed therein,a hollow metal drum arranged therein, on outer surface of which with tension a polymer film is arranged to move when cleaning its surface, equipment and walls of working chamber in medium of low-temperature argon plasma and during deposition of functional coating on polymer film, wherein polymer film moves ahead of consumable metal cathode. Device also includes two drive rods configured for rotation, on one of which is wound polymer film, and two freely rotating rods, equipped with locking device to provide for required tensioning of polymer film relative to outer surface of fixed hollow drum.EFFECT: providing directional synthesis of functional coatings of large format, specified composition and structure with controlled content of impurities of oxygen and good adhesion.2 cl, 1 dwg
ethod of amorphous silicon coating producing on metal substrate internal surface // 2606690
FIELD: technological processes.SUBSTANCE: present invention relates to amorphous silicon coating on metal substrate internal surface producing method and can be used in gas-bearing systems natural gas samples taking and keeping for preparation of substrate, for example, gas storage vessel or supply pipeline, in oil and gas industry products quality control systems, in commercial metering units, in quantity and quality parameters measurement systems of gas and liquefied petroleum gases in gas main lines. Performing substrate inner surface cleaning with organic solvent and its activation with mineral acid or alkali solution, silicon precursor feeding into substrate in form of silicon hydride in amount from 5 vol% to 30% vol. with mixing with inert gas in form of argon, helium, mixtures thereof or nitrogen and silicon hydride decomposition at temperature from 600 °C to 1,000 °C during from 3 to 240 minutes. In particular cases of invention implementation, supply of silicon precursor into substrate is repeated until achievement of required coating thickness with intermediate substrate blowing with inert gas. Mixture of gases produced after decomposition reaction, is repeatedly used as carrier gas.EFFECT: providing higher quality of metal substrate internal surface coating with reduction of costs.3 cl, 1 ex
ethod of combined chemical-thermal processing of structural hot-strength steel // 2606683
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, in particular, to a method of combined chemical-thermal processing of parts from a hot-strength steel intended for making high-loaded gears of reduction gears for aviation equipment serviceable at heating in the contact zone of up to 500 °C. Performed is preliminary thermal processing by normalizing at the temperature of (950±10) °C with air cooling, high tempering at the temperature of (650±10) °C with maintaining for 3 hours, cooling in the air, hardening in oil at the temperature of (960±10) °C, repeated high tempering at the temperature of (660±10) °C with maintaining for 3 hours and cooling in the air. That is followed be vacuum cementation at the temperature of 940°C and thermal hardening by quenching, intermediate temperings, cold processing and repeated tempering. After thermal hardening the saturated carbide zone is removed from the cemented layer surface by grinding to the depth of 0.2–0.25 mm, after which gas nitriding is performed at (480–500) °C.EFFECT: provided is significantly increased contact service life (the main characteristic for heavily loaded gears), fatigue strength and wear resistance.1 cl, 1 dwg, 1 tbl, 1 ex
Coating with high resistance to corona discharge, as well as method for production thereof // 2606447
FIELD: manufacturing technology.SUBSTANCE: invention relates to coating for polymer insulating material and method for production thereof. Such coatings can be applied both on three-dimensional parts, and on sheet materials such as films and woven materials. Coating contains from 1 to 10 layers and is silica, wherein coating contains main silicate structural unit with organic residues, due to which it can be applied on flexible substrates. Thickness of individual layer in coating varies from 0.1 to 100 mcm, individual layers are obtained by wet chemical method from precursors, which are silane, siloxane and/or silicate, wherein organic residues content inside coating varies from layer to layer, so that inorganic fragments content of Si-0 inside coating increases to outside, i.e. according to distance from substrate.EFFECT: technical result consists in obtaining coatings with improved resistance to corona discharge.8 cl, 1 ex
Carousel-type unit for multi-layered coatings magnetron sputtering and method of equal thickness nano-coating magnetron sputtering // 2606363
FIELD: technological processes.SUBSTANCE: invention relates to multi-layer equal thickness coating magnetron sputtering method and device for its implementation and can be used for optical coatings producing on optical substrates surface. Sequential application on part flat surface of two layers with complementary profiles and obtaining of equal thickness coating is performed in vacuum chamber with carousel planetary mechanism by means of magnetron system. System comprises two magnetrons with targets, symmetrically and inclined arranged to vacuum chamber frontal plane and facing with their targets towards carousel planetary mechanism and single magnetron with target. One coating layer is sputtered as symmetrical convex with single magnetron, performing inner gear wheel and said planetary gear drive reverse synchronous rotation in one direction and synchronous pinion reverse rotation in opposite direction in drive and inner gear wheel calculated range of turning angles. Pinion is rotated at angular speed by absolute value of less than drive angular rotation speed. Second coating layer is sputtered as symmetric concave by means of dual system two magnetrons, performing inner gear wheel and drive synchronous reverse rotation in one direction and synchronous pinion reverse rotation in same direction in rotation angles calculated range, different from drive rotation angles and inner gear wheel during performance of first coating layer. Pinion is rotated at angular speed by absolute value greater, than drive angular rotation speed. Producing coating with high degree of accuracy, wherein deviation of its thickness from theoretically calculated makes 0.1 nm.EFFECT: coating with high degree of accuracy.3 cl, 9 dwg, 1 ex
ethod of producing alloyed powders in vibrofluidised bed // 2606358
