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(312744)
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 for producing thin nanodiamond film on glass substrate // 2614330
FIELD: chemistry.SUBSTANCE: thin nanodiamond film is obtained on a glass substrate by spraying the target material by a pulsed laser in a vacuum. The target is represented by detonation nanodiamond tablets, and the pulsed laser radiation source is represented by the laser with a wavelength of 1064 nm of a series of 13 to 20 pulses, with a pulse energy from 3.8 to 5.8 J and a duration from 1 to 1.5 ms. The process is accompanied by dispersing the detonation nanodiamond conglomerates up to individual nanocrystals and purification from impurities in the process of high-energy laser pulse impact. The resulting film is a two-dimensional polycrystalline nanodiamond aggregate.EFFECT: obtaining thin-film hardening coatings and creating nanostructured materials.9 dwg, 2 tbl, 5 ex
Heat resistant metal-ceramic coating and method of its application // 2614320
FIELD: machine building.SUBSTANCE: invention relates to machine building and can be used for production of parts with increased heat resistance. In heat-resistant metal-ceramic coating, consisting of metals high-melting oxides alternating layers separated with plastic metal compensation layers, high-melting oxides layers are additionally contain not more than 40 % of plastic metal, and compensating layers are additionally contain not more than 20 % of high-melting oxides. Each plastic metal compensating layer is made with thickness of not more than 100 nm and in 1.5–20 times less than ceramics layer thickness. As high-melting oxides layers hafnium oxide or zirconium oxide can be used, and compensating layers contain up to 50 % of rare-earth metals.EFFECT: alternating oxide and compensating layers are sprayed with smooth change of composition.4 cl
ethod of cyclic gas nitration of structural alloy steel parts // 2614292
FIELD: metallurgy.SUBSTANCE: method of cyclic gas nitration of structural alloy steel parts includes part heating in the furnace up to the temperature of 540-650 °C, isothermal holding at the heating temperature, during which the saturating atmosphere replacement is performed cyclically in two stages in each cycle, and subsequent cooling together with the furnace in the ammonia-base atmosphere. The nanoscale copper film is prelimenary applied to the part surface, and the mentioned heating is conducted in the ammonia and carbon dioxide atmosphere at a volume ratio of these components 1:1. The first cycle stage of isothermal holding is carried out in saturating ammonia atmosphere in a mixture with water vapour at a ratio of volumes of mentioned components 1:1 and obtaining the copper oxide film on the part surface. The second step of the mentioned cycle is carried out in saturating ammonia atmosphere in the mixture with carbon dioxide at the ratio of mentioned gas volumes 1:1, and with the copper oxide recovery up to forming the pure copper on the part surface. In the invention particular case, the thickness of the applied nanoscale copper film is within the range of 150-200 nm.EFFECT: increase of metal ceramics solid area thickness up to a specified value in the diffusion nitrided layer, obtained at the parts surface from structural alloyed steel without the nitriding process duration increase and without reducing its hardness.2 cl, 1 tbl, 5 ex
ethod of producing nanostructured coating of titanium-nickel-hafnium with high-temperature shape memory effect on steel // 2614226
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, namely to deformation-thermal treatment of titanium-nickel-hafnium coatings with shape memory effect, and can be used in metallurgy, machine building and medicine. Method of producing nanostructured coating of titanium-nickel-hafnium with high-temperature shape memory effect on steel involving application of powder TiNiHf by high-rate flame spraying, performance of plastic deformation of coating in four steps, at first stage in temperature range 500–550 °C with degree of plastic deformation ε=6–9 %, at second stage in temperature range 570–600 °C with degree of plastic deformation ε=9–12 %, at third stage in temperature range 600–700 °C with degree of plastic deformation ε=12-15%, at fourth stage in temperature range 850–890 °C with degree of plastic deformation ε=15–40 %, wherein after each stage of plastic deformation annealing is carried out at temperature of 500–600 °C for 2–3 hours, and further tempering at temperature of 900–950 °C with subsequent cooling. Plastic deformation of coating is implemented by rolling with three-roller device in radial direction in protective argon medium and when passing electric current in zone of contact of three-roller device with coating Ti-Ni-Hf. Coating Ti-Ni-Hf with shape memory effect contains 19–23 % of hafnium.EFFECT: production of multifunctional nanostructured coating with shape memory effect is provided.3 cl, 1 tbl, 1 ex

ethod of producing ion-plasma vacuum-arc cerametallic ti-ni coating for carbide cutting tool of expanded use // 2613837
FIELD: metallurgy.SUBSTANCE: precleaning of tool surface and subsequent vacuum-arc coating deposition are carried out in the reaction gas-nitrogen during evaporation of cathodes containing titanium and nickel. Coating deposition is carried out during evaporation of cathodes made of VT1 and Ti-Ni (50 at titanium alloys.% Ni) in the arc current which evaporates cathode from titanium, 120 A and in the arc current which evaporates the cathode from Ti-Ni alloy, 90-110 A, and 100-120 V negative bias voltage fed to the carbide cutting tool. These deposition parameters and used cathode materials allow to implement 3.5-8% (at.) nickel content in the coatings.EFFECT: increased durability of the carbide cutting tool; expansion of its use both at continuous and interrupted cutting operations; increased turning speed of the processed materials.9 dwg, 7 ex, 2 tbl

ethod for surface coating // 2613827
FIELD: chemistry.SUBSTANCE: according to one embodiment of the method, said precursor solution doped by fluorosilane is applied to the surface of the part, wherein said solution comprises more than 0.6 mol % of said precursor in an alcohol-containing solvent. In accordance with the second embodiment, said precursor solution doped by trimethoxysilane (heptadekafluorine-1,1,2,2-tetrahydrodecil) is applied to the surface of the part, wherein said solution comprises more than 0.6 mol % of said precursor in an alcohol-containing solvent, and heat treatment of the coated surface at the temperature of 200C° to 300C° for 30 min.EFFECT: efficient low-cost means providing wetting resistance for the surfaces.10 cl, 9 dwg, 1 ex

