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(318327)
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(12971)
ethod of forming microrelief on surface of metal articles // 2642243
FIELD: metallurgy.SUBSTANCE: method of forming the microrelief on the surface of metal articles includes treatment of article surface in vacuum with concentrated flow of energy, localised in cathode spots of cathode spots of vacuum-arc discharge moving along the article surface, burning between the article being the cathode and anode, in this case surface treatment of the article is carried out in vacuum pressure range from 10 Pa to 200 Pa.EFFECT: simplification of microrelief formation on the surface of metal articles, elimination of decarburization and oxidation of the treated surface, possibility to process surfaces of complex geometric shape with increase of process efficiency due to high movement rate of cathode spots.5 dwg
ethod for production of coatings // 2642240
FIELD: blasting.SUBSTANCE: invention relates to technology for production of coatings on metals using the energy of explosives and can be used in the manufacture of parts for energy and chemical plants with enhanced heat resistance. The pack is prepared for welding with a symmetrical arrangement between two aluminium plates with 1.5-2 mm thickness, the plates of tri-metal are plates of alloyed steel on both sides with clad low-carbon steel. The thickness of said plate is chosen not less than 3 mm, the thickness of its cladding layers is within 0.3-0.5 mm. The same explosive charges are arranged on the two sides of the pack on the surfaces of aluminium plates, and explosion welding is carried out by explosion with simultaneous initiation of detonation in charges. Detonation velocity in each explosive charge equals to 2000-2700 m/s, the explosive charge height and the welding gaps between the metals to be joined are selected from the condition to obtain impact velocity of aluminium plates with the cladding layers of low carbon steel of the tri-metal plate within 370-490 m/s. Thermal treatment of welded five-layer blank to form solid intermetallide diffusion interlayers between aluminium layers and the layers low-carbon steel is carried out at 660-665°C for 0.7-1 H. Then it is cooled with the furnace to temperature 640-650°C. Holding is carried out at this temperature for 2-3 hours with subsequent air cooling up to spontaneous separation of aluminium layers from low-carbon steel of intermetallide diffusion layers with formation of solid heat-resistant coating from intermetallides of aluminium-iron system on the surfaces of low-carbon steel layers.EFFECT: provided simultaneous production of intermetallic coatings on both sides of said tri-metal plate having high heat resistance, low roughness amplitude with reduced susceptibility to crack formation during heat changes without the use of deficient and expensive nickel in the process scheme, with reduced number of explosion welding operations up to one.2 dwg, 1 tbl, 4 ex

Coating plasma-arc device // 2642237
FIELD: electricity.SUBSTANCE: invention can be effectively used in the formation of protective and biocompatible layers of dental and orthopaedic implants, in the manufacture of electrolytic cell technological layers of thin-film integral accumulators and in chemical reactors, which operate in aggressive media and at high temperatures. There is the cathode (3), anode (4), encircling it, and the shielding electrode (5) of the cathode assembly (2) are axially symmetric in the vacuum chamber (1) with a vertically disposed longitudinal axis O-O1. The device also comprises of a magnetic system, a substrate (22) holder (21) and a power supply source (25. The cathode (3) is made of a current-conducting material, and the shielding electrode (5) is located between the cathode (3) and the anode (4). The magnetic system consists of sequentially placed first electromagnetic coil (10) with an end surface (11) in the plane perpendicular to the longitudinal axis O-O1 of the chamber (1) and the second electromagnetic coil (15). The power supply source (25) is connected to the anode (4) and the cathode (3), so that an electric arc arises between them. The cathode assembly (2) is provided with the first drive mechanism (30) with the first power unit (42) and the second drive mechanism (33). The cathode (3) is installed in the chamber (1) with its working surface (35) being in the plane perpendicular to the longitudinal axis O-O1 of the chamber and adapted to move along the longitudinal axis O-O1 of the chamber by the first drive mechanism to provide alignment of the disposition plane of the working surface (35) of the cathode (3) with the disposition plane of the end surface (11) of the first electromagnetic coil (10) and with the cathode (3) being rotatable around the longitudinal axis O-O1 of the chamber through the second drive mechanism (33).EFFECT: invention allows you to save the optimum conditions of the cathode position in relation to magnetic fields, that makes the coating process controlled and the coating characteristics stable.8 cl, 4 dwg
Iron-based pipeline element, containing outer coating, method of its manufacture and underground pipeline, implemented from such pipeline elements // 2641793
FIELD: metallurgy.SUBSTANCE: group of inventions can be used in the manufacture of metal pipes with an anticorrosion coating, as well as in the construction of underground pipelines from such pipes. The iron-based pipeline element (1), in particular cast iron-based, comprises of an outer coating (9) including: the first layer (11), the second adhesive layer (13), disposed on the first layer (11), and the third layer (15), located on the second layer (13). The first layer (11) includes at least one porous zinc/aluminium alloy layer containing from 5 to 60 wt % of aluminium. The third layer (15) contains a synthetic organic material.EFFECT: increased resistance to corrosion in case of damage to the outer surface of the pipeline.17 cl, 1 dwg