FIELD: metallurgy.SUBSTANCE: invention relates to powder metallurgy, particularly, to alloyed powder, and can be used in various engineering fields, particularly for gas-thermal spray coating. Method of producing alloyed metal powder includes mixing alloying powder with base powder and chemical-thermal treatment with provision of diffusion bonding of alloying powder particles with base powder, mixing base powder of fractional composition 0.5–500 mcm and fine alloying powder, heating produced mixture to temperature not exceeding temperature of exothermic effect of mixture, wherein heating, chemical-thermal treatment and cooling of mixture is carried out in a vibrofluidised bed in presence of an activator.EFFECT: higher quality of powders with simplification of technology and reduction of time for preparing them.8 cl, 2 dwg, 2 tbl, 2 ex
Composition for chemical treatment of ferrous metal surfaces before painting with zinc silicate compositions // 2606356
FIELD: metallurgy.SUBSTANCE: invention relates to chemical treatment of surfaces of ferrous metals before painting and can be used for protection of metal structures from corrosion by zinc silicate paints and primers. Composition for chemical treatment of surface of ferrous metals before painting with zinc silicate compositions contains following components, wt%: phosphoric acid (p = 1.8 g/cm3) 40–50, glycerol 10–15, talc or kaolin 30–35, sodium chloride 0.5–1.0, zinc chloride 0.05–0.10, water – balance.EFFECT: higher quality of treated surface, providing high physical and chemical characteristics of zinc silicate coating, such as adhesion, water resistance and others.1 cl, 1 tbl
ethod of chemical heat treatment of parts from titanium-based alloy // 2606352
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, particularly to methods of chemical and heat treatment of parts from titanium-based alloy, and can be used in mechanical engineering for machines parts surface strengthening, including parts, operating in friction pairs. Method for chemical heat treatment of parts made from titanium-based alloy comprises placing part in working chamber, activation of surface of part before chemical heat treatment, feed a working saturating medium into chamber, heating to temperature of chemical heat treatment and holding at said temperatures to form required thickness of diffusion layer. Activation of surface of part before chemical heat treatment is carried out by means of ion-implantation treatment of surface of part at ion power from 30 to 40 Kev, with dose from 1.4⋅1017 cm-2 to 1.8⋅1017 cm-2, at dose build-up rate of 0.7⋅1015 s-1 up to 1⋅1015 s-1, wherein implanted ions are ions of following elements: C, N, or combinations thereof. In particular cases, chemical heat treatment of part is performed by ion-plasma nitriding or ion-plasma cementation or ion-plasma carbonitriding.EFFECT: higher efficiency and quality of chemical heat treatment, higher wear resistance of parts after chemical-thermal treatment.3 cl, 1 ex
Items vacuum treatment device and method // 2606105
FIELD: machine building.SUBSTANCE: invention relates to items vacuum treatment plant and method of vacuum processing using said plant. Proposed plant is designed for treatment of items, fixed on carrousel (205), arranged on carrousel slides (201). Said carrousel comprises vacuum chamber (303) with door (305) and drive (101). Vacuum chamber has at least one rear thrust (309) and at least one front thrust (311), which at complete introduction of carrousel slides (201) into vacuum chamber (303) and at closed door (305) provide kinematic connection of carrousel drive (101) with carousel (205). Carrousel drive (101) is located in vacuum chamber (303) on its wall, opposite to door (305). Said method involves introduction of carrousel slides (201) with carousel (205) on them into vacuum chamber (303) open door (305), closing door (305) of vacuum chamber (303), its pumping out and performance of vacuum treatment. Carrousel slides (201) with carousel (205) on them with articles fixed onto it are preliminary placed on trolley rails and bringing this trolley with said carousel on it to open door (205) of vacuum chamber (303). After said door (305) closing carousel slides (201) are fixed by means of said at least one rear thrust (309) and at least one front thrust (311).EFFECT: enabling simple connection of carousel to its drive.4 cl, 4 dwg
Diagnostic technique of oil vapors presence in vacuum chamber volume // 2605884
FIELD: instrument making.SUBSTANCE: invention relates to vacuum coatings on optical parts application technique. Diagnostic technique of oil vapors presence in vacuum chamber volume before application of vacuum coating on optical parts includes placement of cleaned control glass plate prior to optical components loading into vacuum chamber, air evacuation from vacuum chamber, extraction of control glass plate outside, wiping of its surface half with optical mixture for removal of settled oil film and providing of moisture condensation on control glass plate analyzed surface. Then performing visual comparison of surface both parts and in case of differences in control glass plate two halves surfaces appearance presence of oil film on glass plate surface unwiped half is diagnosed, which indicates inadmissibility of optical components for application of coating loading into vacuum chamber.EFFECT: enabling higher quality of sputtered coatings on optical parts surfaces.1 cl
ethod for chemical nickel plating of aluminium contact pads before immersion plating // 2605737
FIELD: chemistry.SUBSTANCE: invention relates to chemical nickel plating and can be used for metal coating of aluminium contact sites before immersion plating. Method involves etching aluminium contact pads with subsequent hot and cold flushing, treatment in nitric acid, followed by washing, zincate treatment and chemical deposition of nickel coating of hypophosphite solution. Treatment in nitric acid, followed by washing and zincate treatment of contact pads is performed twice, after zincate treatment is followed by hot and cold washing. Etching is carried out in 5 % solution of caustic soda at temperature 38-43 °C for 10-60 s, treatment in nitric acid is carried out in 32.5 %-solution for 10-50 s, and zincate treatment is carried out for 10-50 s in a solution containing, g/dm3: zinc oxide - 50, sodium hydroxide - 250. Nickel coating is applied at temperature of 80-95 °C with subacidic hypophosphite solution with pH 5.0-6.0, containing, g/dm3: nickel sulphate in terms of Ni2+ - 4.5-6.0, sodium hypophosphite - 20-25, amino acetic acid - 7-20, sodium acetate - 10-15, wherein method comprises performing processes in solutions at loading density 0.5-2.5 dm2/dm3.EFFECT: higher density and uniformity of thickness of contact deposited zinc.1 cl

