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Method for preparing nanodiamonds with methane pyrolysis in electric field Invention may be used in medicine in producing preparations for a postoperative supporting therapy. What is involved is the high-temperature decomposition of methane on silicone or nickel substrate under pressure of 10-30 tor and a temperature of 1050-1150°C. The heating is conducted by passing the electric current through a carbon foil, cloth, felt or a structural graphite plate whereon the substrates are arranged. An analogous plate whereon a displacement potential from an external source is sent is placed above the specified plate. Nanodiamonds of 4 nm to 10 nm in size are deposited on the substrates. |
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Method to increase adhesion factor of two rotating parts of rotor rigidly coupled with each other Invention relates to the method of increasing the adhesion factor of two rotating parts of rotor which are rigidly connected to each other. The method involves stages implying milling of at least one base surface in order to change the state and increase the roughness, further coating of one or each of milled surfaces by a thin layer (44) of hard material distinguished for its increased friction factor. The thickness of the thin layer is chosen so that it is so small that the state of the surface obtained in the course of milling is not changed. |
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Device for diffusion metallisation in medium of fusible liquid-metal solutions Proposed device is intended for application of diffusion coatings on articles in the medium of fusible liquid-metal solutions with heat treatment of the material and can be used in machine building, etc. This device comprises heating chamber. Said chamber accommodates moving screen, vacuum line with shutoff valve, inert gas feed line with shutoff valve and transfer chamber. It accommodates the tight gate with drive, moving rod with articles being coated secured thereat, lateral surface of said chamber being furnished with loading hatch. Vacuum line with shutoff valve is arranged at gate chamber and connected via pipeline inert gas circulation system including heat exchanger and blower with inert gas feed line with shutoff valve arranged at gate chamber upper part. Heating chamber is composed of a hollow bottomless cylinder. Chamber lower part is arranged inside ceramic or graphite crucible below the level of fusible liquid-metal solution of sealing of heating chamber interior. Protective antioxidant ply is arranged on the surface of fusible liquid-metal solution on chamber outer side. Said crucible is arranged in heat insulating case accommodating the heaters. Salt melt containing 100% of BaCl2 salt is used as said protective antioxidant ply. |
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Device for protecting inspection window of vacuum chamber Device for protecting the inspection window of a vacuum chamber has a belt stretched along the window by driving and driven rollers. A thin elastic metal belt is made wider and 2.5 times longer than the window. The belt is laid and fastened in the groove of each roller. A rectangular frame with removable glass whose width is three times shorter than its length is inserted into the belt on its width. Grooves are made on the edges of each roller, with two cables not shorter than the length of the window and made in form of a spring being fastened in said grooves and stretched between the rollers below the belt. A support for the frame is placed near each roller. When the frame rests on the support near the driven roller, the cables are wound on the driving roller and the belt is wound on the driven roller. When the frame rests on the support near the driving roller, the cables are wound on the driven roller and the belt is wound on the driving roller. At least two guides are mounted on each side of the belt. |
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Removal of oil from oiled iron/steel chips and scale of rolling process slimes Invention relates to removal oil from oiled iron/steel chips and scale of rolling process slimes. In compliance with proposed process, oiled scale of rolling process slimes, oiled iron/steel chips sized to not over 15 mm and clean process water are mixed at the ratio of 2:1:6. Then, they are processed in reactor with magnetic field of 50 Hz frequency and intensity varying from 200 A/m to 1100 A/m to produce clean scale and chips. |
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Composition and method of control of copper loss and erosion of copper alloys in industrial systems Invention relates to a method of reducing erosion and/or corrosion resulting from an impact of aggressive waters in industrial systems, namely for reduction of loss of copper ions from water systems, containing a copper-containing surface, which is in contact with water of the said water system. The composition contains a synergic combination of at least two different benzotriazoles or their salts, and the said synergic composition provides a corrosion-resistant barrier on the copper-containing surface. |