Device for gas-thermal detonation spraying of coating layer with pulse dosing of powder feed // 2641767
FIELD: machine engineering.SUBSTANCE: device for gas-thermal detonation spraying of coating layer with a pulse dosing powder feed contains a body 1, which has a capacity for powder 2 with the powder 3, a distributing disc 4 mounted on the axis 7 with dosing feed cylindrical cavities 5 formed on the peripheral part of the disc 4, a valve 10 with a rod 11, which is connected to a shut-off device 12, a channel 13, connected with a trunk 14, a control unit 15. The disc 4 in the area of the dosing feed cylindrical cavities 5 on each side is provided with a concentric protrusion. The edges of the protrusion are arranged symmetrically with respect to the dosing feed cylindrical cavities 5. The disc 4 is provided with bypass holes 6 arranged around the circumference inside the concentric protrusion of the disc 4. In the body, a curvilinear channel 8 is provided below the disc, the inlet hole of which is located opposite the bypass holes 6, and the outlet hole is located on the same axis with the dosing feed cylindrical cavity 5 and the channel 9, connected with channel 13.EFFECT: providing the possibility to simplify the dosage and increase its accuracy, compactly distribute the powder in the head of the gas detonating object and reduce its unproductive expenditure, improve the quality of the applied coating, and increase the reliability of the device.4 dwg
ethod of producing wear-resitant coating for cutting tool // 2641600
FIELD: technological processes.SUBSTANCE: vacuum-plasma application of wear-resistant coating, made of niobium, titanium and zirconium nitride is performed at the following ratio of the components, at. %: niobium 65.7, titanium 25.4, zirconium 8.9. The coating is applied by three cathodes, which are horizontal in one plane, the first and the second one of which are made of niobium and installed opposite each other, and the third cathode is composite of titanium and zirconium and placed between them.EFFECT: as a result of the application of the wear-resistant coating, the operating capability of the cutting tool is increased.1 tbl
ethod and device for producing tungsten article by layer-by-layer application of tungsten // 2641596
FIELD: metallurgy.SUBSTANCE: scanning of isothermally heated horizontal plane of article under formation corresponding to section of 3D model is conducted, a dosed discrete-point jet feeding of gaseous tungsten hexafluoride and hydrogen gas to said plane is carried out, subsequent vertical movement of the scanned plane with a solid surface applied to it by interaction of said initial components on a given pitch down and scanning in accordance with the subsequent configuration of the section of the 3D model. Discrete-point supply of tungsten hexafluoride is carried out by means of a central jet. Hydrogen is supplied by a peripheral coaxial jet around jet of tungsten hexafluoride. Said discrete-point application of tungsten is carried out in two stages, at first of which feeding of mentioned initial gas components is carried out in stoichiometric ratio, and at the second one supply of tungsten hexafluoride is suspended when supplying hydrogen. Device for realisation of said method includes a tank with an open upper end where horizontal substrate is placed for obtaining a tungsten product and which is fixed on a vertical lift, a two-coordinate scanning device located above the tank and connected with a branch pipe for feeding the starting components in the form of gaseous tungsten hexafluoride and hydrogen gas. The supply branch pipe for said starting components supply includes an external branch pipe for supplying hydrogen gas, inside which there is a coaxial central branch pipe for gaseous tungsten hexafluoride supply. Said central branch pipe is provided with a device for monitoring and controlling the flow rate and temperature of gaseous tungsten hexafluoride, and a cutoff valve for feeding tungsten hexafluoride electrically connected to the microprocessor, made with the possibility of controlling the cut-off valve of the supply of the hexafluoride. The horizontal substrate is equipped with an electric heater that maintains the temperature of the upper surface of the article under formation within the specified limits. Aspiration device arranged in side surface of said tank is made in form of tubular element located along perimeter of the upper part of the tank side surface and have suction holes or slit. Outlet branch pipe of the aspiration device is connected to the suction branch pipe of the blowing device.EFFECT: provided method and devices enable production of coatings or articles of tungsten at temperatures of 300-375 degrees without metallurgical processes, plastic deformation and mechanical treatment with the use of not only inert gas, but also air as a gas medium in the working volume of the device.3 cl, 1 dwg

ethod for obtaining highly porous osteo-integrating coating on implants from titanium alloys // 2641594
FIELD: metallurgy.SUBSTANCE: method comprises thermodiffusion hydrogen saturation of the implant and vacuum annealing. Before thermodiffusion hydrogen saturation and vacuum annealing, a porous coating is applied on the surface of the implant by diffusion welding with the help of welding of titanium alloy fibres at a temperature of 850-950°C to the surface of the implant from titanium alloys, hydrogen saturation is carried out at a temperature of 600-650°C to a hydrogen concentration of 0.5-0.8 wt %, and the subsequent vacuum annealing - to a hydrogen concentration of not more than 0.008 wt %.EFFECT: shearing force of the coating is increased from the monolithic substrate while maintaining its structure and properties.4 cl, 1 dwg, 1 tbl, 8 ex
ethod for production of multilayer coating for cutting tool // 2641441
FIELD: technological processes.SUBSTANCE: application of multilayer coating is performed. First, the bottom layer of titanium and chrome nitride is applied at the following ratio of the components, wt %: titanium 85.75-90.25, chrome 9.75-14.25. Then, the intermediate layer of nitride of titanium, chrome and aluminium compound is applied at the ratio of the components, wt %: titanium 70.5-79.5, chrome 6.5-9.5, aluminium 14.0-20.0. Then, the top layer of titanium nitride is applied. The coating layers are applied with the help of three cathode, which are horizontal in one plane, the first of which is composite of titanium and chrome, the second one is made of a titanium and aluminium alloy and located opposite the first one, and the third cathode is made of titanium and placed between them, while the bottom layer is applied with the help of the first and third cathode, the intermediate layer is applied using all three cathodes, and the top layer is applied with the help of the third cathode.EFFECT: higher operating capability of the cutting tool.1 tbl
ethod for production of multilayer coating for cutting tool // 2641440
FIELD: technological processes.SUBSTANCE: application of multilayer coating is performed. First, a lower layer of titanium and aluminium nitride is applied, with their ratio, wt %: titanium 70.0-79.0, aluminium 21.0-30.0. Then, an intermediate layer of titanium, aluminium and chrome compound nitride is deposited at a ratio, wt %: titanium 70.5-79.5, aluminium 14.0-20.0, chrome 6.5-9.5. Then, the top layer of titanium nitride is applied. The application of the coating layers is carried out by three cathodes arranged horizontally in one plane, the first of which is made of a titanium and aluminium alloy, the second one is made of titanium and chrome and arranged opposite the first one, and the third one is made of titanium and arranged between them, while the lower layer is applied using the first cathode and the third cathode, the intermediate layer - using all three cathodes, and the upper layer - using the third cathode.EFFECT: higher operating capability of the cutting tool.1 tbl
ethod for production of multilayer coating for cutting tool // 2641438
FIELD: technological processes.SUBSTANCE: method for production of multilayer coating for a cutting tool, in which ion-plasma application of multilayer coating is carried out, consisting of a lower nitride layer of titanium and silicon compound with component ratio, wt %: titanium 97.9-98.5, silicon 1.5-2.1, an intermediate nitride layer of titanium, silicon and molybdenum compound in component ratio, wt %: titanium 93.1 -95.0, silicon 1.0-1.4, molybdenum 4.0-5.5, and an upper layer - of titanium nitride. The coating layers are applied horizontally in one plane by three cathodes, the first of which is made of a titanium and silicon alloy, the second one is made of a titanium and molybdenum composite and is placed opposite the first, and the third is made of titanium and is placed between them. The lower layer is applied using the first and third cathodes, the intermediate layer - using all three cathodes, and the upper layer - using the third cathode.EFFECT: increased cutting tool serviceability.1 tbl

