Sliding element, particularly, coated piston ring, and method of its fabrication. RU patent 2520245.
 Sliding element / 2519181Invention 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. |
 Sliding element / 2518823Invention 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. |
 Piston ring / 2284428Piston ring has wear-resistant layer and adaptation oxide layer applied to surface of wear-resistant layer. Wear-resistant layer used is oxycarbonitride layer of material from which ring is manufactured. |
 Durable sliding member / 2245472Outer surface of the sliding member is covered with a material composed of, in per cent of mass, 30-70% of powder-like molybdenum, 10-40% of powder-like chromium-nickel alloy, 3-40% of ceramic powder, and 2-15% of powder-like solid lubricant. The ceramic powder is made of chrome oxide or chrome carbide. The powder-like solid lubricant is made of at least one matter from the group composed of calcium fluoride, manganous sulfur and molybdenum disulfide. |
 Nano- and microstructured ceramic thermal barrier coating / 2518850Invention 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. |
 Application method of insulation coating on metal wire / 2511441Method involves application of an adhesive layer based on a thermoplastic adhesive and further application of a functional layer from nanostructured polymer composite material based on polyethylene with disperse filler from montmorillonite. The adhesive layer is applied by wire drawing through molten thermoplastic adhesive. The functional layer is applied by extrusion. |
 Cold-rolled steel plate with excellent formability and its manufacturing method / 2511000Invention refers to metallurgy. In order to achieve the technical result, a plate is made from steel containing the following components, wt %: C 0.010 to 0.035 (excluding 0.010%), Si 0.1 or less, Mn 0.35 or less, P 0.035 or less, S 0.02 or less, N 0.0060 or less, Al 0.005 to 0.1, Fe and inevitable impurities are the rest provided that [% Mn]/[% Al]<20, where [% M] represents content (wt %) in steel of element M, with that, diameter of ferrite grain in steel does not exceed 5 mcm, and at least 50% of separated cementite is within boundaries of ferrite grains. |
 Method of depositing antifriction coatings on side surface of rails / 2510433Method involves preliminary deposition of rough layer with thickness of 0.01-3.0 mm on a metal surface using an electrical discharge method, followed by deposition of an antifriction layer. Electrical discharge deposition is carried out using electrodes made of medium- and high-carbon steels, and the antifriction layer is deposited with a paint gun with thickness of 0.5-1.5 mm using a composition consisting of mineral oil or a mixture of mineral oils based on saturated hydrocarbons, modified with nanoparticles of iron, formed during thermal decomposition of liquid iron pentacarbonyl, which is premixed in the medium of oil in a reactor with mixer rate of 1000-2500 rpm for 30-120 minutes, followed by feeding a ternary mixture of powdered filler into said reactor while mixing, said mixture consisting of graphite (A), molybdenum disulphide (B) and tetrafluoroethylene polymer (C) in ratio A:B:C from 40:40:20 to 80:10:10. Said composition contains the following, pts.wt: mineral oil or mixture of mineral oils 100, iron nanoparticles 0.3-4.0 and ternary mixture of powdered filler 15-60. |
 Hot formed element and method of its production / 2509827Hot formed element of coated sheet steel surface layer comprises are of Ni diffusion, intermetallide compound layer and ZnO layer. Said layers are overcoated with Ni diffusion area. Intermetallide compound layer corresponds to γ-phase displayed at Zn-Ni alloy phase equilibrium diagram. Said layer has intrinsic potential of submersion in air-saturated water solution of NaCl with 0.5 mol/l concentration at 25 °C±5°C in the range of -600 to -360 mV relative to standard hydrogen electrode. Said element is produced by heating sheet steel with Ni-based coat containing on its surface a layer of coat from Zi-Ni alloy containing 13 wt % of mote of Ni in the temperature range of Ac3 transition to 1200°C with subsequent hot forming of steel sheet. |
 Method of timber metal coating / 2509826Timber surface is coated with a ply of liquid glass prior to deposition. Ply of aluminium powder is powdered on non-solidified surface of aforesaid ply. Deposition of metal or alloy plies is effected by plasmatron at the power of 4.5 kW and plasma-forming gas flow rate of 0.5 m3/min. |