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Sliding element with exposed functional surface Set of inventions relates to ICE sliding parts. Proposed part comprises substrate with coating thermally deposited thereon and exposed contact surface including at least two different-strength two-phase-material coating. Note here that at least one of coating phases of lower strength is recessed relative to the other coating phase. Making of the part includes preparation of substrate, thermal deposition of coating with exposed contact surface to recess at least one of material phases relative to the other phase. Note also that lower-strength coating material is recessed. |
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Steel part inductive hard-facing Prior to inductive hard-facing of the charge, the part is subjected to preliminary hardening to the depth of 0.3-0.6 mm. Used charge consists of the mix of 20-30% of boron carbide and 70-80% of flux. Said mix in depth of 0.8-1.4 mm is applied on the part. Said charge is fused by high-frequency current and cured at, at least, 1240°C for 50-70 s. |
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Sliding element, namely, piston ring with coating Invention relates to sliding element, particularly, to piston ring with coating on at least one sliding surface which in the direction from inside to outside consists of an adhesive layer (10), a metal-containing (preferably tungsten-containing) DLC-layer (12) and a DLC-layer containing no metal (14). The relation of the width of the DLC-layer containing no metal to the width of metal-containing DLC-layer is from 0.7 to 1.5 and/or the relation to the total coating width is from 0.4 to 0.6, while the total coating width amounts to from 5 mcm to 40 mcm. |
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Invention relates to metallurgy, particularly to production of hot-stamped part that feature high corrosion resistance. Two plies are successively applied on steel substrate surface: plating ply I containing 60 wt % and more of Ni, Zn and unavoidable impurities making the rest. Note here that coating mass varies from 0.01 to 5 g/m2; and plating ply II, containing 10 to 25 wt % of Ni, Zn and unavoidable impurities making the rest. Note coating mass varies from 10 to 90 g/m2. |
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Cleaning of outer surface of aluminium or aluminium alloys of air cooling hardware Invention relates to cleaning outer aluminium surfaces of air cooling hardware. Proposed method comprises processing of surface with detergent and flushing with water. Note here that cleaning is conducted in three steps. At first and third steps, surface is flushed with heated water or the mix of water with steam at jet pressure of 20-150 bar. At second step, surface is flushed with 0.25-1.5% water solution of acidic detergent heated to 20-60°C at jet pressure of 20-150 bar and duration of 10-30 minutes. Used detergent comprises the following substances at the following ratio of components in wt %: orthophosphoric acid - 20.0-25.0, nitric acid - 8.0-15.0, oxyethylidenediphosphorus acid - 2.0-4.5, non-ionic surfactant - 0.05-0.11, water making up to 100. At first and third steps, surface is flushed with water heated to 20-100°C or with mix of water with steam heated to 100-155°C. |
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Semiconductor growing method and semiconductor device Group of inventions is related to semiconductor materials. A method (version 1) includes provision of a reaction chamber, a semiconductor substrate, a precursor gas or precursor gases, epitaxial CVD growing of a doped semiconductor material at the substrate in the reaction chamber in order to form the first layer, blowing of the reaction chamber with a gas mixture including hydrogen and halogen-containing gas with reduction of dopant memory effect without removal of the respective precipitated layer from the reaction zone and epitaxial CVD growing of the doped semiconductor material at the above substrate in the reaction chamber in order to form the second layer. The semiconductor device contains the semiconductor material received by the above method. The method (version 2) includes introduction of a new semiconductor substrate in the above reaction chamber after the above blowing process and epitaxial CVD growing of the doped semiconductor material at the above new semiconductor substrate. |
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Carbon-carbon composite material Invention relates to composite materials, particularly carbon-carbon composite material, and can be used in making liquid-propellant engines. The carbon-carbon composite material with a protective silicon carbide coating has a sealing layer. The protective coating is coated with a sealing layer of nickel, niobium or molybdenum metal. |