ethod of applying multicomponent coating by electric arc metalization // 2641427
FIELD: technological processes.SUBSTANCE: at least, two metallizers with two wires in each metallizer are used. Metallizers are positioned at an angle α1 in the range of 35 to 45° between their axes and at an angle α2 in the range of 18 to 22° to the normal to the machined surface so that the zone of the electric arc is located at a distance of 130 to 150 mm from the surface to be treated. In the metallization process, the flows of a dispersed mixture of metals converge to a point on the surface to be treated. Wires of Cu and Sn composition are used with a diameter of 1.5-2.5 mm, while choosing wires with a component ratio, which allows to obtain an optimal composition coating as a result of mixing components of all wires.EFFECT: regulating the physico-chemical composition of the applied metal antifriction coating and obtaining a heterogeneous complex composition with improved properties using a common type of the metallizer.3 cl, 1 dwg, 1 ex, 3 tbl

ethod of producing steel parts with high-productivity coating hardened in press // 2641279
FIELD: metallurgy.SUBSTANCE: invention relates to a pre-coated sheet or a workpiece comprising a steel substrate for heat treatment, which is overlapped by a preliminary coating over at least one section of at least one of its main surfaces. The pre-coating comprises at least one layer of aluminium or an aluminium alloy, covered over at least one section of above-mentioned pre-coating by a polymerized layer having thickness of 2-30 mcm. The polymerized layer consists of a polymer which contains no silicon and which nitrogen content does not exceed 1 wt % in terms of the weight of the above-mentioned layer. The above-mentioned polymerized layer contains carbon-containing pigments in an amount of 3-30 wt % in terms of weight of the said layer.EFFECT: enhancement of coating reliability.22 cl, 9 dwg, 9 tbl, 4 ex
Corrosion inhibitor to protect equipment for production of crude oil, pipelines and reservoirs for crude oil and method of its production // 2641148
FIELD: oil and gas industry.SUBSTANCE: inhibitor containing imidazoline derivatives, oxyethylenated fatty monoamines and alcoholic solvents containing, wt %: component a) in amount of 0.155-85 produced in the result of the following processes: a) neutralizing 0.1-50 wt % i) produced mixture of modified imidazoline derivatives of said formulae (1) and (2), said mixture being the condensation product of diethylenetriamine (DETA) with fatty acids containing 12-22 atoms of C and aliphatic dicarboxylic acids containing 4-12 atoms of C with molar ratio of DETA to fatty acids and aliphatic dicarboxylic acids 1:0.80-0.99:0.01-0.10 at the temperature of at least 140°C to produce the mixture of aminoamides of said general formulae (3) and (4), after which the temperature is raised to more than 180°C and condensation reaction is carried out further up to produce the mixture of said formulae (1) and (2) compounds, possibly with addition of 0.05-20 wt % ii) condensation product of DETA with fatty acids containing 12-24 atoms of C produced at temperature of 180-280°C with general said formula (1') with aliphatic and/or aromatic monocarboxylic acid containing 1-7 atoms of C in amount from 0.025 to 25 wt % of total inhibitor weight with weight ratio of mixture compounds of general formulae (1), (2) and, possibly,(1') to said monocarboxylic acid 1:0.15-0.70 to produce intermediate product representing a mixture of compounds of general formulae (5), (6) and, possibly, (5') as well as a mixture of non-neutralised compounds of formulae (1), (2) and, possibly, (1'); and b) further neutralizing the resulting intermediate product, wherein said intermediate product is a mixture of compounds of general formulae (5), (6) and, possibly, (5 ') and a mixture of non-neutralised compounds of general formulae (1), (2) and, possibly, (1') by treatment with fatty acids containing 12-22 atoms of C in amount of 0.03-wt % of inhibitor total weight and/or polymers of fatty acids containing 18-54 atoms of C in amount of 0.03-10 wt % of inhibitor total weight at total weight ratio of said mixture of compounds of general formulae (1), (2) and, possibly, (1') to said fatty acids and/or polymers 1:0.02-0.5 to produce the product containing a mixture of compounds of formulae (7), (8) and, possibly, (7'), wherein, after the process is completed b) component a) selected from the group consisting of a) having pH value 6.5-7.5 and containing a product representing a mixture of compounds of said formulae (5), (6) and, possibly, (5'), and a product representing a mixture of compounds of formulae (7), (8) and, possibly, (7'), component B) representing oxyethylenated fatty amines containing from 14 to 22 atoms of C and 2-22 ethoxy groups per molecule in amount of 0.01-20 wt %, possibly, component c) which is aliphatic polyols in amount of 0.1-50 wt %. component d) representing aliphatic alcohols containing 1-6 atoms of C per molecule in amount of 15-99.6 wt % possibly with addition of water, as well as, possibly, component e) representing anti-foaming agent in amount of 0.01-2 wt % %. Method for producing said corrosion inhibitor comprises: I) preparation of component a) in reaction medium containing component d) which is aliphatic alcohols containing 1-6 atoms of C in amount of 15-90.6 wt %, possibly, with addition of water, comprising: A)-neutralizstion of I) produced mixture of modified derivatives of imidazoline of general formulae (1) and (2), wherein the mixture is the condensation product of DETA with fatty acids containing 12-22 atoms of C and aliphatic dicarboxylic acids containing 4-12 atoms of C, with molar ratio of DETA to fatty acids and aliphatic dicarboxylic acids 1:0.80-0.99:0.01-0.10, at a temperature of at least 140°C to produce a mixture of aminoamides of general formulae (3) and (4), after which the temperature is raised above 180°C and the condensation reaction is continued until a mixture of compounds of formulae (1) and (2) in amount of 0.1-50 wt % is produced, possibly, with addition of 0.05-20 wt % of ii) condensation product of DETA with fatty acids containing 12-24 atoms of C produced at temperature of 180-280°C of general formula (1'), with aliphatic and/or aromatic monocarboxylic acid containing 1-7 atoms of C in amount from 0.025 to 25 wt %, with weight ratio of the mixture of compounds of formulae (1), (2) and, possibly, (1') to said monocarboxylic acid 1:0.15-0.70 to produce the intermediate product containing a mixture of compounds of formulae (5), (6) and, possibly, (5') and a mixture of non-neutralised compounds (1), (2) and, possibly, (1'), and b) further neutralisation of produced intermediate product containing a mixture of compounds of general formulae (5), (6) and, possibly, (5') and a mixture of non-neutralised compounds of general formulae (1), (2) and, possibly, (1') by treatment with fatty acids containing 12-22 atoms of C in amount of 0.03-10 wt %, and/or polymers of fatty acids containing 18-54 atoms of C in amount of 0.03-10 wt % at weight ratio of total weight of mixture of compounds of formulae (1), (2) and, possibly, (1') to said fatty acids and/or polymers 1: 0.02-0.5 to produce a product containing a mixture of compounds of formulae (7), (8) and, possibly, (7'), the process b) is carried out until the reaction mixture reaches 6.5-7.5 pHand component a) is produced containing a product representing a mixture of compounds of formulae (5), (6) and, possibly, (5'), and a product a which is a mixture of compounds of formulae (7), (8) and, possibly, (7'); II) adding to component a) in amount of 0.155-85 wt % and to said component d) of additional inhibitor components, wt %: component b)-ethoxylated fatty amines containing 14-22 atoms of C and 2-20 ethoxy groups per molecule in amount of 0.01-20, possibly, component c) aliphatic polyols in amount of 0.1-50 and, finally, possibly, component e) defoamer in amount of 0.01-2. The invention is developed in dependent claims.EFFECT: increase of inhibition efficiency.9 cl, 1 tbl, 13 ex