| Method of making protective decorative coatings on wood articles / 2509823 Beforehand, wood surface is coated with first ply of epoxy resin and second ply of epoxy resin with aluminium powder at 1:1 ratio. Deposition of metal or alloy plies is effected by plasmatron at the power of 3.9 kW and plasma-forming gas flow rate of 0.8 m3/min. |
 High-strength cold-rolled steel plate with excellent formability and its manufacturing method / 2507274Plate is made from steel containing the following, wt %: C 0.05-0.20, Si 0.10 or less, Mn 0.2-1.7, P 0.10 or less, S 0.10 or less, Al 0.01-0.10, N 0.010 or less and Pe and impurities are the rest provided that [% Mn]/[% C]≥2.0, where [% M] represents content (wt %) of M element in steel, which has tensile strength (TS) at least of 390 MPa, relative elongation (EE) at least of 30% and elongation corresponding to yield point, (YP-EL) after ageing with constant increase in steel plate temperature, which does not exceed 1.0%. |
 Chrome-plated part (versions), and its manufacturing method / 2500839Part includes a substrate, a lustre nickel coating layer above the substrate, a nickel coating layer with precious potential on the lustre nickel coating layer; with that, difference of electrical potentials between the above layers is within 40 mV to 150 mV, and a trivalent chrome coating layer formed on the nickel coating layer with precious potential and having at least one of the structure with micropores and structure with microcracks. Trivalent chrome coating layer has 10000/cm2 or smaller pores or includes 4.0 to 20 atm % of carbon and 7 to 16 atm % of oxygen, or has been obtained by means of the main chromic sulphate as metal source and in addition it contains 0.5 atm % of iron or more, or contains at least one of 0.5 atm % of iron or more and 4.0 atm % of carbon or more, or contains at least one of 1 atm % to 20 atm % of iron and 10 atm % to 20 atm % of carbon, or is amorphous. The method involves formation of the lustre nickel coating layer above the substrate, formation of layer of nickel coating with precious potential on the lustre nickel coating layer; with that, difference of electric potentials between layers is 40 to 150 mV, and electric deposition of the trivalent chrome coating layer on the layer of nickel coating with precious potential. Amount of electric potential regulator added to the first electrolytic bath for formation of the layer of nickel coating with precious potential is regulated so that it can be higher than the amount added to the second electrolytic bath for formation of a lustre nickel coating layer. |
 Heterostructures sic/si and diamond/sic/si, and also methods of their synthesis / 2499324Heteroepitaxial semiconductor film on a single-crystal silicon substrate is grown by the method of chemical deposition from the gas phase. Synthesis of the heterostructure SiC/Si is carried out on a single-crystal silicon substrate in a horizontal reactor with hot walls by means of formation of a transition layer between the substrate and the film of the silicon carbide with the speed of not more than 100 nm/hour with heating of the specified substrate to the temperature from 700 to 1050°C with application of a gas mixture containing 95-99% of hydrogen and the following sources of silicon and carbon SiH4, C2H6, C3H8, (CH3)3SiCl, (CH3)2SiCl2, at the same time C/Si≥2, and formation of the single-crystal film of silicon carbide with the help of supplu of steam and gas mixture of hydrogen and CH3SiCl3 into the reactor while maintaining absolute pressure in the reactor in the range from 50 to 100 mm of mercury column. The silicon substrate is a plate that has an angle of inclination of crystallographic direction (111) in direction (110) from 1 to 30 of angular degrees and in direction (101) from 1 to 30 angular degrees. |
 Industrial steam generator for application of coating from alloy onto metal strip (ii) / 2515875Invention 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). |
 Evaporator for vacuum application of thin films of metals and semiconductors / 2507304Evaporator is made from carbon material with a recess for arrangement of sputtered material in the form of a groove located normally to a gravitational field intensity vector and having the type of a trapezoid in its cross section. A trapezoid base that is lower in relation to the gravitational field is lower than an upper one. With that, an insert in the form of a volumetric element from W or Mo or Ta is arranged in the groove. |