Piston ring with chromium and solid particles layer to protect from wear and corrsion resistant side face // 2613819
FIELD: machine engineering.SUBSTANCE: piston ring contains a major part of the chromium steel with more than 10% by the chromium weight, having the inner peripheral surface, the first side surface, the second side surface and the outer peripheral surface. At the first side surface it contains the nitrided diffusion layer with thickness of 5-300 micron, the nitrided bond layer with thickness of 0.5-15 microns located directly above it, and the oxide layer with thickness of 0.05-3 microns located directly above it. On the second side surface it contains a nitrided diffusion layer. On the outer peripheral surface it contains the nitrided diffusion layer and the chromium and solid particles layer located above it, wherein the solid particles volume content is 0.1-30% relatively to the total volume of the indicated layer. The method of the indicated piston ring manufacture, wherein the metal major part of the piston ring, having the inner peripheral surface, the first side surface, the second side surface and the outer peripheral surface, is subjected to a combined process of nitration-oxidation in the atmosphere, containing at least one nitrogen compound, with heating at least up to 300°C. Then the air is supplied and the piston ring is cooled in the air presence. As a result, the nitrided diffusion layer, located above it the nitrided bond layer, and located above it the oxide layer is obtained at least at the first side surface, the second side surface and the outer peripheral surface. The piston ring is placed into the aqueous electrolyte, containing chromium in the ionic form and the solid particles, and the layer of chromium and mentioned solid particles is electrochemically deposited at least to the outer peripheral surface.EFFECT: obtaining the piston ring with high wear-resistant outer peripheral surface and the side surface, which has both high hardness and high corrosion resistance.15 cl 3 dwg

Anode grounding (versions) // 2613803
FIELD: electricity.SUBSTANCE: anode grounding comprises the current lead wire, the electrode of a low-soluble polymeric carbonaceous material, and the contact assembly; the electrode is made cylindrical, from the mixture of polyurethane (10-30 wt) and a low-soluble carbonaceous material (70-90 wt %, compacted at a pressure of 10-50 MPa and a temperature of 18-25°C.). The contact assembly comprises the stud pressed along the electrode axis; according to the first version of the anode grounding, the current lead wire is fixed on the non-pressed part of the stud by means of fixing nuts, the insulating shell is arranged in the electrode butt above the contact assembly. According to the second version of the anode grounding, the current leads wires are fixed on the non-pressed parts of the stud in both butts of the electrode.EFFECT: reduction of energy consumption for the cathodic protection, improving the conservation of the current lead wire contact with the electrode material, reducing the degradation rate of the anode grounding in the operation process.8 cl, 2 dwg
Internal combustion engine sleeve // 2613757
FIELD: engines and pumps.SUBSTANCE: invention can be used in internal combustion engines. The internal combustion engine sleeve inner part is treated so, as to be completely smooth, and DLC type coating is applied to it. The value of surface roughness of the sleeve before spraying, Ra, is less than 0.06 microns. The DLC coating is applied on the sleeve inside by means of vacuum deposition, including ion etching step and the next step related to spraying itself.EFFECT: invention provides minimization of the oil quantity on the cylinder wall and reduces the friction force losses for oil film shift.6 cl, 1 tbl

Decorative vehicle part // 2613496
FIELD: car industry.SUBSTANCE: invention relates to decorative part for vehicle. Car decorative part comprises substrate, galvanic coating on said substrate and colour-forming coating layer, applied by physical deposition from gas phase. Between substrate and colour-forming coating layer adhesive layer is arranged, and between adhesive layer and colour-forming coating layer combined layer is arranged. Adhesive layer is made of chromium, or zirconium, or from chromium and zirconium, and combined layer contains chromium and zirconium, and elements X, wherein X represents one or more elements from group, consisting of nitrogen, carbon and oxygen. Adhesive, combined and colour-forming coating layers represent PVD-layers.EFFECT: providing decorative part, having colour, as well as solid and corrosion-resistant surface provided by applied layers.7 cl, 2 dwg

ultilayer thin film for cutting tools and cutting tools, comprising such film // 2613258
FIELD: chemistry.SUBSTANCE: invention relates to a multilayer thin film for cutting tools in where the individual thin films, each consisting of four thin layers, are stacked more than once. Individual thin films, each consisting of a stack of successive thin layers A, B, C, and D, are stacked more than once. The modulus of elasticity ration between the thin layers satisfies the conditions of kA, kC> kB, kD or kB, kD>kC, kA and the ratio of the constant L lattice between the thin layers satisfies the conditions of LA>LB, Ld>LC or LC>LB, Ld>LA.EFFECT: multilayer thin film has improved physical properties compared to conventional films due to adjusted elasticity modulus period and period of the constant lattice between the four thin layers.7 cl, 7 dwg, 3 tbl, 2 ex

Cylindrical resonator device of plasma chemical deposition of glass material from vapor phase on inner surface of substrate in form of tube // 2613252
FIELD: chemistry.SUBSTANCE: invention relates to device for plasma chemical deposition from vapor phase. Cylindrical resonator of device of plasma chemical deposition from of glass material vapor phase on inner surface of substrate in form of tube comprises outer cylindrical wall, made with resonant cavity passing in peripheral direction around cylinder axis, side wall with parts enclosing resonance chamber in direction of cylinder axis and slot structure located in peripheral direction around axis of cylinder providing access of microwave energy from resonant chamber radially inside said tube. Slot structure comprises slotted sections mutually shifted towards cylinder.EFFECT: deposition of material with considerably smaller or even zero heterogeneity of thickness and/or refraction index is provided.17 cl, 8 dwg
Flux cored wire for coatings resistant to abrasive wear and high-temperature corrosion // 2613118
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, in particular, to flux cored wires for coating, and can be used for parts, operating in conditions of abrasive particles and high temperatures. Flux cored wire consists of a steel cladding and core made from a mixture containing, wt%: chrome 5.0–15.0, boron 1.0–5.0, aluminium 2.0–12.0, carbon 0.2–1.0, yttrium 0.5–1.0, iron – balance. Obtained coatings have high micro-hardness and heat resistance.EFFECT: higher wear resistance and corrosion resistance of parts, operating in conditions of abrasive particles and high temperatures.1 cl, 1 tbl, 1 ex