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Sliding element, particularly, coated piston ring, and method of its fabrication Invention relates to sliding element, particularly, to piston ring with coating on at least one sliding surface and to method of making of said sliding element. Said sliding element, particularly ICE piston ring has the coating on at least one sliding surface in direction from inward to outward. Said coating comprises metal-bearing adhesion ply and that of diamond-like DLC carbon ta-C type at least 10 mcm in depth. Tetrahedral carbon ta-C ply contains sp3-ibridised carbon atoms in amount of at least 40 at. % and hydrogen in amount of at least 0.5 at. %. Note here that the content of sp3-ibridised carbon atoms in outer 1-3 mcm plies is decreased. |
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Method of producing thin-film polymer nanocomposites for superdense magnetic information recording Method of producing polymer nanocomposites in form of thin films for superdense information recording involves producing a precursor consisting of polyvinyl alcohol, water and a mixture of water-soluble salts of ferric and ferrous iron, followed by treatment with at least one water-soluble dialdehyde at pH 0-3 in the presence of an acid as an acidifying agent, obtaining a thin film on a dielectric nonmagnetic substrate depositing the precursor on a substrate rotating on a centrifuge to form a gel film, treating the obtained gel film with an alkali, the alkali being added in an amount allows complete alkaline hydrolysis of the mixture of iron salts to form a mixture of magnetite or maghemite. The obtained gel film is treated with the alkali in ammonia vapour which is formed from aqueous ammonia solution (NH4OH) or hydrazine hydrate (N2H4·H2O) for 5.0-15.0 hours. |
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Invention relates to machine building and may be used in aircraft and power engineering. Plies of chromium and aluminium are deposited and subjected to high temperature annealing in vacuum at 1050±5°C, residual pressure of 1.3(10-1-10-3) Pa for 2-5 hours. Chromium ply deposition from gas phase is executed at thermal decomposition of Cr(CO)6, while that of aluminium ply is performed at thermal decomposition of Al(CH3)3. Note here that at chromium decomposition Cr(CO)6 is heated to 110-120°C to set 400-450°C in deposition area while chromium ply is formed during at least 2-3 hours. At aluminium deposition Al(CH3)3 is heated to 100-110°C to set 300-350°C in deposition zone while aluminium ply is formed at least 5-6 hours. Proposed device comprises reaction chamber arranged inside vacuum chamber and separated by heat-insulating dense-vacuum web to preliminary zone and deposition zone that feature different temperature fields. Heated containers to accommodate coating material sources are arranged outside vacuum chamber and connected via heated transfer systems and heated valves with inlet into reaction chamber preliminary zone. Temperature field is created by heating system with the help of temperature field formation shields arranged in reaction chamber deposition zone. |
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Adjustment of penetration of butts between retort parts in siliconising tool set Fusible gate is formed between retort parts of siliconising plant at butts on the side of its outer surface. Said fusible gate is formed in end recess while fusible gate material is composed by Si3N4-Si or Ti3SiC5-Ti Si2-Si, or TiSi2-Si.Said materials are produced by impregnating them or Si3N4-or mix of TiC and Ti, or Ti-based porous blanks formed at circular recess bottom to overlap the butt with the melt of silicon melt or its alloys with Cu and Al. |
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Method of processing substrates for coating application by vapour deposition Invention relates to surface processing at de-airing plant with first target-like electrode that makes the part of evaporation source by electric arc and second electrode that doubles as a holder. Arc discharge is fed via first electrode with arc discharge pulse current to evaporate the material from said target to be deposited intermittently on blanks. Second electrode and blanks make the bias electrode. Power supply feeds the bias voltage to bias electrode. Note here that bias voltage is fed in compliance with arc discharge current to ensure ion bombardment of substrate surface at equilibrium state between surface layer formation and its removal. |
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Method of producing corrosion inhibitor Method involves mixing a reaction product of oxyethylidenediphosphonic acid and ascorbic acid and/or gluconic acid with tripolyphosphates of alkali metals and a reaction product of orthophosphoric acid with an alkali metal hydroxide with the weight ratio of the reaction product of oxyethylidenediphosphonic acid and ascorbic acid and/or gluconic acid with tripolyphosphates of alkali metals and the reaction product of orthophosphoric acid with an alkali metal hydroxide of 1:1-3, respectively. |