 Non gamma-phase cubic alcro / 2507303Coating for a cutting tool has at least one layer containing metallic components having the following formula: AlxCr1-x, where x represents an atomic fraction complying with the following ratio: 0≤x≤0.84, and includes nonmetallic components having the following formula: O1-yZy, where Z represents at least one element chosen from the following group: N, B, C, and 0≤y≤0.65, and preferably y≤0.5. The coating is applied at the speed providing formation in it of at least partially non-gamma Cr-containing and oxide-containing phase with a cubic structure that does not change after annealing at the temperature of up to 1000°C during 25 minutes. |
 Method of producing sandwiched coating for cutting tool / 2503743Applied is lower layer of titanium, silicon and chromium nitrides at the following ratio of components in wt %: titanium - 87.5-93.4, silicon - 0.6-1.0, chromium - 8.5-10.0. Then mid layer of carbonitride of titanium, silicon and chromium is applied at the following ratio of components, wt %: titanium - 87.5-93.4, silicon - 0.6-1.0, chromium - 8.5-10.0. Then upper layer of carbonitride of titanium and silicon is applied at the following ratio of components in wt %: titanium - 98.5-99.1, silicon - 0.61.5. Coating layers are applied horizontally in one plane by three cathodes. First and second cathode are made of titanium and silicon alloy and arranged in opposition while third cathode is made of titanium and aluminium and arranged there between. Lower and mid layers are applied by three cathodes while upper layer is applied by first and second cathodes. |
| Method of producing sandwiched coating for cutting tool / 2503742 Vacuum plasma sandwiched coating is applied. First, applied is lower layer of titanium, niobium and aluminium nitrides at the following ratio of components in wt %: titanium - 81.0-89.0, niobium - 4.0-8.0, aluminium - 7.0-11.0. Then mid layer of carbonitride of titanium, niobium and aluminium is applied at the following ratio of components: %: titanium - 81.0-89.0, niobium - 4.08.0, aluminium - 7.0-11.0. Then top layer of carbonitride of titanium and niobium is applied at the following ratio of components, wt %: titanium - 88.0-94.0, niobium - 6.0-12.0. Coating layers are applied by three cathodes located horizontally in one plane. First and second compound opposed cathodes of titanium and molybdenum while third compound electrode of titanium and zirconium arranged there between. Lower and mid layers are applied by three cathodes while upper layer is applied by first and second cathodes. |
| Method of producing inserts / 2502827 Two-layer coat is deposited in vacuum-plasma process on hard alloy plate. Titanium and aluminium nitrides are applied to make bottom layer while nitrides of niobium and molybdenum or niobium and aluminium alloyed with zirconium make bottom layer. Both layers are applied at 600°C and nitrogen pressure of 4.3·10-4 Pa. After application of top layer nitrogen is evacuated from the chamber to force air therein and to cool chamber with inserts. |
 Assembly method of piston-rod and piston assembly / 2499900Piston pin is installed in a piston hole and a piston-rod is installed on the piston pin. First, onto the steel piston pin surface there mechanically applied is mechanically activated powder from material based on nickel with shape memory effect with the particle size of 30-50 mcm by plasma sputtering in vacuum so that a layer 0.2-3 mm thick is obtained. Then, vacuum annealing of the applied layer is performed at the temperature of 500-800°C, thermomechanical treatment is performed at heating to 30 to 250°C or at cooling to -10÷0°C by means of liquid nitrogen and at running-in of the applied layer at that temperature with rollers in radial direction per 50-70 passes with accumulation of deformation degree of ε ≥ 3.7%. Then, after the piston pin is installed into the piston hole, heating of the connection is performed to 20.7-325.8°C of the end of reverse martensitic transformation. |
FIELD: machine building.
SUBSTANCE: 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.
EFFECT: better combination of friction and wear resistance factors.
16 cl, 1 tbl
The technical field
The invention relates to rolling element, in particular, porshneva ring, with coverage of at least one slip surface, and the method of production of rolling element.