Composition welding wire // 2613006
FIELD: metallurgy.SUBSTANCE: composition welding wire for repair by fusible welding of the gas turbine engine parts made of heat-resisting alloys based on nickel, cobalt or iron, comprises a core and a surface layer applied and connected to it, containing boron and/or silicon. The total content of boron and/or silicon in the composition welding wire is calculated by formula where C∑ is the total content of boron and/or silicon in the welding wire; D' is the diameter of the welding wire; CSL is the content of boron and/or silicon in the surface layer; T is the thickness of the surface layer, wherein C∑ is 0.1-10 wt %.EFFECT: prevention of the cracking in the heat affected zone due to the fusible welding and argonarc welding of the dispersion-hardened heat-resisting alloys.17 cl, 13 dwg, 1 tbl, 6 ex
Thermal insulation coating ceramic layer material // 2613005
FIELD: heating.SUBSTANCE: coating consist of zirconium oxide, yttrium oxide and aluminium oxide with the following components ratio, wt %: Al2O3 - 1-8, Y2O3 - 7-9, ZrO2 - other.EFFECT: expansion of the ceramic thermal insulation coating application range, due to using in it the widely available material - aluminium, oxide of which is chemically more stable.4 cl, 1 tbl
ethod for producing monochrystalline rotor blades of gas turbines // 2612672
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy and can be used for the production of monocrystalline working blades for gas turbines with the improved characteristics of the resource and the operating temperature. In manufacturing the monocrystalline rotor blades of gas turbines, a monocrystalline blade billet of the specified crystallographic orientation is cast, the metal penetration and the remnants of ceramics are removed from the cast surface by means of sandblasting, with the following blade size control to determine the allowance amount to be removed by abrasion. After the allowance removal, the blade surface treated by an abrasive is etched in order to remove the defective surface layer with the distorted crystal structure. Then high-temperature annealing of the blade is carried out.EFFECT: invention allows to improve the quality of the blades due to the stabilisation of the monochrystalline structure of the working turbine blades during their production.2 cl, 2 dwg
ethod for producing structural element made of steel by means of thermoforming // 2612478
FIELD: machine building.SUBSTANCE: method of manufacturing a structural element made of steel, amenable to transformation during hot forming comprises heating the cut steel sheet metal plate to the austenitizing temperature, moulding secured after moulding is at least partially martensitic structure, while in rapid cooling of the sheet or plate after heating to the austenitizing temperature, to obtain a plate with conditioned at least partly martensitic, and then reheating is carried out to a temperature below ac1-temperature conversion and forming at this temperature.EFFECT: increase strength and corrosion resistance.17 cl

Heat radiating element and its fabrication method // 2612469
FIELD: heating.SUBSTANCE: method contains arrangement of the grid on the base, made from the first metallic material, and forming the heat radiating cell on the base surface, either by spraying the granular particles, obtained from the second metallic material, the oxide of which has a reflection factor 70% or more, different from the first metallic material, and the particles from the second metal material oxide, either by deposition of metal particles, made from the second metallic material, and their oxidation, at that the formation is carried out so, that the cell contact area with the base is 1 mm2 and less, after which the grid is removed. According to one more embodiment, the method includes forming of the heat radiating cell on the base surface by arc-ion deposition of metal particles, made from the second metallic material, with their distribution over the surface of the base material by applying the shift voltage, and subsequent oxidation of applied metal particles, at that the formation is carried out so, that the cell contact area with the base is 1 mm2 and less.EFFECT: increase of reliability and strength of the heat-radiating elements over a wide temperature range.3 cl, 3 ex, 3 tbl, 10 dwg
ethod of coating application for heat protection of parts made of niobium-base alloys // 2612334
FIELD: metallurgy.SUBSTANCE: invention refers to coatings for metal materials and can be applied for protection of parts made of niobium alloys against high-temperature gas corrosion at high temperatures. Condensed layer of MeCrAlY system alloy is formed on the surface of parts, where Me is iron, nickel, cobalt, and diffusion saturation of the condensed layer surface with silicon is performed. Before obtainment of condensed layer out of the said alloy, the part surface undergoes diffusion saturation with silicon up to specific weight gain of 40-80 g/m2, so that specific weight gain ratio after diffusion saturation of the condensed alloy layer with silicon and after diffusion saturation of the part surface with silicon comprises 0.1-1.5 g/g. In particular cases of invention application, diffusion saturation of the part surface and condensed layer of MeCrAlY system alloy with silicon, where Me is iron, nickel, cobalt, is followed by vacuum heat treatment at 1100-1300 °C for 1-5 hours.EFFECT: improved high-temperature stability of protective silicide coatings of niobium alloy products.2 cl, 1 tbl, 2 dwg

ethod of introduction of electron beam into medium with increased pressure // 2612267
FIELD: physics.SUBSTANCE: invention relates to method of inputting electron beam into medium with increased pressure, whereat gas is fed through system of feeding in nozzle unit consisting of two circular nozzles (internal and external, along axis of internal annular nozzle there is hole for passage of electron beam), at expansion of which into medium with increased pressure in paraxial area of flow “zone of tranquillity” is formed, parameters of which depend only on parameters determining operation of internal annular nozzle (in particular, its geometry and gas flow rate), being part of transport channel for introduction of electron beam from electron gun into medium with increased pressure. Wherein electron beam before entering medium with increased pressure passes through return flow pumping section, and gas flow rate of internal and external annular nozzles G1 and G2 is maintained so that ratio of G2/G1 is in range of 7–8.EFFECT: invention allows simplifying system of lock chambers and reducing total number of chambers of system.1 cl, 6 dwg, 3 ex