Anode earthing device // 2605731
FIELD: electricity.SUBSTANCE: invention relates to metal structures electrochemical protection against corrosion in soil and can be used for subsurface and surface anode earthing production. Anode earthing electrode comprises cast electrode and current lead wire connected to it by means of contact unit, cast electrode has shape of hollow cylinder with external diameter of 70-80 mm and internal diameter of 35-40 mm, with open end face and through channels with cross section shape in form of rectangle with rounded edges and length of 10-15 mm and width of 5-7 mm, wherein channels are arranged in vertical rows with uniform pitch, in rows initial points arrangement displacement alternates in one row through distance, equal to pitch half, and angle between rows longitudinal axes is 120°, electrode inner space is filled with moisture adsorbing material, contact unit is equipped with insulating shell.EFFECT: anode earthing device provides stable electrochemical protection under conditions of soil moisture content reduction.8 cl, 3 dwg

ethod of producing multilayer composite coatings // 2605717
FIELD: metallurgy.SUBSTANCE: invention relates to metal science, chemical-thermal treatment of metal articles, to production of structural purpose nano-structured wear-resistant materials and can be used for machines parts durability increasing in industry. Method of multilayer composite coating from powder materials HVOF on metal article includes application of coating bottom layer with thickness of 20-100 mqm from mechanically activated powder Ni, central layer with thickness of 50-500 mqm from mechanically activated powder with shape memory effect based on TiNi and upper layer with thickness of 50-500 mqm from mechanically activated mixture of powders of B4C, WC, (Cr3C2 or CSi), Co, Ni, C, with their ratio wt%: B4C 35-80, WC 7-40, (Cr3C2 or CSi) 7-30, Co 1-5, Ni 4-7, C 1-3. It is followed by annealing at temperature of 600-800 °C for 0.5-1 hours. After application of central layer from alloy with shape memory effect based on TiNi performing its surface plastic deformation during heating at temperature range of Martensitic transformation by value to 4-10 % of layer thickness. Mechanical activation of powders and HVOF are performed in shielding atmosphere.EFFECT: enabling higher strength characteristics and wear resistance of composite coatings using materials with shape memory effect.4 cl, 1 tbl, 1 ex