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Steel sheet processing universal line for production of various high-strength steels Invention relates to metal forming. Proposed line comprises unwinding and flushing station, heating station, holding station and delayed cooling station. Hydrogen cooling station and water quenching station are located downstream thereof and in parallel therewith. Note here that downstream of hydrogen cooling station located are reheating station, overageing station, final cooling station, straightening station, finishing station, lubrication station and winding station. Downstream of water quenching station located are acid flushing station and galvanic station. Note also that hot zinc-plating station is arranged downstream of reheating station and connected therewith. Note also that galvanil-plating station is arranged downstream of hot zinc-plating station and connected therewith. Mind that acid flushing station and galvanic stations are separately connected with reheating station via connection channels. Said galvanic station is directly connected via connection channel with unwinding station and flushing station. Water quenching station is connected with delayed cooling station via fixed bypass channel. Reheating station is connected with overageing station via plug-in bypass channel. |
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Method of cyclic gas nitration of steel dies for hot forming Invention relates to metallurgy, particularly, to chemical-thermal processing, in particular to cyclic gas nitration of alloys steels with application of nanotechnologies, and can be used for production steel dies for hot forming to be used at high temperatures. Heating is performed in the temperature range of T=550-590°C. Then, alternate feed of air and ammonia at air feed interval larger than that of ammonia in a cycle and with formation of water steam. Oxide films are produced at die surfaces and have electric charge to allow formation of the structure that consists of iron nitride nanoparticle ply and monolith play of cermet as oxycarbonitride. Then, curing is performed follows by cooling together with furnace. In particular cases, cycle interval makes 50 s at furnace volume making 0.5 l. |
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Method and tool for surface forming to preset roughness Proposed method comprises producing groove finish of preset geometry on substrate surface pre-machined to required size, grooves being subjected to stepwise machining to small depth and width. Note here that groove cross-section is machined to final size in stepwise manner. To prepare substrate surface for thermal spraying, grooved structure in substrate surface is produced by cutting base groove in substrate surface to bottom width smaller than that of finished groove. Then, it is machined to groove cross-section with undercut with removal of chips or cutting. Proposed tool comprises bearing element with one rectangular plate secured thereto for forming and cutting. Plate lateral edge directed parallel with the substrate machined surface comprises at least three tooth comb-arranged one after the other. |
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Invention relates to ICE sliding element, particularly, to piston ring. Proposed sliding element has coating that represents ta-C-type diamond-like coat with internal strains varying over its depth, hence, with at least one internal strain gradient. Coating area (IV) facing the base material bulges inward with negative gradient of internal strain and outside coating area (II) features positive gradient of internal strain while mid area (III) features alternating areas of high and low internal strain. |
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Invention relates to metallurgy, particularly to steel sheet with zinc-based alloy coat wherein parent material represents a low-carbon steel. Said steel features the following chemical composition, in wt %: C: 0.010-0.10, Si: not over 1.50, Mn: not over 2.00, P: not over 0.10, S: not over 0.030, N: not over 0.0050, Ti: not over 0.050 and B: 0.0003-0.010, Fe and unavoidable impurities making the rest. It features the magnitude of index L describing the interrelation between titanium content and nitrogen content with content of free boron and calculated by formula L={(Ti/48)+(B/11)}/(N/14) making at least 5.50. Sheet features metallographic structure containing ferrite: 10-99 wt %, bainite, perlite, cementite or martensite making the rest. |
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Cutting tool coating composed by cutting edge and cutting tool including such coating Invention relates to cutting tool with coating on cutting edge. Coating on cutting tool is composed by cutting edge. Note here that this coating is applied on rear surface (6b) of primary element (6) of edge (5) composed by the area nearby blade cutting edge (2). Note here that said coating features higher hardness than that of the primary element (6). Said coating is applied by electric discharge between said rear surface (6b) and discharge electrode for deposition of electrode material or its reacted substances produced by discharge energy on rear surface (6b). Discharge electrode is made by forming of metal powder, powder of metal compound, powder of ceramic material or the mix thereof. Cutting edge composed by said coating extends outward from the primary element edge (6) represents s transverse rib line between front surface (6a) and rear surface (6b) to distal end side of cutting edge (2). Cutting edge angle makes 10 through 20 degrees. |