ethod of processing filaments from silicon carbide // 2641045
FIELD: chemistry.SUBSTANCE: method includes the step of chemical processing the filaments with an aqueous acid solution containing hydrofluoric acid and nitric acid at a temperature of 10-30°C to remove the silicon dioxide that is present on the surface of the filaments and to form a layer of microporous carbon. This aqueous solution contains hydrofluoric acid in an amount of 0.5-4 mol/l and nitric acid in an amount of 0.5-5 mol/l, wherein the molar ratio of HF/HNO3 is less than 1.5. The invention also relates to a method of producing a fibrous preform comprising forming a fibrous structure comprising treated filaments of silicon carbide and applying the said blank to produce a part made of a composite material.EFFECT: improving the surface of the filaments for subsequent binding to pyrolytic carbon.12 cl, 2 dwg, 6 ex

ethod of local processing steel articles under ionic nitrogen in magnetic field // 2640703
FIELD: chemistry.SUBSTANCE: method of local ionic nitriding of the steel product includes performing vacuum heating of the steel product in a nitrogen plasma of increased density, the nitrogen plasma of increased density being formed in the toroidal region of the oscillating electrons moving along the cycloidal closed trajectories formed by the crossed electric and magnetic fields by means of a magnetic system made with liquid cooling and containing stationary magnets. The steel article is positioned to ensure the location of the area to be nitrided in a magnetic field in the high-density nitrogen plasma zone to intensify the diffusion saturation of this region and to form the nitriding zone in a magnetic field. The transition zone of nitriding is provided at a portion of the steel product remote from the magnetic system and located between a portion of the said article with a nitriding zone in a magnetic field, in which the effective thickness of the nitrided layer is 80 mcm and a portion of the said article with a nitriding zone outside the magnetic field, on which the effective thickness of the nitrided layer is 40 mcm.EFFECT: increasing the contact durability and wear resistance of the product surface due to its local processing.3 dwg, 1 ex
ethod of obtaining wear-resistant coating for cutting tool // 2640693
FIELD: metallurgy.SUBSTANCE: vacuum-plasma deposition of wear-resistant coating made of titanium nitride and niobium is carried out at their ratio, at %: titanium, 44.4; niobium, 55.6. Application of the coating is carried out by three cathodes arranged horizontally in one plane, the first and the second one are made of niobium and placed opposite to each other, and the third one is made of titanium and placed therebetween.EFFECT: increased working efficiency of the cutting tool.1 tbl
ethod of producing multi-layer coating for cutting tool // 2640691
FIELD: technological processes.SUBSTANCE: first, bottom layer of titanium nitride is applied. Further an intermediate layer of the nitride of the titanium and silicon compounds is applied at a ratio, wt %: titanium 97.9-98.5, silicon 1.5-2.1. Then, an upper layer of nitride of the titanium, silicon and niobium compound is applied at a ratio, wt %: titanium 88.6-93.0, silicon 1.0-1.4, niobium 6.0-10.0. The coating layers are applied horizontally in one plane by three cathodes, the first of which is made of a titanium and silicon alloy, the second one is made of a titanium and niobium composite and is placed opposite the first, and the third is made of titanium and is placed between them. The lower layer is applied using a third cathode, the intermediate layer is applied using first and third cathodes, and the upper layer is applied using all three cathodes.EFFECT: increased efficiency.1 tbl
ethod of producing multi-layer coating for cutting tool // 2640690
FIELD: metallurgy.SUBSTANCE: application of multi-layer coating is performed. First, a lower layer of titanium nitride is applied. Then, an intermediate layer of the titanium and aluminium nitride compound is applied at a ratio, wt %: titanium 83.5-89.5, aluminium 10.5-16.5. Then, the upper layer of the titanium, aluminium and zirconium nitride compound is applied at a ratio, wt %: titanium 73.0-81.0, aluminium 7.0-11.0, zirconium 12.0-16.0. Coating is applied by three cathodes arranged horizontally in one plane. The first cathode is made of titanium and aluminium alloy, the second cathode is made of titanium and opposed to the first cathode, while the third cathode is made of titanium and silicon alloy and arranged between the first and the second cathodes. The lower layer is applied using the third cathode, the intermediate layer - using the first and the third cathodes, and the top layer - using all three cathodes.EFFECT: increasing the efficiency of the cutting tool.1 tbl
ethod for forming nanocrystalline surface layer on details from aluminium alloys (versions) // 2640687
FIELD: nanotechnology.SUBSTANCE: amorphous surface layer is formed by bombarding it with ions of one of the following elements: Y, Yb, C, N. After that, the amorphized surface layer is crystallized by exposing the surface to ultrasonic vibrations with energy sufficient to provide the crystallization process, and the crystallization process is performed until necessary dimensions of nanocrystals are obtained. After that, the ultrasonic exposure is stopped and the material of the product is cooled at a rate ensuring the fixation of processes of the material transition from amorphous state to nanocrystalline one.EFFECT: improved operational properties of the details.6 cl, 3 ex

ethods using remote arc discharge plasma // 2640505
FIELD: electricity.SUBSTANCE: in the system, a coating application unit is located inside a vacuum chamber. The coating application unit includes a vapour source providing the material applied on a substrate, a substrate holder holding the substrate to be coated, so that they are located in front of the vapour source, the cathode chamber unit and the remote anode. The cathode chamber unit includes a cathode, an optional primary anode and a screen that isolates cathode from the vacuum chamber. The specified screen has holes for passing the electron emission current from the cathode to the vacuum chamber. The vapour source is located between the cathode and the remote anode, and the remote anode is connected to the cathode. The system includes the primary power source connected between the cathode and the primary anode, and the secondary power source connected between the cathode chamber unit and the remote anode. The method includes generation of the primary arc in the electron-emitting cathode source between the cathode target and the primary anode, generation of the remote arc held in the coating application zone between the cathode chamber unit and the anode, connected to the cathode target, and generation of metal vapour flow from the source of the metal vapours toward at least one substrate, intended for coating.EFFECT: resulting coatings have improved adhesion, smoothness, hyperfine microstructure, high density, low defect concentration and porosity and high functional characteristics.36 cl, 29 dwg