ethod of producing hybrid material based on multi-walled carbon nanotubes with titanium carbide coating // 2612247
FIELD: nanotechnology.SUBSTANCE: hybrid nanocomposite materials are composed of multi-walled carbon nanotubes and are sedimented on them using the method of chemical vapour deposition of an organometallic compound of titanium coatings of titanium carbide, and can be used in the electron emitters of flat-panel displays and in other automotive vacuum emission devices. A process of getting a nanocomposite hybrid material based on multi-walled carbon nanotubes with a titanium carbide coating, comprises placing a multi-walled carbon nanotubes in the reactor, creating a pre-vacuum reactor, heating multi-wall carbon nanotubes to a predetermined temperature, the supply of the organometallic titanium compound to the surface of the multiwalled carbon nanotubes, the pyrolysis of the organometallic titanium compound on the surface of multi-walled carbon nanotubes with titanium carbide coating deposition and removal of volatile organometallic compounds of titanium products of pyrolysis. As a starting compound, an organometallic titanium bis (cyclopentadienyl) titanium dichloride is used, and its pyrolysis is carried on the surface of multi-walled carbon nanotubes at a temperature below 850°C and not higher than 900°C.EFFECT: technology simplification of titanium carbide coatings on the surface of multi-walled carbon nanotubes by using a titanium-containing organometallic precursor.5 dwg, 6 ex
ethods for protection against corrosion of replaceable tool made of dissimilar metals // 2612118
FIELD: chemistry.SUBSTANCE: method comprises immersion of the tool or its part, made of a less corrosion-resistant metal, into a container with electrically insulating fluid with density at least 1.5-2 times greater than the sea water density and not miscible with the sea water, during tool transportation and storage in sea water.EFFECT: invention can be used for repeated tool protection in sea water while maintaining its operating characteristics, and can effectively protect the tool from contact and electrochemical corrosion in sea water.2 cl

ethod for ion-plasma application of wear and corrosion resistant coating on items of aluminum alloys // 2612113
FIELD: metallurgy.SUBSTANCE: invention relates to the method for ion-plasma application of wear and corrosion resistant coating on items of aluminum alloys. The surface is cleaned with argon ions in the glow discharge plasma at the discharge voltage up to 700 V, the power of 1.5 kW and the operating pressure of 1 Pa for 10 minutes. The intermediate layer is sequentially applied in the form of a multilayer coating of 3-5 layers of titanium oxide of nanoscale thickness in the vacuum chamber by magnetron sputtering of the titanium target cathode at the discharge voltage of 300 V and the power of 1.5 kW, in the atmosphere of the argon and oxygen mixture at the operating pressure of 0.5 Pa. Each layer of titanium oxide is applied during 1.0 min. Between applying the layers, the item is kept in the air atmosphere during 1.0 minutes. The base titanium nitride layer of the thickness of 1-5 microns is applied in the vacuum chamber by magnetron sputtering of titanium target cathode at the discharge voltage of 300 V and the power of 1.5 kW in the atmosphere of the argon and nitrogen mixture at the operating pressure of 0.5 Pa during 60-120 min. The item temperature is 90-200°C. After applying the coating, the item is cooled in the argon medium to reach room temperature.EFFECT: invention allows to process the items of aluminum alloys at low temperatures of up to 200°C, and enhances the hardness, wear resistance and corrosion resistance of the items.3 dwg, 1 tbl, 1 ex
ethod for application and laser treatment of thermal-protective coating (versions) // 2611738
FIELD: technological processes.SUBSTANCE: invention relates to gas thermal spraying coating, in particular, to methods of sputtering of heat-resistant and heat-protective coatings. Main metal thermal resistant underlayer is applied. Upper ceramic heat-shielding layer is applied, followed by laser treatment. Laser treatment is performed using a laser beam with U-like energy distribution across cross-section. Output power value and speed of scanning of laser beam is set in range of 100–6,000 W and 0.01–1 m/s. In another version, main metal thermal resistant underlayer is applied. Upper ceramic heat-shielding layer is applied, followed by laser treatment. Laser treatment is performed using a laser beam with U-like energy distribution across cross-section. Output power values and laser beam scanning rate are set in range of 100–6,000 W and 0.01–1 m/s. Laser treatment is then carried out with parameters of laser beam, corresponding to previous laser treatment to obtain a coating with given properties.EFFECT: high resistance of heat shielding coating to high temperature effects (thermal resistance and heat resistance), erosion and corrosion by fusion of upper ceramic layer.10 cl, 1 tbl, 1 ex
ethod of oxide coatings forming on products made from titanium alloys // 2611617
FIELD: chemistry.SUBSTANCE: invention refers to the technology of oxide coatings formation on titanium products for technical and medical purposes, such as elements of friction pairs and hardware products. A titanium product is subject to induction heating in air at temperatures up 700-800 C, at inductor current frequency of 9010 kHz and specific electric power consumption of 0.2-0.4 Wt. The product is then kept at this temperature for 2-3 minutes and air-cooled.EFFECT: formation of oxide coatings that enhance hardness and scratch resistance, and reduces the sliding friction coefficient of titanium products surface.2 dwg, 1 tbl, 2 ex
Zirconium pretreatment compositions containing molybdenum, associated methods for treating metal substrates, and related coated metal substrates // 2611610
FIELD: metal processing.SUBSTANCE: invention relates to treatment of metal substrates, such as cold-rolled steel, electrogalvanised steel or aluminium alloys. Pretreatment composition for treatment of metal substrate before application of coating comprises a Group IIIB and/or IVB Group metal, free fluoride, molybdenum and lithium, in which on molybdenum is in amount of 2 to 500 parts per million in terms of total weight of ingredients of pretreatment composition, wherein pretreatment composition in contact with substrate reacts with surface of substrate, chemically changes surface of substrate and binds to it with formation of a protective layer. Method of applying coating on a metal substrate includes pretreatment of metal substrate with pretreatment composition and electrophoretic deposition of a coating composition on metal substrate, wherein said coating composition contains yttrium.EFFECT: invention ensures production of corrosion-resistant coatings without use of phosphate- and/or chromate-containing compositions.42 cl, 4 tbl, 3 ex
ethod for high-temperature nitriding of items made from titanium alloys // 2611607
FIELD: technological processes.SUBSTANCE: invention relates to plasma chemical-thermal treatment of surface of parts and can be used in aircraft engine construction. Method of nitriding items made of titanium alloy in glow discharge comprises vacuum heating of items made from titanium alloy in glow discharge in high density nitrogen plasma. High density nitrogen plasma is formed in circular area of rotation of electrons caught by magnetic field, and nitration of said items is performed in a mixture of gases N2 50÷60 % + Ar 50÷40 % at pressure of 40 Pa and heating of items to temperature of 700÷730 °C with holding for 2–3 hours. Then method comprises performing reducing annealing at 800÷830 °C in argon with holding for 30 minutes, after which item is cooled in vacuum.EFFECT: intensified process of nitriding, formation of developed nitride diffusion layer, high cyclic fatigue.1 cl, 1 ex