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Nano- and microstructured ceramic thermal barrier coating Invention relates to ceramic thermal barrier coating, which has nanostructured and microstructured layer. Ceramic thermal barrier coating on substrate from heat-resistant alloy based on nickel or cobalt, or iron, contains optionally substituted metal binding coating (7) and two layered ceramic layers (16) with internal ceramic (10) and external ceramic (13) layer. Internal ceramic layer (10) is nanostructured and has porosity between 3 vol% and 14 vol%, in particular between 9 vol% and 14 vol%, and external layer (13) has porosity higher than porosity of internal layer (10), in particular at least by 10% higher, most preferably at least by 20% higher. Material for two ceramic layers (10, 13) is similar, in particular stabilised zirconium dioxide, most preferably zirconium dioxide, stabilised with yttrium oxide. |
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Atomic layer deposition apparatus and method of loading atomic layer deposition apparatus Invention relates to an atomic layer deposition apparatus and a method of loading said apparatus. The apparatus comprises ALD reactors, each configured to receive a batch of substrates for ALD treatment and includes a reaction chamber with top loading, a system of covers, a hoisting device for hoisting the system of covers for loading the reaction chamber and a loading robot. The loading robot has a gripping part and a movement device, wherein the loading robot is configured to perform multiple loading operations for loading each of the ALD reactors. Each loading operation includes gripping the gripping part in a zone or on a storage shelf of a substrate holder in the batch of substrates, the movement device moving the substrate holder with the batch of substrates into the reaction chamber of the corresponding ALD reactor and lowering said substrate holder vertically from the top into the corresponding reaction chamber. |
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Case-hardened steel element and method of its production Invention relates to case-hardened steel element, to method of its production and case-hardening steel. Steel-hardened steel element is produced at special stages of case-hardening, cooling and quenching. Steel element contains the following components in wt %: C: 0.1-0.40; Si: 0.35-3.0; Mn: 0.1-3; P: 0.03 or less; S: 0.15 or less; Al: 0.05 or less; N: 0.03 or less; Cr: less than 0.2 and Mo: 0.1 or less; Fe and unavoidable impurities making the rest. Its surface layer has first ply with carbon concentration of 0.60-0.85 wt % and martensite structure wherein no oxide layer caused by Si presence exists at grains interface. Second ply has carbon concentration of 0.1-0.4 wt % and martensite structure. Third ply has carbon concentration of 0.1-0.4 wt % and has no martensite structure. |
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Method of obtaining acid corrosion inhibitor Method of obtaining acid corrosion inhibitor based on cyclic aminoamides includes interaction of individual amines and/or polyamines with polyethylene terephthalate and chloroparaffin with weight ratio of initial reagents 0.4÷2.5:1:0.5÷2.5 respectively at temperature 110-125°C for 2.0-4.5 h with further introduction of urotropine in amount (0.07÷0.37) mol and hydrochloric acid into products of synthesis at temperature 50-60°C with further mixing. |
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Invention relates to ICE sliding element, particularly, to piston ring. Sliding element has ta-C-type DLC coating with at least one gradient of internal strain. Note here that coating mid area (II) I inward direction has negative gradient of internal strain, preferably, smaller than that in inside area (III). Coating area (III) features smaller depth of layer than that of mid area (II). Note here that this coating features depth of 10 mcm or larger. |
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Compensating compositions and method of replenishing composition for preliminary processing Invention relates to methods of correcting solutions for preliminary processing of metal substrates before superficial chemical processing. method includes addition to composition for preliminary processing of compensation composition with components, different from components of composition for preliminary processing, in which compensating composition includes: (a) dissolved fluoride complex of metal ion, in which metal ion includes metal of IIIA group, metal of IVA group, metal of IVB group or their combinations, and (b) component, including oxide, hydroxide, carbonate of metal of group IIIA, metals of group IVA, metals of IVB group or their combinations, and