Substrate web coating by atomic layers deposition // 2605408
FIELD: materials.SUBSTANCE: invention relates to atomic layer deposition reactors, in which material is applied on surfaces with successive use of self-confined surface reactions. Method for of thin-film coating application on web surface by atomic layer deposition (ALD) includes supply of coated web into atomic layer deposition reactor reaction space, formation in reaction space for coated web of trajectory with repeating configuration and provision of coated web availability in reaction space for supply of precursors by separated in time pulses for applying on said web of material by means of successive self-confined surface reactions. Precursors pulses are supplied from reaction space side in precursors gases horizontal flow. ALD thin-film coating application device on web surface contains input gateway, configured with possibility to introduce moving covered web into material application reactor reaction space, trajectory setting elements, configured with possibility to generate in reaction space trajectory with repeating configuration for coated web, and precursors vapors supply unit, configured to ensure availability of coated web in reaction space for supply of precursors by separated in time pulses for said material applying on said web. Precursors vapors supply unit contains at least one flow distributor, made with possibility of enabling precursors gases horizontal flow. Flow distributor is located on reaction space side. ALD production line for thin-film coating application on web surface as one of modules comprises said device with possibility of coating application using said method.EFFECT: enabling possibility of ALD reactor adjustment to required production line speed for coated web processing.14 cl, 6 dwg
ethod for chemical-thermal treatment of parts made from nickel-based alloy // 2605395
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, particularly to methods for chemical-thermal treatment of parts made from nickel-based alloy, and can be used for production of parts units of gas turbine hot section of aircraft engines, stationary gas-turbine plants and other items operating at high temperatures. Method for chemical heat treatment of parts made from nickel-based alloy comprises placing part in working chamber, activation of surface of part before chemical-thermal treatment, feeding into chamber a working saturating medium, heating part to temperature of chemical-thermal treatment and holding at said temperatures to form required thickness of diffusion layer. Activation of surface of part before chemical-thermal treatment is carried out by means of ion-implantation treatment of surface of part at ion energy from 35 to 50 keV, radiation dose of 1.2·1017 cm-2 to 1.6·1017 cm-2, radiation dose accumulation rate of 0.6·1015 s-1 to 0.9·1015 s-1, and implanted ions used are ions of C, N, Cr, Y, Yb or their combination. In particular embodiments of invention, chemical-thermal treatment of parts is performed by ion-plasma nitriding, or ion-plasma cementation, or ion-plasma nitro-carbonisation.EFFECT: higher efficiency and quality of chemical heat treatment, higher wear resistance of parts after chemical-thermal treatment.3 cl, 1 ex
ethod for chemical heat treatment of parts made from cobalt-based alloy // 2605394
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, in particular, to methods for chemical heat treatment of parts made from cobalt-based alloy, and can be used for production of parts and assemblies of gas turbine hot section of aircraft engines, stationary gas-turbine plants and other articles, operating at high temperatures. Method for chemical heat treatment of parts made from cobalt-based alloy comprises placing a part in a working chamber, activation of surface of part before chemical heat treatment, feed a working saturating medium into chamber, heating to temperature of chemical heat treatment and holding at said temperatures to form required thickness of diffusion layer. Activation of surface of part before chemical heat treatment is carried out by means of ion-implantation treatment of surface of part at ion power from 35 to 50 keV, radiation dose of 1.2·1017 cm-2 to 1.6·1017 cm-2, radiation dose accumulation speed of 0.6·1015 s-1 to 0.9·1015 s-1 and when using as implanted ions, ions of following elements: C, N, Cr, Y, Yb or their combination. In particular cases, chemical heat treatment of part is performed by ion-plasma nitriding or ion-plasma cementation or ion-plasma carbonitriding.EFFECT: higher efficiency and quality of chemical heat treatment, higher wear resistance of parts after chemical-thermal treatment.3 cl, 1 ex