ethod for manufacturing kitchenware piece with internal surface of silver or silver alloy // 2640481
FIELD: food industry.SUBSTANCE: method for manufacturing a kitchenware piece includes shaping the kitchenware piece made of a ferrous metal, surface hardening, oxidation and polishing, while the inner surface of the kitchenware piece is coated with silver or a silver-based alloy by electroshaping.EFFECT: method ensures antibacterial and antiviral properties of dishes and increased thermal conductivity, allowing to cook food at a temperature below the splitting threshold of oils and fats, prevents food adhesion during cooking and facilitates its detachment from the surface of the items.13 cl, 6 ex, 2 dwg

eter-mixer // 2640369
FIELD: machine engineering.SUBSTANCE: meter-mixer contains a body, evaporators and heaters, that maintain a predetermined temperature for evaporation of the reactants, and two evaporators installed one above the other and closed through gaskets with covers with holes for supplying the carrier gas. The evaporators are made with spiral partitions forming spiral channels into which the reagent is loaded to saturate the carrier gas, coaxially installed nozzle inserts forming channels for feeding the saturated vapor-gas mixture through the nozzle channels to the reaction chamber and the buffer zone located between the two mentioned evaporators, the cavity which is sealed from the adjacent evaporation areas of the evaporators, to supply the vapor-gas mixture prepared outside the reactor into it, and with the possibility of supplying the vapor-gas mixture from it through the nozzle channel into the reaction chamber.EFFECT: ensuring the accuracy of regulation of the composition of compounds obtained as a result of interaction of reagents, the simplicity and compactness of the structure.1 dwg
Compositions containing ammonium hydroxo-zinc compounds // 2640237
FIELD: chemistry.SUBSTANCE: invention relates to ammonium compositions comprising, at least, one hydroxo-zinc compound and, at least, two compounds of the elements of the 3-rd main subgroup. The said composition can be used to make electronic components and to obtain a layer applied to a substrate followed by the thermal conversion.EFFECT: high electron mobility of electrons, favourable hysteresis and unlocking voltage.14 cl, 1 tbl, 3 ex

Laser plasmotron for deposition of composite diamond coatings // 2640114
FIELD: electricity.SUBSTANCE: plasmotron contains a continuous CO2-laser, input block for forming the working gas mixture Ar/CH4/H2, a focusing lens mounted in said block in the path of laser radiation, a gas nozzle, and a reaction chamber. The reaction chamber has a node for introducing nano-/microfunctional particles in the form of gas-dust jet. The mentioned node is installed with the ability to move along the surface of the reaction chamber in laser plasma flow and with the possibility of supplying a gas-dust jet across the aforementioned flow in the region of laser radiation focus or below mentioned focus area in the direction of flow of laser plasma. As a result of particles input node ability to move along the surface of the reaction chamber of plasmotron, it is possible to clean and activate the surface of particles, the partial ablation (evaporation) of particles with a decrease in their average size, full evaporation of particles up to atomic condition.EFFECT: improving the functional characteristics of conventional diamond coatings, forming a relatively thick coating, increasing their deposition rate.1 dwg

ethod of metal sheet processing to reduce its browning or tarnishing during storage and metal sheet processed by this method // 2640113
FIELD: metallurgy.SUBSTANCE: metal sheet comprises a steel substrate coated on at least one of its sides with a coating containing 0.1-20 wt % magnesium, optionally 0.1-20 wt % aluminium, the rest is zinc, possible impurities due to the process and, if necessary, one or more additional elements selected from Si, Sb, Pb, Ti, Ca, Mn, Sn, La, Ce, Cr, Ni, Zr and Bi. The weight content of each additional element is less than 0.3%. The coating also comprises a layer based on zinc hydroxychloride with the weight of the chlorine layer comprising at least 1 mg/m2. The layer contains no hydrozincite, mixed hydroxy carbonates of zinc, aluminium, water-soluble sodium or potassium compounds.EFFECT: creating coatings on steel substrate that provide protection against browning and tarnishing which remain effective even in the absence of temporary protective lubricant.16 cl, 3 dwg

Steel sheet with zinc coating // 2640111
FIELD: metallurgy.SUBSTANCE: steel sheet contains at least one layer of zinc. Said layer is applied by means of vapour-jet deposition at a sonic speed by means of ejection chamber. The ratio between the Pc pressure inside the coating chamber and Pe pressure inside the chamber for ejection of zinc is 2⋅10-3-5.5⋅10-2. According to the second version, the Pc pressure maintained within the chamber for the application of coating is 6⋅10-2-2⋅10-1 millibar.EFFECT: improved sheet properties.8 cl, 3 dwg, 2 tbl