composition for preliminary processing in fact does not contain oxides, hydroxides and carbonates of metals of IIIA, IVA or IVB groups before addition to it of compensation composition. method includes addition to composition for preliminary processing of compensating composition with components, different from components of composition for preliminary processing, in which compensating composition includes: (a) component, including H2TiF6, H2ZrF6, H2HfF6, H2SiF6, H2GeF6, H2SnF6 or their combinations, and (b) component, including oxide, hydroxide or carbonate of titanium, zirconium, hafnium, aluminium, silicon, germanium, tin or their combinations, and composition for preliminary processing in fact does not contain oxides, hydroxides and carbonates of titanium, zirconium, hafnium, aluminium, silicon, germanium or tin before addition to it of compensating composition. |
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Covering element for protection against erosion Invention relates to covering element for protection against erosion in case of contact with melted aluminium of substrate from material based on iron, titanium material or supersolid material. Covering element contains lower layer in form of Cr metal film, b layer in form of CrN film, intermediate layer and upper a layer in form of TiSiN film, with intermediate layer being made from laminar films, consisting of TiSiN films of a layer and CrN films of b layer, alternately applied on the surface in such a way that films of similar type do not overlap. |
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Method of precipitating pyrocarbon on fuel particles Precipitation of pyrocarbon on fuel particles is carried out by supply of hydrocarbon and inert gas mixture into precipitation zone for time τ, increase of the total expenditure of gas mixture by 1.1-1.4 times in comparison with initial value. At time moment, equal τx=(0,45τ-0,55τ), supplied of hydrocarbon is stopped for 1-3 s, and in order to provide optimal mode of fluidisation of fuel particles, consumption of inert gas is increased by value, equal to the product of hydrocarbon consumption at time moment τx and ratio of hydrocarbon and inert gas molecular weights. |
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Device for thermochemical treatment of parts in non-self-maintained glow discharge Device for thermochemical treatment of parts in non-self-maintained glow discharge contains a vacuum chamber with substrate for parts placement, a power supply source connected by its negative pole to the substrate and by its positive pole to the chamber body, a thermionic electrode and the second power supply source connected by its negative pole to the thermionic electrode substrate and by its positive pole to the chamber body. The thermionic electrode is made as a step-like Fresnel phase zone plate with oscillation phase of its even zones changing per π. The formulas are specified to determine a value of a step and disc radius for Fresnel phase zone plate. |
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Method comprises placing a powder sample of titanium carbide between two layers of molybdenum foil, the foil electric explosion with the formation of pulsed multiphase plasma jet, melting with the plasma jet of the friction surface at the value of the specific energy flux of 3.5-4.5 GW/m2 and sputtering on melted layer of components of the plasma jet, followed by self-hardening and production of a composite coating comprising titanium carbide and molybdenum. |
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Corrosion inhibitor of prolonged action for protection of oil field and oil-refining equipment contains polymer compound - alkyl- and oxyalkylpolyamines, partially quartenised by nitrogen atoms, non-ionogenic suface-active substance and hydrocarbon solvent - monoatomic alcohol CnH2n+1OH, where n=1-4, with the following component ratio, wt %: polymer compound 5-30; SAS low-molecular 5-20, solvent - the remaining part. As surface-active substance for protection against hydrogen sulfide corrosion used is low-molecular quarternary ammonium compound, and for protection against carbonic acid corrosion used is ester of unsaturated dicarboxylic acid and alcohol. |
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Production of float gyro gas dynamic bearing Flange and support with hemispherical opposed working surfaces are shaped. Ion-beam etching is used to produce aerodynamic profile at support working surface of diameter D as grooves of equivalent spherical helical lines. Variable depth in groove cross-section is defined by monotone increase in thickness of mask element with cut-outs in direction from connector to support pole. Variable depth in groove cross-section is ensured by making the mask second element as a fixed shield perpendicular to ion flow axis. |