Black-plated steel sheet // 2605050
FIELD: technological processes.SUBSTANCE: invention relates to application of coating on surface of a steel sheet, particularly black coating material. Disclosed is a black-plated steel sheet comprising a hot-dip Al and Mg-containing zinc-plated layer which comprising 1.0 to 22.0 wt% of Al and 1.3 to 10.0 wt% of Mg, with a black oxide of Zn distributed in plating layer, said hot-dip Al and Mg-containing zinc-plated layer having a surface lightness represented by L* value of 60 or less.EFFECT: proposed steel plate retains its black appearance after treatment, can be stamped and is characterised by corrosion resistance.11 cl, 11 dwg, 13 tbl

Piercing mandrel and method of its making // 2605044
FIELD: machine building.SUBSTANCE: invention relates to mandrel, used in piercing mill, piercing and rolling workpiece. Piercing mandrel consists of housing and coating based on iron and iron oxide sprayed on housing surface, wherein sprayed coating contains the following, wt%: C 0.015-0.6, Si 0.05-0.5, Mn 0.1-1.0, Cu 0-0.3, iron, iron oxide and impurities - the rest, wherein iron oxide content in coating ranges from 55-80 vol%.EFFECT: higher efficiency of hollow tubular billets production by obtaining mandrels with high-quality coating.6 cl, 2 tbl, 3 dwg, 1 ex
ethod for chemical-thermal treatment of parts made from titanium // 2605029
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, particularly to methods for chemical-thermal treatment of parts made from titanium, and can be used in mechanical engineering for surface strengthening of parts of machines, including parts operating in friction pairs. Method for chemical heat treatment of parts made from titanium involves placing a part in a working chamber, activation of surface of part before chemical-thermal treatment, feeding into chamber a working saturating medium, heating part to temperature of chemical-thermal treatment and holding at said temperatures to form required thickness of diffusion layer. Activation of surface of part before chemical-thermal treatment is carried out by means of ion-implantation treatment of surface of part at ion energy from 30 to 40 keV, dose from 1.4·1017 cm-2 to 1.8·1017 cm-2, at a dose accumulation rate of 0.7·1015 s-1 up to 1·1015 s-1 and implanted ions used are ions of C, N or their combination. In particular embodiments of invention, chemical-thermal treatment of parts is performed by ion-plasma nitriding, or ion-plasma cementation, or ion-plasma nitro-carbonisation.EFFECT: higher efficiency and quality of chemical heat treatment, higher wear resistance of parts after chemical-thermal treatment.3 cl

ethod of high-temperature multilayer composite on metal surface producing // 2605018
FIELD: metallurgy.SUBSTANCE: invention relates to metal science, chemical-thermal treatment of metal articles, to production of structural purpose nano-structured materials, to friction and wear problem, and can be used for machines parts durability increasing in any industry. Method of producing high-temperature multilayer composite on metal part surface using HVOF involves surface treatment with HVOF in shielding atmosphere of preliminarily mechanically activated NiAl powder with shape memory effect to produce layer with thickness of 120-500 mqm with further plastic deformation at heating below temperature of martensitic transformation beginning, production of high-temperature layer by HVOF in shielding atmosphere of preliminarily mechanically activated mixture of Si, Y, BN, C, Co, Ni3Al powders, with their ratio wt%: Si 4-13, Y 2-3, BN 12-20, C 2-8, Co 3-10, Ni3Al is rest, with thickness of 150-500 mqm. It is followed by heating at temperature of 30-35 °C above solidus followed by ageing in two stages. At first stage performing heating to temperature of 1,000-1,100 °C with holding for 1-1.5 hours, at second stage is heating to temperature of 900-950 °C with holding for 2.5-3 hours. As shielding atmosphere in HVOF argon is used.EFFECT: enabling higher heat-resistant characteristics, process time and costs reducing.1 cl, 1 tbl, 1 ex