ethod for high density plasma nitridng // 2611251
FIELD: chemistry.SUBSTANCE: invention relates to thermochemical plasma-assisted treatment of surfaces and is applicable in building of aircraft engine components subjected to cyclic stress to improve engine performance. It also enhances nitriding reaction. The nitriding of titanium alloy surfaces using a plasma glow discharge as a medium for the reaction involves vacuum heating of the titanium alloy parts in high density nitrogen plasma, where the high density nitrogen plasma is formed in the presence of crossed electric and magnetic fields. The nitriding reaction proceeds in N2 15% + Ar 85% mix at a pressure of 80 Pa and temperature of 500÷550°C within 1.5÷2 hours with a further replacement of gas mix by N2 60% + Ar 40% at a pressure of 40 Pa, exposure time - 1 hour. The reaction is followed by post treatment vacuum cooling of the parts.EFFECT: invention is an enhanced nitriding process involving formation of an effective nitride diffusion coating on titanium alloys requiring resistance to wear and erosion/corrosion while maintaining their mechanical properties and cyclic fatigue strength.1 dwg, 1 ex
ethod of nitriding parts in glow discharge at different depth of nitrated layer // 2611248
FIELD: technological processes.SUBSTANCE: invention relates to chemical-thermal treatment and can be used in machine building and other industries for surface hardening materials. Method of nitriding a steel part in glow discharge with provision on said part sections with various depth of hardened layer involves vacuum heating of steel part in high-density nitrogen plasma, formed between surface of part and perforated screens for producing hollow cathode effect. Obtaining on said part sections with various depth of hardened layer is provided by controlling plasma density through perforated screens with given values of transparency, having different hole width and different distance between holes, and controlling distance from screens to surface of part.EFFECT: production of nitrated part sections with different depth of hardened layer in one process cycle, higher process efficiency.1 cl, 3 dwg, 1 ex

ethod of ion nitration of titanium alloys // 2611003
FIELD: metallurgy.SUBSTANCE: method of ion nitration of titanium alloys in nitrogen-argon gas mix at 60 % N2-40 % Ar ratio involves ion nitration in magnetic field at 650-750 °C in vacuum chamber and 500-600 V voltage in the air gap, first at low gas mix pressure of 10-1-1 Pa for 4 hours, then at the gas mix pressure of 100-300 Pa for 1 hour. It allows for obtaining of developed diffusion zone with increased micro-hardness and nitrated layer depth in a titanium base.EFFECT: improved operation characteristics of products.1 dwg, 1 ex

Ultrahigh-strength multiphase steel with improved properties during production and processing // 2610989
FIELD: metallurgy.SUBSTANCE: invention relates ultrahigh-strength multiphase steel having a particular composition, as well as to production a cold- or hot-rolled steel strip, wherein required multiphase microstructure is generated during continuous annealing. For uniform distribution of mechanical properties of strip, having different cross section and thickness, cold- or hot-rolled strip is heated to temperature of 700–950 °C, then heated steel strip is cooled at a rate of 15–100 °C/s from annealing temperature to first intermediate temperature of 300 °C to 500 °C, then steel strip is cooled at a rate of 15–100 °C/s to a second intermediate temperature of 200 °C to 250 °C; then steel strip undergoes cooling in air at a rate of 2 to 30°C/s to ambient temperature or is cooled at a rate of 15–100 °C/s from first intermediate temperature to ambient temperature.EFFECT: obtaining maximum strength of steel.15 cl, 6 dwg

Aluminium zinc plating // 2610811
FIELD: manufacturing technology.SUBSTANCE: invention relates to coin workpiece processing containing aluminium or aluminium alloy. Applying zinc coating first layer onto coin workpiece using immersion zinc plating in coatings application drum. Removing zinc coating first layer. Applying zinc coating second layer onto coin workpiece using immersion zinc plating in coatings application drum. Removing zinc coating second layer. Applying zinc coating third layer onto coin workpiece using immersion zinc plating in coatings application drum. Coating coin workpiece with one or more metal or metal alloys layers in absence of cyanide. Performing annealing to create metal diffusion between coin workpiece and one or more coating layers, in order to facilitate adhesion.EFFECT: result is durable and safe coins with multilayer coating.24 cl, 21 dwg, 6 tbl