Solution for forming insulating coating and sheet of textured electrotechnical steel // 2639905
FIELD: chemistry.SUBSTANCE: solution for forming coatings on a sheet of textured electrical steel contains an aqueous solution obtained by mixing the phosphate solution and colloidal silica, and colloidal silica is colloid or particles of silica surface-modified with aluminate or a solution of colloidal silica containing aluminate. The aqueous solution does not contain chromium. A sheet of textured electrical steel in accordance with the aspect of the present invention has excellent magnetic properties due to high tensile strength and excellent electric insulation, heat resistance, chemical stability and chemical safety, as a sheet of textured electrical steel has an insulating coating that is formed when using the solution to form a coating.EFFECT: improving the coating properties.7 cl, 9 dwg, 3 tbl
ethod for gas nitration of products of structural steels // 2639755
FIELD: metallurgy.SUBSTANCE: method for chemical-thermal treatment of products of structural steels includes heating in furnace in product reactor in nitrogen-containing atmosphere, isothermal holding in nitrogen-containing gas flow, and subsequent cooling with furnace. The heating is carried out in the reactor in the presence of a filler as a catalyst to create a layer of active particles around the products by means of nitrogen-containing gas flow. Simultaneously, the zinc impregnation process is performed using powdered zinc as a filler in a mixture with quartz sand and providing a layer of active particles consisting of nitrogen and zinc-containing substances around the products. In particular embodiments of the invention, heating, isotheric exposure and cooling of products is carried out in dissociated ammonia atmosphere. Isothermal holding is carried out in the temperature range of 750…850°C. Powdered zinc and quartz sand in the filler comprise a ratio of 1 to 10.EFFECT: increase of corrosion resistance while providing thicker reinforced layer and sufficient strength.4 cl, 5 dwg, 1 tbl
ethod for controling friction in friction pairs // 2639745
FIELD: electricity.SUBSTANCE: method for controlling friction in elements of friction pair includes pre-applying the coating from dichalcogenide of transition metal on the elements of the friction pair, and dichalcogenide of transition metal is applied on one element doped with impurity providing the n-type semiconductor, and dichalcogenide of transition metal doped with impurity providing the p-type semiconductor - on another one. The dopant is used in a concentration of 1 to 10 atoms of impurities on 107 molecules of dichalcogenide of transition metal, then constant current with variable potential difference is fed on the elements of the friction pair. A positive potential is fed to the element with a coating of dichalcogenide of transition metal doped with impurity providing the n-type semiconductor and a negative potential is fed to the element with a coating of dichalcogenide of transition metal doped with impurity providing the p-type semiconductor, wherein voltage is changed from 0 to the breakdown voltage of the formed elements of the friction pair of the p-n junction.EFFECT: increasing the effectiveness of friction control in friction pairs.10 cl, 1 ex
Solution for deleting deposits of different nature // 2639433
FIELD: chemistry.SUBSTANCE: solution for purifying the surface from the deposits of different nature, containing hydrogen peroxide, chelating agent, water-soluble calixarene and water in the following ratio, wt %: hydrogen peroxide 2-90, chelating agent 3-30, water-soluble calixarene 0.01-10, water - the rest, wherein it contains the chelating agent in the form of polybasic organic acids, their sodium salts or derivatives of phosphorous acids. Also, a concentrated component for preparing the said solution, a method for preparing a solution, and methods for purifying the surface from deposits of different nature are proposed.EFFECT: increasing the degree of purification from sediments of different nature with a simultaneous decrease in the aggressiveness of the solution to structural materials.19 cl, 2 tbl
ethod of producing multi-layer coating for cutting tool // 2639425
FIELD: technological processes.SUBSTANCE: first, bottom layer of titanium nitride is applied. Then, an intermediate layer of the nitride of the titanium and chromium compound is applied at a ratio, wt %: titanium 83.5-86.5, chromium 13.5-16.5. Then, the upper layer of the nitride of the titanium, chromium and niobium compound is applied at a ratio, wt %: titanium 79.0-85.0, chromium 9.0-11.0, niobium 6.0-10.0. The application of the coating layers is carried out horizontally in one plane by three cathodes, the first of which is made of a composite of titanium and chromium, the second of which is made of a composite of titanium and niobium and is placed opposite to the first, and the third is made of titanium and is placed between them, the lower layer is applied using the third cathode, an intermediate layer is applied using the first and the third cathodes, and an upper layer is applied using all three cathodes.EFFECT: obtaining a coating with high strength properties, which leads to an increased efficiency of the cutting tool.1 tbl
ethod for producing nickel-diamond coating // 2639411
FIELD: chemistry.SUBSTANCE: method includes preparing a metal surface, preparing a solution with ultra-dispersed diamonds, and depositing the coating. In the method, a water suspension of ultra-dispersed diamonds is used, which is previously subjected to ultrasonic dispersion for 30-60 min, and in the preparation of the solution in distilled water, nickel sulfate, sodium acetate and acetic acid are dissolved, the solution is heated to a temperature of 87-90°C. The water suspension of ultra-dispersed diamonds is introduced into the resulting solution in the amount of 1-5 g/l, the ultrasonic dispersion of the solution is performed for 5 min, then sodium hipofosfit and thiourea are introduced, the ultrasonic dispersion of the solution is performed for 5 min. Then from the resulting solution containing, g/l: nickel sulfate - 20-30, sodium gipofosfit 10-25, sodium acetate - 10-15, acetic acid - 4-6 ml/l, thiourea - 0.001-0.003, ultra-fine diamonds - 1-5, at pH of 4.3-4.8 the coating is chemically precipitated on the prepared metal surface at a temperature of 87-90°C and a deposition rate of 0.15-0.2 mcm/min until the required thickness of the coating is obtained.EFFECT: simplification of the technology of chemical nickel coating with ultra-dispersed diamonds by eliminating additional operations to maintain a certain size of ultra-dispersed diamond particles during the deposition of the coating, the possibility to obtain coatings with defined composition and properties.1 tbl, 3 ex

ethod for overall surfacing of metal part for turbo-jet engines of aircrafts and general protective equipment for method implementation // 2639197
FIELD: engines and pumps.SUBSTANCE: laser beam emitting nozzle (211) is used for surfacing. Method comprises the following steps: placing a metal part (202) to be surfaced on a rotating plate (201); positioning lid (205) on the rotating plate (201), positioning nozzle (211) at the level of an opening (206) provided in the lid (205); introducing inert gas under the lid (205); surfacing the first portion (203) of the plurality of metal pieces of the metal part (202). Laser surfacing of metal powder onto said first metal part (203) is carried out by moving the nozzle (211) relatively to said first metal part (203).EFFECT: method improvement.13 cl, 3 dwg
ethod of producing multi-layer coating for cutting tool // 2639192
FIELD: technological processes.SUBSTANCE: applying a multilayer coating is carried out. First, a lower layer of titanium nitride and chromium is applied at the ratio, wt %: titanium 82.75-87.25, chromium 12.75-17.25. Then, an intermediate layer of nitride of a titanium, chromium and silicon compound is applied at the ratio, wt %: titanium 87.1-90.5, chromium 8.5-11.5, silicon 1.0-1.4. Then, a top layer of titanium nitride is applied. The application of the coating layers is carried out by three cathodes arranged horizontally in one plane, the first of which is made composite of titanium and chromium, the second one is made of a titanium and silicon alloy and arranged opposite the first one, and the third one is made of titanium and arranged between them, the lower layer being applied using the first cathode and the third cathode, the intermediate layer - using all three cathodes, and the upper layer - using the third cathode.EFFECT: increasing the cutting tool efficiency.1 tbl
ethod of producing multi-layer coating for cutting tool // 2639189
FIELD: technological processes.SUBSTANCE: applying a multilayer coating is carried out. First, a lower layer of titanium nitride and aluminium is applied at the ratio, wt %: titanium 83.5-89.5, aluminium 10.5-16.5. Then an intermediate layer of nitride of a titanium, aluminium and zirconium compound is applied at the ratio, wt %: titanium 73.0-81.0, aluminium 7.0-11.0, zirconium 12.0-16.0. Then, a top layer of titanium nitride is applied. The application of the coating layers is carried out by three cathodes arranged horizontally in one plane, the first of which is made of a titanium and aluminium alloy, the second one is made of a titanium and zirconium alloy and arranged opposite the first one, and the third one is made of titanium and arranged between them, the lower layer being applied using the first cathode and the third cathode, the intermediate layer - using all three cathodes, and the upper layer - using the third cathode.EFFECT: increasing the cutting tool efficiency.1 tbl