Two-phase steel sheet and method of making thereof // 2605014
FIELD: metallurgy.SUBSTANCE: sheet is produced from two-phase steel containing wt%. %, C 0.01-0.1, Mn 0.2-3, Al 0.04-1.5, Ti 0.015-0.2, P 0.01 or less, S 0.005 or less, N 0.01 or less, if the following condition is fulfilled [Ti] - 48/14 × [N] - 48/32 × [S] ≥ 0 %, and it has been established that Ex.C (%) = [C] - 12/48 × {[Ti]+48/93 × [Nb] - 48/14 × [N] - 48/32 × [S]}, following condition is satisfied 0.001 ≤ Ex.C (%)/fsd (%) ≤ 0.01, Fe and the rest - impurities, wherein at the depth of 1/4 of the plate thickness the microstructure is two-phase, with its main phase consisting of polygonal ferrite dispersion strengthened with carbide Ti, and the second phase including multiply dispersed products of low-temperature conversion at the area ratio of 1-10 % (fsd (%)), and the average diameter of crystals of products of low-temperature conversion is 3-15 mcm, and the average value of maximum distance between the products of low-temperature conversion is 10-20 mcm.EFFECT: higher ductility and strength with provision of uniform relative elongation and suitability for hole flanging.12 cl, 5 tbl, 1 dwg

ethod of activating dielectric materials // 2604556
FIELD: chemistry.SUBSTANCE: invention relates to activation of dielectric surface before chemical and/or electrochemical metal coating and can be used to make high-density multilayer printed circuit boards with direct metal coating of through and blind holes with finishing with coatings for lead-free technology at high temperature soldering. Method involves degreasing and pickling a workpiece, its treatment for 5-6 minutes in an activation solution heated to 40-45 °C, containing components in following ratio, wt%: palladium dichloride - 0.015-0.03, tin dichloride dihydrate - 3.5-4.5, sodium chloride - 0.4-1, aluminium trichloride - 0.01-0.03, vanillin - 0.2-0.4, water - balance.EFFECT: invention provides an optimum level of adhesion of surface of dielectric materials with metal coating, reduced duration of technological cycle of direct metal coating and higher reliability at reduced cost of obtained product.1 cl, 1 tbl, 1 ex

ethod for producing solid deicing material based on table salt and calcined calcium chloride (versions) // 2604219
FIELD: chemistry.SUBSTANCE: invention can be used for obtaining solid deicing material with low corrosion activity. A method for producing a solid deicing material comprises a mechanical uniform mixing between a crystal of common salt stone Class I crystalline calcium chloride calcined first technical grade crystalline metal corrosion inhibitor elements, crystalline surfactant crystalline acidity regulator. During production of deicing material each element of corrosion inhibitor is saturated with heavy isotopes of carbon 13C so that ratio of carbon isotopes 13C to total amount of carbon in element makes from 0.005 to 0.75, and each element of corrosion inhibitor is saturated with heavy isotopes of nitrogen 15N so that ratio of nitrogen isotopes 15N to total amount of nitrogen in element makes from 0.0001 to 0.1375.EFFECT: higher efficiency of corrosion inhibitor in obtained solid deicing material without deterioration of its anti-icing properties.5 cl, 4 dwg, 69 tbl

ethod for producing solid deicing material based on table salt and calcined calcium chloride (versions) // 2604214
FIELD: chemistry.SUBSTANCE: method for producing a solid deicing material comprises mechanical uniform mixing of a crystalline rock common salt, calcium chloride crystal, crystalline metal corrosion inhibitor elements, crystalline surfactant and crystalline acidity regulator. In the preparation of deicing material each corrosion inhibitor element is saturated with heavier isotopes of carbon 13C so that the ratio of carbon isotopes 13C to total number of carbon element is size from 0.005 to 0.75. Also, each element of the corrosion inhibitor is saturated with heavy isotopes of nitrogen 15N so that the ratio of nitrogen isotopes 15N to the total amount of nitrogen in the element amounts to 0.0001 to 0.1375.EFFECT: provides increased efficiency of corrosion inhibitor without deteriorating properties of resulting solid deicing material.5 cl, 4 dwg, 69 tbl

ethod for producing solid deicing material based on table salt and calcined calcium chloride (versions) // 2604213
FIELD: chemistry.SUBSTANCE: method for producing a solid deicing material comprises mechanical uniform mixing of a crystalline rock common salt, calcium chloride crystal, crystalline metal corrosion inhibitor elements, crystalline surfactant and crystalline acidity regulator. In the preparation of deicing material each corrosion inhibitor element is saturated with heavier isotopes of carbon 13C so that the ratio of carbon isotopes 13C to total number of carbon element is size from 0.005 to 0.75. Also, each element of the corrosion inhibitor is saturated with heavy isotopes of nitrogen 15N so that the ratio of nitrogen isotopes 15N to the total amount of nitrogen in the element amounts to 0.0001 to 0.1375.EFFECT: provides increased efficiency of corrosion inhibitor without deteriorating properties of resulting solid deicing material.5 cl, 4 dwg, 69 tbl