ethod for industrial production of kvass beverage // 2610671
FIELD: food industry.SUBSTANCE: invention relates to a method for production of a fermented product capable to mixing with at least a sweetener and water to produce a kvass beverage. Method includes a step (a), of mixing kvass wort with a fermented sweetener, step (b) of performing fermentation of product from step (a) using yeast to obtain ethanol content of 2.5–5 % (vol), at step (c) performing separation of yeast product at stage (b) then stage (d), of distilling fermented separated product of wort from step (c) to produce concentrated wort with dry substances content of at least 65 %, measured in form of refractometric Brix, and a step for thermal treatment of wort concentrate a step (d) to produce a fermented product, which is concentrated fermented kvass wort; or method includes following steps: mixing kvass wort concentrate in an amount of 100 % of fermented sweetener and water to obtain wort with dry substances content 15–34 %, measured in form of refractometric Brix (a1); step for fermentation of product from step (a1) using yeast to obtain 4–8 % (vol/vol) ethanol (b1) and step (c1) for separation of yeast from product from step (b1) to produce a fermented product, which is fermented wort.EFFECT: method provides a process of fermentation before final mixing of kvass, which enables to carry out process final mixing and final production of kvass outside of fermentative production.19 cl, 3 dwg, 18 tbl, 3 ex
ethod for protection of gas turbine components made from nickel alloys // 2610188
FIELD: chemistry.SUBSTANCE: invention relates to metallurgy and can be used to protect parts against high-temperature oxidation. The method for protection of gas turbine components from nickel alloy comprises vacuum deposition of the first coating layer of nickel-based alloy comprising, in weight.%: 0.5-3.0 Hf, 10.0-20.0 aluminum, 5.0-10.0 chromium, rest - nickel, on the outer surface of parts. Deposition of the second layer of aluminum alloy containing, in weight %: 0.5-3.0 Hf, 10,0-20,0 Ni, rest - Al is carried out. Then, vacuum annealing is carried out.EFFECT: manufacturing of a heat-resistant coating at the operating temperatures of nickel-alloy gas turbine parts to 1250°C.2 cl, 4 tbl, 3 ex
ethod for producing amorphous films of chalcogenide glass-based semiconductors with phase memory effect // 2609764
FIELD: chemistry.SUBSTANCE: used bismuth modified chalcogenide semiconducting material of Ge2Sb2Te5. The said material is mechanically activated. Carried out non-equilibrium high-frequency ion-plasma deposition of material in the gas mix of argon and hydrogen at a ratio of 90:10. Material deposited on a dielectric layer in medium vacuum at a pressure between 0.5 to 1.0 Pa and radio-frequency voltage range of 400 to 470 V.EFFECT: increase of information transfer speed and reduction of power intake.1 ex
Zirconium pretreatment compositions containing lithium, associated methods for treating metal substrates, and related coated metal substrates // 2609585
FIELD: metal processing.SUBSTANCE: invention relates to pretreatment of metal substrates, such as cold rolled steel and electrogalvanised steel. Pretreatment composition for treatment of metal substrates includes a Group IIIB and/or Group IVB metal, free fluoride and lithium, in amount from 5 to 500 parts per million in terms of total weight of pretreatment composition, wherein molar ratio of Group IIIB and/or Group IVB metal to lithium ranges from 100:1 to 1:10, said pretreatment composition basically does not contain a resinous binder component and chromate. Methods include contacting metal substrate with a pretreatment composition.EFFECT: invention provides improved corrosion resistance of metal substrates without using chromates and/or phosphates.39 cl, 3 tbl, 2 ex

Tape from aluminium alloys with improved surface optics and method of its manufacture // 2609576
FIELD: metallurgy.SUBSTANCE: invention refers to the manufacture of aluminium alloy tape. Aluminium alloy tape is manufactured by hot and/or cold rolling and consists of aluminium alloy of AA 5182, AA 6xxx or AA 8xxx type, provided that the finished, rolled tape of the aluminium alloy after degreasing shows an increase in the brightness value L* (ΔL) compared with non-degreased state more than 5 with colorimetric measurement of the surface in a colour space CIE L*a*b* using a standard light source of D65 and at an observation angle 10° with the exception of direct reflections in geometry 45°/0°, which is achieved by degreasing with the use of alkaline etching solution and subsequent acid wash of the aluminium alloy tape.EFFECT: invention is notable for distinctly improved surface optics with distinct visual perception of lighter surface than conventional tapes made of aluminium alloy, consisting of the same aluminium alloy.13 cl, 3 dwg, 1 tbl
ethod of restoring friction surfaces // 2609574
FIELD: physics.SUBSTANCE: invention relates to triboengineering and can be used for in-place restorative repair, prevention of wear of working surfaces of machine parts susceptible to wear, such as piston assemblies, bearing friction pairs and pinion units. The method of restoring friction surfaces of a metal article with an oil reservoir includes preparation of a powder mixture consisting of dispersed particles with size of 200 to 300 nm and having the following ratio of components, wt %: antigorite (Mg6Si4O10(OH)8) 10-20, lizardite (Mg3Si2O5(OH)4) 10-30 and chrysotile (Mg6Si4O10(OH)8) 40-90, and placing said powder mixture in oil. From said powder mixture placed in oil, a modifier composition is obtained, which is fed into the oil reservoir of the article. Said oil is used with viscosity of 20 to 30 cSt, and said powder mixture additionally contains chrysotile.EFFECT: invention increases periods between routine restorative works, reduces costs on restorative repair and improves operating efficiency of the article, and prolongs operating time of the lubricating material without replacement.
ethod of obtainment of bases for corrosion inhibitors of prolonged action for process equipment protection (versions) // 2609122
FIELD: metallurgy.SUBSTANCE: invention refers to corrosion protection for metals, namely methods of obtaining polymer bases for compositions ensuring reliable protection in media containing dissolved hydrogen sulphide or carbon dioxide showing high sorption activity towards metal surfaces, and can be applied in oil production and processing industries for process equipment protection. Method involves condensation of alkoxylated tall fatty amine obtained by reaction of tall fatty amine with ethylene or propylene oxide, with anhydride of a dibasic acid from the range including: malonic acid, succinic acid, glutaric acid, maleic acid, sebacic acid, ortho-phthalic acid, at the following component ratio, wt %: tall fatty amine 40-65; ethylene or propylene oxide 15-33; the rest is anhydride of dibasic organic acid; obtained preproduct of equimolar opening of dibasic organic acid anhydride is added to excessive alkoxylated tall fatty amine at the molar ratio of alkoxylated tall fatty amine to the said product equal to 3: 2, obtaining a base for corrosion inhibitor in the form of an oligomerous product. In the second variant, the method is implemented in the presence of a base catalyst.EFFECT: obtainment of corrosion inhibitors of prolonged action by a convenient method out of non-toxic raw materials.2 cl, 1 tbl, 15 ex

ethod of underground structure steel section protection against electrochemical corrosion in aggressive environment // 2609121
FIELD: technological processes.SUBSTANCE: invention relates to field of underground metal structures protection against electrochemical corrosion. Method involves following operations: connecting additional sources of direct current on protected section in electrical safety installation electric circuit with drainage points on underground structure by means of cable from each additional direct current source creating protection zones from each additional direct current source, determining effective protection zone by induced negative potential value from minus 0.90 V up to minus 2.50 V from additional direct current source connection point to point on protected structure, in which structure longitudinal resistance will be equal to “structure-to-ground” transitional resistance, and anodic grounding is located within any protection zone.EFFECT: eliminating anode zones formation on protected underground structure, leading to corrosion destructions.1 cl, 4 tbl, 5 dwg