ethod for galvanized steel sheet production // 2639188
FIELD: metallurgy.SUBSTANCE: method includes stage of an oxide layer formation, which consists in bringing the galvanized steel sheet into contact with an acid solution for 1 to 60 seconds, and in subsequent washing of galvanized steel sheet with water, and stage of neutralisation treatment, which consists in bringing of the surface of the oxide layer formed in the stage of oxide layer formation in contact with an aqueous alkaline solution for 0.5 seconds or more, in washing the surface of the oxide layer with water and drying the surface of the oxide layer, at that the aqueous alkaline solution contains 0.01 g/l or more of P ions and 0.01 g/l or more of colloidal-dispersed particles. The aqueous alkaline solution preferably contains at least one phosphorus compound selected from phosphates, pyrophosphates and triphosphates, and at least one type of colloidal-dispersed particles, selected from Ti, silicon dioxide, Pt, Pd, Zr, Ag, Cu, Au and Mg.EFFECT: invention enables production of sheet having good degreasing property, low resistance to sliding during pressing under stressed conditions of alkaline degreasing treatment.37 cl, 3 dwg, 6 tbl
Sheet of textured electrotechnical steel with excellent magnetic properties and adhesion of coating // 2639178
FIELD: metallurgy.SUBSTANCE: sheet of textured electrical steel with insulating coating creating tension on the sheet surface, which consists of a coating layer A formed on the surface of steel sheet and composed of oxide, and coating layer B, formed on the top surface and made of glass, at that the ratio R (σB/σA) of tension σB of layer coating B on the top surface, that is created on a steel sheet in the direction of rolling, to tension σA of layer coating A generated on surface of the steel sheet in the direction of rolling, is in the range 1.20-4.0.EFFECT: production of sheet from textured electrotechnical steel with stable high magnetic properties and good adhesion of the coating.8 cl, 2 tbl, 2 ex
ethod for producing indium oxide-containing coatings // 2639169
FIELD: chemistry.SUBSTANCE: method for liquid-phase producting the indium oxide-containing coatings comprises applying a composition to a substrate, comprising, at least, one indium oxoalkoxide of general formula MxOy(OR)z[O(R'O)eH]aXbYc[R"OH]d), in which x is a number from 3 to 25, y is a number from 1 to 10, z is a number from 3 to 50, a is a number from 0 to 25, b is a number from 0 to 20, c is a number from 1 to 20, d is a number from 0 to 25, e is a number of 0 or 1, M R, R', R", respectively, are an organic residue, X is fluoro, chloro, bromo, or iodo, and Y is -NO3, -NO2, provided that the sum b+ c is a number from 1 to 20, and, at least, one solvent. Indium oxoalkoxides of general formula are also provided, containing their coating compositions obtained by the coating process according to the invention and their use.EFFECT: invention allows to obtain indium oxide-containing coatings having a uniform and reproducible stoichiometric composition, high uniformity, optimum electrical performance, and high stability with respect to atmospheric influences and electrostatic stress.15 cl, 2 ex, 2 dwg

Coated aluminium strip and method of its production // 2639166
FIELD: metallurgy.SUBSTANCE: degreasing and anodizing the strip surface by immersing thereof in a bath with acid electrolyte and AC application to form oxide layer on the strip surface is carried out. Passivation layer is applied on the strip surface by coating rolled product without washing.EFFECT: improved corrosion resistance of the strip.15 cl, 8 dwg
ethod of producing multi-layer coating for cutting tool // 2638875
FIELD: technological processes.SUBSTANCE: ion-plasma application of the multilayer coating is carried out. First, a lower layer of titanium nitride and silicon is applied at the ratio, wt %: titanium 98.0-98.4, silicon 1.6-2.0. Then, an intermediate layer of nitride of a titanium, silicon and aluminium compound is applied at the ratio, wt %: titanium 87.7-91.9, silicon 1.1-1.3, aluminium 7.0-11.0. Then, a top layer of titanium nitride is applied. The application of the coating layers is carried out by three cathodes arranged horizontally in one plane, the first of which is made of a titanium and silicon alloy, the second one is made of a titanium and aluminium alloy and arranged opposite the first one, and the third one is made of titanium and arranged between them, the lower layer being applied using the first cathode and the third cathode, the intermediate layer - using all three cathodes, and the upper layer - using the third cathode.EFFECT: increasing the cutting tool efficiency.1 tbl
ethod of producing multi-layer coating for cutting tool // 2638874
FIELD: technological processes.SUBSTANCE: applying a multilayer coating is carried out. First, a lower layer of titanium nitride and chromium is applied at the ratio, wt %: titanium 83.5-86.5, chromium 13.5-16.5. Then an intermediate layer of nitride of a titanium, chromium and molybdenum compound is applied at the ratio, wt %: titanium 83.5-87.0, chromium 9.0-11.0, molybdenum 4.0-5.5. Then, a top layer of titanium nitride is applied. The application of the coating layers is carried out by three cathodes arranged horizontally in one plane, the first of which is made composite of titanium and chromium, the second one is made composite of titanium and molybdenum and arranged opposite the first one, and the third one is made of titanium and arranged between them, the lower layer being applied using the first cathode and the third cathode, the intermediate layer - using all three cathodes, and the upper layer - using the third cathode.EFFECT: increasing the cutting tool efficiency.1 tbl