Volatile corrosion inhibitor // 2604164
FIELD: metallurgy.SUBSTANCE: invention relates to protection of metals from corrosion and can be used for protection of ferrous and nonferrous metals and articles made therefrom from atmospheric corrosion during transportation and storage. Volatile corrosion inhibitor (VCI) contains, wt%: triethanolamine 0.5-1.0, dimethylethanolamine 65.0-67.0, diethanolamine 0.5-1.0 and benzoic acid makes up balance up to 100.EFFECT: technical result consists in simplification of composition of VIC with provision of high anti-corrosion protection of ferrous and non-ferrous metals and articles made therefrom.1 cl, 3 tbl, 1 ex

ethod of cleaning surfaces of copper and its alloys from corrosion and oxidation by copper compounds (ii) // 2604162
FIELD: technological processes.SUBSTANCE: invention relates to cleaning elements of process and household equipment from copper and its alloys from corrosion products and products of oxidation of copper compounds (II) and can be used in various branches of practical activity, in scientific research and in analytical control. Method involves treatment of copper and its alloys surface with aqueous acid solution in the presence of oxidant, in form of air oxygen, and as acid is water solution of 0.033 n., 0.053 n., 0.06 n., 0.07 n, n 0.237 or 0.47 n. of nitric acid. Cleaned surface is fully submerged into said aqueous solution of acid, in which intensive mixing is conducted, stirring and air barbotage or air barbotage, wherein acid flow rate and accumulation of copper (II) compounds are controlled, and after treatment waste reaction mixture is carefully drained, metal or alloy are washed once or twice with distilled water and dried.EFFECT: method enables effective and fast cleaning of copper and its alloys surface from corrosion and oxidation products, which include copper oxides (I) and (II) and copper (II) hydroxide, wherein providing removal of deposits only located on surface of copper and its alloys without affecting the metal and without changing relief and structure of its surface.1 cl, 1 tbl, 13 ex
Hot metal sheet forming or stamping tool with cr-si-n coatings // 2604158
FIELD: metallurgy.SUBSTANCE: invention relates to tool for hot forming steel sheet with AlSi coating, having a CrxSiyNz coating, where x: 40-69 wt%, y: 1-20 wt% and z: 30-40 at%, as well as to use of said tool as a tool for hot forming a steel sheet with AlSi coating.EFFECT: tool is provided with coating, having sufficient abrasive wear resistance, sufficient adhesion wear resistance and sufficient thermal stability, wherein coating improves protection against friction corrosion, observed on AlSi coated steel sheets after hot forming of metal sheets, compared to coatings used in present time.6 cl

ethod for coating vehicle body using primer layer (versions) // 2604157
FIELD: metal processing.SUBSTANCE: invention relates to coating of articles, particularly to coating of vehicle body. By this method, upon vehicle body primer layer is applied matched by colour with colour pigment of body, then above primer layer matched to body colour, first layer of basic coating body is applied before drying of the former, wherein before drying of first layer of basic coating, first layer of transparent coating is applied and thermal treatment of vehicle body is performed for drying primer layer matched to body colour, first layer of basic coating, and first layer of transparent coating so that after thermal treatment said colour pigment can reflect light passing through first layer of basic coating and first layer of transparent coating. Also due to reduced possibility of contamination of coating layers applied without intermediate heat treatment, higher quality of coating, reduced duration and costs are provided.EFFECT: invention enables to obtain vehicle body with coating of required colour, provided by predetermined combination of primer with colour pigment colour which contributes to resultant colour of body, basic coating, and transparent coating.11 cl, 2 dwg