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Corundum microfilm and method of its obtaining (versions) To obtain corundum microfilm layer of corundum is precipitated on film base or drum from material with reduced adhesion, as such applied is fluoroplast, after that, corundum film is removed from film base or drum. Layer of corundum can be precipitated on film base from sublimated material, as such applied is fluoroplast-4, with further sublimation of base. Also corundum layer is precipitated on film base from soluble material, as such applied is nitrocellulose, with further dissolution of base. In addition to this, to obtain corundum microfilm corundum layer is precipitated on film base or drum from melting material, as such applied is tin, after which film base or drum is melted and corundum layer is separated. |
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Method to produce diamond-like coatings by combined laser action Diamond-like coatings are produced in vacuum by spraying of target material with an impulse laser. The target material made of graphite of high degree of purity (more than 99.9%) is exposed to combined laser radiation: first short-wave (less than 300 nm) pulse radiation, the source of which is a KrF-laser with wavelength of 248 nm and specific energy of 5·107 W/cm2, as a result of which ablation is carried out, and gas-plasma phase of target material is generated. Subsequent exposure of a gas-plasma cloud during cloud flight from a target to a substrate is carried out by long-wave (more than 1 mcm) laser radiation. The source of long-wave laser radiation is a gas CO2-laser or a solid-state fibrous laser radiator. |
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Invention relates to technology of production of synthetic diamond material, which can be applied in electronic devices. Diamond material contains single substituting nitrogen ( N s 0 ) in concentration more than 0.5 ppm and having such complete integral absorption in visible area from 350 nm to 750 nm, that at least nearly 35% of absorption is attributed to N s 0 . Diamond material is obtained by chemical deposition from vapour or gas phase (CVD) on substrate in synthesis medium, which contains nitrogen in atomic concentration from nearly 0.4 ppm to nearly 50 ppm, and gas-source contains: atomic part of hydrogen, Hf from nearly 0.40 to nearly 0.75, atom part of carbon, Cf, from nearly 0.15 to nearly 0.30; atomic part of oxygen, Of, from nearly -.13 to nearly 0.40; and Hf+Cf+Of=1; ratio of atomic part of carbon to atomic part of oxygen, Cf:Of, satisfy the ratio nearly 0.45:1<Cf:Of< nearly 1.25:1; and gas-source contains atoms of hydrogen, added in form of hydrogen molecules, H2, with atomic part of the total quantity of present atoms of hydrogen, oxygen and carbon between 0.05 and 0.40; and atomic parts of Hf, Cf and Of represent parts from the total quantity of atoms of hydrogen, oxygen and carbon, present in gas-source. |
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Method of deposition of nanoscale film alpha- al2o3 (0001) on metal substrates Heating, evaporation and deposition of aluminium oxide on the metal substrate with a particular crystal orientation is carried out. Deposition of vaporised stream consisting of AlO particles and (AlO)2 is carried out. The vaporised stream consists of AlO particles and (AlO)2, and after each subsequent monolayer the exposure is carried out in molecular oxygen at a partial pressure of 10-7 mmHg for 3 minutes at a substrate temperature of 700°C. |
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Method for machining of cylinder block, cylinder block and cylinder block with thermal spraying In compliance with this invention, ledge is made in cylinder bore on engine crankcase side and directed thereto. Coat is sprayed on cylinder bore inner surface and ledge inner surface making the extension of cylinder inner surface. Then, al least a part of said ledge is removed with sprayed coat on ledge inner surface after completion of coat spraying. |
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Method of obtaining carbon nanostructures (versions) and device for its realisation (versions) Invention relates to obtaining carbon nanostructures. In method of obtaining carbon nanostructures, which includes ignition in vacuum chamber of glow discharge under condition of constant electric current, hydrocarbon gas is supplied into near-cathode region of vacuum chamber in discharge channel in axial and tangential way, and hydrocarbon gas processing is performed under certain parameters of glow discharge. In the second version of the method mixture of inert gas with carbon porder particles is axially supplied into near-cathode region of vacuum chamber into discharge channel with supply of inert gas in tangential way. In device for obtaining carbon nanostructures, containing vacuum chamber with placed in it electrodes, direct current power supply unit, connected to anode and cathode, vacuum chamber has first tangential inlets into near-cathode region for hydrocarbon gas supply and second axial inlet from the cathode side for hydrocarbon gas supply, with electrodes being placed at R=20÷100 mm distance from each other in vacuum chamber. In the second version of device, vacuum chamber has first tangential inlets into near-cathode region for inert gas supply, and second axial inlet from the cathode side for supply of inert gas mixture with carbon powder particles. |