Glass with optically transparent protective coating and method of its production // 2608858
FIELD: optical system; manufacturing technology.SUBSTANCE: invention relates to glass with optically transparent coating and method of its production and can be used in production of optical elements of spacecraft. Glass with optically transparent protective coating has substrate of optically transparent glass and applied on substrate two-layer transparent coating. Coating consists of two layers, lower layer is nano-metal with thickness from 20 to 40 nm, upper ceramic layer is made of aluminium nitride and silicon nitride with thickness from 5 to 15 mcm with nanocrystalline or amorphous nano-crystalline or amorphous structure. Method consists of three stages: 1) bombardment of substrate surface with pulse-periodic high-energy beams of ions of coating lower layer metal, 2) unipolar pulse magnetron deposition of lower nanocrystalline metal layer, 3) bipolar pulse magnetron deposition of upper double-phase ceramic layer, carried out in single vacuum cycle.EFFECT: technical result consists in production of glass with high resistance to impact effect of high-speed solid particles.11 cl, 8 dwg, 3 ex, 2 tbl

Processes and apparatus for forming products from atomised metals and alloys // 2608857
FIELD: metallurgy.SUBSTANCE: invention relates to systems and apparatus for producing products from atomised metals and alloys. Stream of molten alloy and/or a series of droplets of molten alloy are produced. Molten alloy is atomised to produce electrically-charged particles of molten alloy by impinging electrons on stream of molten alloy and/or series of droplets of molten alloy. Electrically-charged molten alloy particles are accelerated with at least one of an electrostatic field and an electromagnetic field. Accelerating molten alloy particles are cooled to a temperature that is less than a solidus temperature of molten alloy particles so that molten alloy particles solidify while accelerating. Solid alloy particles are impacted onto a substrate and impacting particles deform and metallurgically bond to substrate to produce a solid alloy preform.EFFECT: obtaining fine-grain homogeneous structure of workpieces.37 cl, 26 dwg

Friction part operating in environment with lubrication // 2608612
FIELD: machine building.SUBSTANCE: present invention relates to friction parts, operating in environment with lubrication, containing friction modifier, wherein, at least, one of parts is covered with coating, wherein friction modifier is MoDTC, coating is different from DLC and for, at least, one part is chromium nitride, wherein chromium nitride is present in crystallization with NaCl-type structure with microhardness of 1,800+/-200 HV. Disclosed invention also relates to use of friction parts.EFFECT: technical result of present invention is combination of chrome nitride and MoDTC properties with provision of considerable reduction of friction coefficient without reducing hardness.4 cl, 3 tbl, 1 dwg
ethod of coating application on alloy wheels // 2608530
FIELD: technological processes.SUBSTANCE: invention relates to application of coating on alloy wheels, coating mixtures for use in this method, as well as obtained so alloy wheels with coating. Method of coating application on alloy wheels is performed with at least three layers, including primer layer, layer of main varnish and layer of transparent varnish. Each layer represents various coating mixtures layer. Primer layer has two layers, wherein first layer is located directly on substrate, and second layer is located on first layer. Method involves providing substrate, including light alloy wheel workpiece from aluminium casting alloy subjected to machining. Besides, method involves application of primer layer directly onto substrate. Primer layer contains at least one radiation curable coating mass with acid number from 10 to 120 mg KOH/g. Method also includes application of primer second layer, application of main varnish and application of transparent varnish layer on light-alloy wheels outer side. Transparent varnish layer includes radiation curable colorless varnish layer, having at least 1 mol of reactive groups capable of radical polymerization with double bonds per kilogram of coating mass. Then performing hardening of different cover mixtures layers using radiation.EFFECT: technical result of invention is decrease in energy consumption and/or drying, film-formation and/or curing time and/or reduced use of volatile organic compounds.8 cl, 4 ex
Anticorrosion material // 2608483
FIELD: chemistry.SUBSTANCE: invention relates to anticorrosive materials based on volatile corrosion inhibitors and can be used for protection of ferrous and nonferrous metals and resistance against atmospheric corrosion during transportation and storage. Anticorrosion material based on silica gel is impregnated with volatile corrosion inhibitor and contains, wt%: triethanolamine 0.5–1, dimethylethanolamine 65.0–67.0, diethanolamine 0.5–1.0, benzoic acid and silica gel – balance up to 100.EFFECT: technical result consists in simplification of composition of anticorrosion material ensuring high anticorrosion protection of ferrous and nonferrous metals and articles therefrom in aggressive environments.1 cl, 3 tbl

Fluorocarbon polymer gas-phase chemical deposition // 2608482
FIELD: technology of manufacturing, chemistry.SUBSTANCE: invention relates to methods of forming a thin film based on a fluorocarbon polymer on surface of a component part. Method comprises steps of passing initial gas through a porous heating element with randomly arranged pores, wherein said porous heating element has a temperature sufficient for splitting initial gas with formation of reactive particles (CF2)n, where n=1 or 2 radicals, wherein reactive particles are located near surface of component part, on which must be formed fluorocarbon polymer, and maintaining temperature of surface of component part below temperature of porous heating element for stimulation of deposition and polymerisation of (CF2)n, where n=1 or 2 radicals, on surface of component part. In embodiment of said method, initial gas is selected from a group, consisting of CF3CF(O)CF2 (HFPO), C2F4, C3F8, CF3H, CF2H2, CF2N2, CF3COCF3, CF2ClCOCF2Cl, CF2ClCOCFCl2, CF3COOH, CF2Br2, CF2HBr, CF2HCl, CF2Cl2 and CF2FCl, C3F6, C3F4H2, C3F2Cl4, C2F3Cl3, C3F4Cl2, (CF3)3PF2, (CF3)2PF3, (CF3)PF4, (CF3)3P, (CF3)2P-P(CF3)2 and (CF3)2PX, and CF3PX2, where X is F, Cl or H.EFFECT: obtaining thin films based on fluorocarbon polymer, which are smooth homogeneous coatings, characterised by sufficient flexibility to withstand mechanical bending of three-dimensional part.15 cl, 3 dwg