ethod of producing corrosion inhibitor for ferrous metals for protection of oil field equipment // 2604151
FIELD: metal processing.SUBSTANCE: invention relates to metals protection against corrosion and can be used in oil industry for protection of process equipment and pipelines against corrosion destructions in water-oil media. Method involves diethylenetriamine reacting with tallol fatty acids, condensation of obtained product with paraformaldehyde and isononylpfenol, then condensation product is treated with maleic anhydride in amount of 0.1-1 mole per 1 mole of used diethylenetriamine, and obtained product is treated with zinc oxide in amount of 0.05-0.5 mole per 1 mole of maleic anhydride to obtain product of general formula,where R is alkyl or alkylene radical with number of atoms C8-C20.EFFECT: technical result is production of inhibitor with high degree of protection of ferrous metals against corrosion (not less than 90 %) at minimum inhibitor dosages to 10 ppm.1 cl, 1 ex

ethod of multifunctional coatings plasma sputtering // 2604086
FIELD: instrument making.SUBSTANCE: invention can be used for multifunctional coatings plasma sputtering in instrument making and machine building, as well as in making of intraosseous implants with metal and composite coatings. Working gas is supplied into arc, burning between cathode and copper anode, with plasma jet formation. Sprayed material is supplied into plasma jet by carrier gas on preprocessed surface. Plasma spraying is carried out in vacuum at swinging motion of plasmatron perpendicular to its motion direction and coated surface is additionally exposed to pulsed gas discharges with current of 90±2 A with current pulses duration of 0.2±0.02 s and with pulses repetition frequency of 50±2 Hz. Plasmatron swinging is performed with rolling angle of 15-25° with frequency of 20-40 motions per minute and translation length of 10-15 mm at movement speed of 20-30 motions per minute.EFFECT: method ensures production of coating formed from particles with optimum adhesion properties and uniformity of coating.1 cl, 1 dwg, 4 tbl

ethod of formation of nanostructured biologically inert coating on titanium implants // 2604085
FIELD: medicine.SUBSTANCE: invention relates to medical equipment, namely technology of making bioinert nanostructured oxide coating on intraosseous parts of titanium implants. Method includes air-abrasive treatment, etching in solution of acids and gas-thermal oxidation. Air-abrasive treatment is carried out with alumina powder with particle size of 100-200 mcm at pressure of air medium 0.2-0.3 MPa. Etching of implant is performed in water solution of HF (5-8 wt%) + HNO3 (15-19 wt%) for 0.1-0.2 minutes. Gas-thermal oxidation is performed by induction of heating in air atmosphere to temperature of 800-900 °C at current frequency on inductor of 90±10 kHz and specific consumption of electric power 0.2-0.4 W/kg. Then implant is held for 0.5-2 minutes and cooled in air.EFFECT: formation of oxide coating on titanium implant surface with thickness of 3-10 mcm is provided, which consists of oxide crystals with size of up to 70±10 nm, with help of high-efficiency and resource-saving method.3 cl, 3 dwg, 2 ex

Chemical removal of surface defects from textured electrical steel // 2604077
FIELD: metalworking.SUBSTANCE: invention relates to treatment of electrical steel coated with factory glass and having defects in the form of iron cusps. Method involves processing at least part of the surface of electrical steel coated with factory glass with an acid solution for a time sufficient to decrease average height of iron defects on the surface down to average height within the range from 0 % to 150 % of thickness of the factory glass coating without removing the factory glass coating. Method applies an acid solution containing an organic acid, and after the said treatment the electrical steel coated with factory glass is washed with water and dried.EFFECT: invention allows reducing the height of defects present onto a factory glass coated electrical steel in the form of iron cusps.22 cl, 61 dwg, 8 ex

ethod for producing solid deicing material based on table salt and calcined calcium chloride (versions) // 2604033
FIELD: chemistry.SUBSTANCE: method for producing a solid deicing material comprises mechanical uniform mixing of a crystalline rock common salt, calcium chloride crystal, crystalline metal corrosion inhibitor elements, crystalline surfactant and crystalline acidity regulator. In the preparation of deicing material each corrosion inhibitor element is saturated with heavier isotopes of carbon 13C so that the ratio of carbon isotopes 13C to total number of carbon element is size from 0.005 to 0.75. Also, each element of the corrosion inhibitor is saturated with heavy isotopes of nitrogen 15N so that the ratio of nitrogen isotopes 15N to the total amount of nitrogen in the element amounts to 0.0001 to 0.1375.EFFECT: provides increased efficiency of corrosion inhibitor without deteriorating properties of resulting solid deicing material.5 cl, 4 dwg, 69 tbl
 
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