ethod for manufacturing rotor of electrostatic gyroscope and device for implementation of this method // 2638870
FIELD: machine engineering.SUBSTANCE: process for manufacturing the rotor includes forming a spherical rotor blank, balancing it, and applying a thin-film wear-resistant coating of varying thickness. An outer spherical surface of the coating is formed with a center displaced relative to the geometric center of the rotor blank by the calculated value δ in the direction opposite to the direction of the rotor imbalance vector . For this purpose, during spraying a cyclic reciprocating motion of the rotor is performed along the axis of spayed material flow with preset amplitude Δmiddle position. Value ΔL is selected depending on the required displacementδ. The cycle of said movement is synchronized with rotation of the rotor, and the rotor is oriented by the imbalance vector to a certain side relative to the source of sprayed material. The rotation drive is connected to the rotor fastening elements by means of a single-track shaft, in which the crankpin has eccentricity ΔL relative to the axis of rotor rotation. Said crankpin and the stop rigidly fixed on the chamber base are connected to the connecting rod ends by means of hinges. The rotation drive is mounted on guides which determine possibility of its reciprocation along the axis of sprayed material flow. In this case, the distance between the axes of hinge is varied, and the crankpin is mounted for changing the eccentricity ΔL relative to the axis of rotor rotation.EFFECT: improvement and stability of electrostatic gyroscope rotor manufacturing due to correction of imbalance, while maintaining geometric parameters of the sphere.2 cl, 4 dwg
ethod of producing protective oxide film on metallic surface // 2638869
FIELD: chemistry.SUBSTANCE: method of producing a protective oxide film on a metal surface includes the preparation of a matrix made of an iron powder by mixing the iron powder with water in a ratio of 85:15 by weight to give a heterophasic wetted mechanical mixture, compaction of the mixture at a pressing pressure of 1.4…1.6 GPa due to localized shear strains with achievement of residual porosity 1…3% and passivation of the matrix with providing a protective oxide film.EFFECT: increased corrosion resistance of the matrix material of the product base.1 ex
Inhibiting composition // 2638861
FIELD: chemistry.SUBSTANCE: inhibiting composition contains components with the following ratio, pts wt: polysulfide oligomer (55-65), diane epoxy resin (4-7), phenol-formaldehyde resin (4-6), at least one inorganic filler (25-34), inorganic corrosion inhibitor (6.2-11), antiseptic additive (0.01-0.05), organic solvent (50-200).EFFECT: increasing the anticorrosive properties of the composition due to a combination of high adhesion to the substrate with the mushroom resistance, physico-mechanical strength and long-term protective capacity, viscosity and layer thickness.2 tbl, 7 ex
ethod of producing multi-layer coating for cutting tool // 2638714
FIELD: technological processes.SUBSTANCE: first, bottom layer of titanium nitride is applied. Then, an intermediate layer of nitride of the titanium and aluminium compound is applied at a ratio, wt %: titanium 70.0-79.0, aluminium 21.0-30.0. Then, the upper layer of the nitride of the titanium, aluminium and niobium compound is applied at a ratio, wt %: titanium 70.0-80.0, aluminium 14.0-20.0, niobium 6.0-10.0. The application of the coating layers is carried out horizontally in one plane by three cathodes, the first of which is made of a titanium and aluminium alloy, the second of which is made of titanium and niobium and is placed opposite to the first, and the third is made of titanium and is placed between them, the lower layer is applied using the third cathode, an intermediate layer is applied using the first and the third cathodes, and an upper layer is applied using all three cathodes.EFFECT: higher cutting tool efficiency.1 tbl
Device for laser-plasma synthesis of high-solid micro- and nanostructured coatings // 2638610
FIELD: chemistry.SUBSTANCE: device comprises a pulse-periodic laser, a reaction chamber with a means for positioning the object to be processed with a control processor and an inlet for the working gas flow, a source of working gas, a means for forming a working gas flow in the reaction chamber, a means for delivering laser radiation to the reaction chamber and focusing the beam, heating the reaction zone while cooling the periphery of the reaction zone. The reaction chamber has an inlet for the working gas flow and an input for laser radiation. It comprises a local heating device comprising a fan with a heater installed in the nozzle or a gas burner or plasmatron forming a directional jet, at the periphery of which a liquid or sprayed cooling agent is supplied. The nozzle consists of an outer and inner annular nozzle.EFFECT: invention allows to expand the technological capabilities by providing a synthesis of wear-resistant, impact resistant, chemical and corrosion resistant coatings, and to improve the coating quality by reducing the intensity of residual laser radiation.2 cl, 1 dwg
Protective screen for electrode of plasma-chemical deposition reactor // 2638609
FIELD: electricity.SUBSTANCE: protective screen for electrode of plasma-chemical deposition reactor, which is made of metal, is 10 to 1000 micrometres thick with overall dimensions corresponding to the dimensions of the electrode of plasma-chemical reactor and having holes in the locations of the holes on the electrode of plasma-chemical deposition reactor. In particular embodiment of the invention, the said screen comprises an additional protective coating made of silicon nitride or silicon carbide or aluminium oxide, or nickel-plated to increase wear resistance or to enhance chemical resistance. The screen can be made from a solid metal sheet or from individual metal composite elements.EFFECT: reduction of electrode wear of the plasma-chemical deposition reactor.5 cl, 2 dwg, 1 ex

ethod of coating metal formes from al-mg and al-si alloys for manufacturing automobile tires // 2638482
FIELD: transportation.SUBSTANCE: in the method, the form is degreased and etched in a bath with a pH from 11.0 to 12.5 at a temperature of 50 to 70°C for 1-2 minutes, washed in demineralized water at a temperature from 20 to 30°C, then it is immersed in a bath with a liquid zirconium passivating thing with a pH from 4.8 to 5.2 at a temperature of 25 to 30°C for 2-3 minutes, then again washed in demineralized water at a temperature from 20 to 30°C, dried at a temperature from 110 to115°C for 20-25 minutes. Next, a final coating is formed in the bath with an aqueous dispersion of polytetrafluoroethylene with a pH from 7.5 to 8.5 at a temperature from 60 to 65°C for 15-16 minutes, the coating is baked at a temperature from 100 to 105°C for 30-40 minutes.EFFECT: increased number of cycles of tire manufacturing without the need to clean the working surface of the mentioned form for tire manufacturing.4 cl, 3 dwg
Composite coating based on nickel with ultra-dispersed diamonds // 2638480
FIELD: chemistry.SUBSTANCE: invention is a nickel-based composite coating containing ultra-dispersed diamonds that can be formed on various metal parts operating under conditions of increased wear and in the presence of corrosive media. A composite chemically deposited nickel-based coating with ultra-dispersed diamonds contains nickel, phosphorus, and ultra-dispersed diamonds with particle sizes from 100 to 500 nm with the following component ratio, wt %: phosphorus 3-6, particles of ultra-dispersed diamonds 0.4-0.8, nickel - the rest.EFFECT: ability to subject it to various technological operations without the risk of its damage due to high plasticity and while maintaining its high corrosion and wear resistance.3 tbl, 3 ex
 
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