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Current-transmitting surface of dismountable contact connection (DCC) is cleaned and degreased. After application of liquid flux the surface is heated up to a temperature of 65-70°C. After mechanical treatment and removal of flux excess bismuth-based alloy with melting temperature of 47-60°C and thickness less than 0.1 mm is applied to the current-transmitting surface. In result of contact hybrid melting the coating is formed. In 3-4 minutes after application of the alloy to the current-transmitting surfaces they are cooled up to a temperature of 40°C. |
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Solution for chemical deposition of nickel coatings Solution contains, g/l: nickel dichloride 10-15, succinic acid 12-15, sodium fluoride 2-3, sodium hydroxide 4-6, sodium hypophosphite 17-20, copper-polymer complex of polyvinyl pyrrolidone 2.0-6.0, distilled water - the balance. |
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Method of reinforcing power constructions Invention relates to methods of reinforcing power constructions, which have existing or predictable collapsing sections, by means of strips of composition material. As strips used is woven or non-woven reinforcing filling agent from glass, basalt, synthetic polymer or carbon fibres. Said fibres are impregnated with polymer composition in amount 30÷60% from composite weight, providing their adhesion to power constructions and further hardening from +5°C to +100°C for from 5 minutes to two days. Polymer composition contains in wt %: epoxy resin 100, active epoxy diluent 5÷130, hardening agent 15÷110, thickening agent 5÷50, pigment or dye 0.5÷50. As gardening agent it contains product of interaction of amine component with monocarboxylic acids. as amine component used is mixture, consisting of primary aromatic amine or mixture of aromatic amines (A), secondary aliphatic amino alcohol (B) and tertiary aliphatic amino alcohol (C) in weight ratio A:B:C from 98:0.2:1.8 to 80:5:15. Monocarboxylic acid (D) is introduced in form of 25÷80% solution in monoatomic aliphatic or aromatic alcohol, or their ether with mono- or dicarboxylic acid, in ratio (A+B+C):D from 90:10 to 60:40 counted per 100% acid with further interaction by mixing in reactor at temperature from 50 to 130°C for from 20 to 120 minutes at rate of mixer from 100 to 3000 revolutions per minute. |
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Inhibitor of carbonic acid corrosion for steam boilers of low and medium pressure aminat pk-2 Invention relates to inhibitors of corrosion of carbon steels in acidic and neutral oxygen-containing water solutions. Inhibitor includes, wt.p.: morpholine 10-12, cyclohexylamine 8-10, dimethylaminoethanol 15-20, water - the remaining part. |
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Sliding element with coating of thermal sputtering and method of its manufacturing Invention relates to the field of metallurgy, namely, to the sliding element in an internal combustion engine. The sliding element of the internal combustion engine includes a base and a coating produced by means of thermal sputtering of a powder containing, wt %: from 55 to 75 Cr, from 3 to 10 Si, from 18 to 35 Ni, from 0.1 to 2 Mo, from 0.1 to 3 C, from 0.5 to 2 B and from 0 to 3 Fe. |
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Monocrystalline welding of materials hardened in one direction Invention relates to laser surfacing of metal hardened in one direction. Powder is fed onto substrate surface (4) of structural element (1, 120, 130) made of hardened metal with dendrites (31) oriented in one direction (32). Beam scanning rate, laser power, beam diameter, powder stream focus and/or powder flow rate are set to ensure local orientation of temperature gradient (28) at crystallisation front (19) less than 45° towards substrate dendrite direction (32) for dendrite (31) in substrate (4). |
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Industrial steam generator for application of coating from alloy onto metal strip (ii) Invention relates to a plant for vacuum deposition of a coating from a metal alloy onto a substrate (7). The generator - mixer of steam of the plant comprises a vacuum chamber (6), which has facilities for development of underpressure in it relative to environment and facilities providing for substrate (7) inlet and outlet. The chamber (6) is substantially impermeable for environment. An ejector head (3) for deposition of steam is designed to create a jet of steam of a metal alloy with sound speed in direction of the surface of the substrate (7) and perpendicularly to it. The ejector head (3) tightly communicates with a separate mixing device (14), which in its turn is connected upstream accordingly with at least two crucibles (11, 12), containing two different metals M1 and M2 in liquid form. Each crucible (11, 12) is connected by its own separate pipe (4, 4') with a mixer (14). |
Another patent 2513730.