ethod of plasma sputtering // 2608247
FIELD: machine building.SUBSTANCE: invention relates to coating application method by thermal spraying, in particular, to coating application on cylinder sleeve internal surface by plasma-arc sputtering. Method involves coating application from alloy on cylinder inner surface by means of plasma sputtering device rotation around wire and device movement along cylinder longitudinal axis, so, that coating is applied on cylinder inner surface along circumference and along cylinder axial direction, wherein device comprises plasma torch nozzle, to which plasma gas is supplied, and auxiliary nozzles, to which carrier gas is supplied, carrier gas and/or plasma gas flow rate change is carried out with help of control element depending on device axial position inside cylinder, besides, first lower gas flow rate is carried out in upper dead point area and in lower dead point area, and second, higher gas flow rate, is in center area and upper area at engine cylinder sleeve cover, wherein upper dead point area is borders to upper area at cover and to center area, and cylinder lower dead point area is borders to center area.EFFECT: coating application by thermal spraying.6 cl, 2 dwg
ethod of determining microhardness of nanocomposite coating with high wear resistance as per ratio of metal and ceramic phases in it // 2608159
FIELD: materials science.SUBSTANCE: invention relates to materials science and can be used in various fields of state-of-the-art electronics, alternative power engineering and machine building. Method of determining microhardness of a nanocomposite coating with high wear resistance as per the ratio of metal and ceramic phases in it is characterized by that determined are values of microhardness for a metal and a ceramic coatings of different chemical compositions free from impurities of the ceramic or the metal phases, respectively, then produced is a coating with a specified chemical composition and the specified percentage of the above said phases with a certain pitch with varying the percentage ratio of metal-to-ceramics phases in the coating from zero to maximum. Then determined are values of the obtained coating microhardness at the preset ratio of the above said phases. Basing on the obtained data an artificial neural network is created and trained, that is followed by testing the produced neural network model by sequential elimination from the statistical sample used for its training of the neural network model factors in the form of experimentally measured values including microhardness of the metal coating (Hm), microhardness of the ceramic coating (Hc) and concentration of the metal phase in the composite (Cm) with subsequent determination using the obtained neural network model of its output parameter in the form of the nanocomposite coating microhardness value (H) and comparing the obtained theoretical values with the initial experimental data. Then the said artificial neural network is entered with data on chemical composition of the metal and the ceramic phases, their percentage in the obtained coating and by means of the artificial neural network determined is the obtained nanocomposite metal-ceramic coating microhardness value from the ratio of the metal and the ceramic phases. In particular cases after comparing the obtained theoretical value of nanocomposite coating microhardness (H) with the initial experimental data the produced neural network model is corrected.EFFECT: provided is higher wear resistance at simultaneous reduction of the coating production cost and high stability of the determined parameters used for the coating application.1 cl, 4 dwg
ethod of producing nanocomposite metal-ceramic coatings with required microhardness values // 2608158
FIELD: materials science.SUBSTANCE: invention relates to materials science and can be used in various fields of state-of-the-art electronics, alternative power engineering and machine building. Method of producing nanocomposite metal-ceramic coatings with required microhardness values involves providing in the obtained coating a required percentage ratio of metal and ceramic phases at a certain chemical composition of the said phases, herewith determined are values of microhardness for a metal and a ceramic coatings of different chemical compositions free from impurities of the ceramic or the metal phases, respectively, then produced is a coating with a specified chemical composition and the specified percentage of the above said phases with a certain pitch with varying the percentage ratio of metal-to-ceramics phases in the coating from zero to maximum. Then determined are obtained values of the coating microhardness at the preset ratio of the above said phases. Basing on the obtained data an artificial neural network is created and trained, then the said artificial neural network is entered with data on chemical composition of the metal and the ceramic phases, percentage ratio of the said phases in the obtained coating, and by means of the artificial neural network determined is the obtained nanocomposite metal-ceramic coating microhardness value at the entered ratio of the metal and the ceramic phases. In particular cases the nanocomposite coating microhardness value is determined by recalculating the microhardness for a solid sample by entering a conversion coefficient.EFFECT: provided is higher wear resistance at simultaneous reduction of the coating production cost and high stability of the determined parameters used for the coating application.1 cl, 4 dwg
ethod of producing wear-resistant nanocomposite coating with specified value of microhardness on surface of polished glass-ceramic plate // 2608157
FIELD: materials science.SUBSTANCE: invention relates to materials science and can be used in various fields of state-of-the-art electronics, alternative power engineering and machine building. Method of producing a wear-resistant nanocomposite coating with a specified value of microhardness on the surface of a polished glass-ceramic plate by ion-beam spraying involves providing required percentage of metal and ceramic phases in the obtained coating at a certain chemical composition of the said phases, herewith determined are values of microhardness for a metal and a ceramic coatings of different chemical compositions free from impurities of the ceramic or the metal phases, respectively, then produced is a coating with a specified chemical composition and the specified percentage of the above said phases with a certain pitch and with the percentage ratio of metal-to-ceramics phases varying in the coating from zero to maximum, then determined are values of the obtained coating microhardness at the preset ratio of the above said phases. Basing on the obtained data an artificial neural network is created and trained. Then a produced neural network model is tested by sequential exclusion from the statistical sampling used for its training, of the neural network model factors in the form of experimentally measured values including microhardness of the metal coating (Hm), microhardness of the ceramic coating (Hc) and concentration of the metal phase in the composite (Cc) with subsequent determination using the obtained neural network model of its output parameter in the form of the nanocomposite coating microhardness value (H) and comparing the obtained theoretical values with the initial experimental data. Then the said artificial neural network is entered with microhardness values for the metal and the ceramic phases without impurities and the percentage ratio of the said phases in the obtained coating and by means of the artificial neural network determined is the obtained nanocomposite metal-ceramic coating microhardness value at the entered ratio of the metal and the ceramic phases. In particular cases after comparing the obtained theoretical values of the nanocomposite coating microhardness (H) with the initial experimental data the produced neural network model is corrected.EFFECT: provided is higher wear resistance at simultaneous reduction of the coating production cost and high stability of the determined parameters used for the coating application.1 cl, 4 dwg
 
2551366.
Up!