Sliding elements, such as piston rings, pistons or cylinder liner, should work in internal combustion engines for long term at a time when more low friction and low wear. Friction, which in internal combustion engines is directly related to fuel consumption can be kept low thanks to the coating of DLC (diamond like carbon). In addition, in principle, achievable layer thickness up to 40 mm. However, with layer thickness greater than 5 microns there is a problem in that layer properties, for example, with regard to the structure and composition of the layer will change, so that the required service life is reached. This also holds true for layer thicknesses of less than 5 microns.
The present invention is to create a moving element containing metal adhesion layer, as well as covering the DLC type ta-C with the appropriate layer thickness to ensure minimum loss of power to overcome friction in the course of the service life of the item.
The level of technology
Layers of diamond-like carbon (DLC) are metastable form of amorphous carbon with significant sp 3-hybridized carbon atoms. Supply layers of diamond-like carbon various foundations in order to create new components are currently in various ways. The most well known methods, which can be covered sliding elements produced EN masse, are plasma-chemical vapor deposition (PA-CVD), evaporation and vacuum-arc deposition (DE4006456). Layered system that can be obtained in accordance with this, usually contain hydrogen in the case of PA-CVD not contain hydrogen in the case of spraying or vacuum-arc deposition from the vapor phase. A summary of possible systems with DLC layers can be found in VDI Guideline 2840 in section Carbon films .
Table 1 lists the documents that reflect the state of the art in the context of this application. In the list, a distinction is made between publications, which are significant for the way, and those that are substantial for the product.
Table 1 Room Year TypeVital signs
DE 3901401
1989Getting DLC/ way
The control method of vacuum-arc process of vapour deposition
DE 4006456
1990The method of control of the arc discharge in vacuum
DE 10240337
2002A device for separating particles, which absorbing electrode installed in the shadow of the created plasma is created and (electro)magnetic field to accelerate the media positive charges
DE 19850217/US 6558757
1998Method of coating in vacuum, in which the ionized material from the target by laser and react with the gas stored in the pores, and then deposited on the canvas.
EP 1829986
2010The method of mechanical processing of surfaces that have a coating of solid carbon
EP 0724023
1996DLC-product
Solid, amorphous, not containing hydrogen, carbon layer (<0.5 at.% H, the modulus >400 HPa, hardness >40 HPa, maximum layer thickness: several microns received the vacuum-arc method
DE 102005063123B3
2005Rolling element wear-resistant and break-layer, and break-layer contains hydrogen and nanocrystalline carbide phase
DE 102008016864 B3
2008Piston ring with DLC-coated with 3-layer system: adhesion layer, metallic layer of amorphous carbon not containing metal amorphous carbon layer, the resistance of >5000 Ohms
US 6231956
1997Wear layered system consisting of a framework of titanium alloy, middleware and amorphous carbon layer
DE 19735962A1
1997Guide Bush with hydrogen internal DLC-coating
DE 19850218
1998Device and method of covering the basics in a vacuum with special absorbing electrode, which is set so that the particles were not deposited directly on the canvas.
WO 2006125683A1
2006Piston ring with 3-layer system consisting of 1-layer from the item group IVB, VB or VIB (<1 micron), 2-layer of diamond-like nanocomposites nanocomposite (<5 mm) and 3 diamond-like layer (layer thickness 0,1-10 microns)
DE 102008022039
2008Anti-wear coating of amorphous carbon layer with the oxygen content of 0.5 to 25 at.%.
From the EP 0724023 known not containing hydrogen (<0.5 at.%) DLC-coating with good friction characteristics in the absence of lubrication and reduced use of lubricants. This layer has a hardness >40 HPa and the modulus >400 HPa with a maximum thickness of several microns.
From the document DE 10 2005063123 B3 known sliding element with DLC-coating with good pererabatyvaushchei. Since the coating service life is too short not to provide permanent low friction during the entire service life of the moving element.
DE 102008016864 refers to the moving element with multilayer coating, which includes, from the inside outwards, adhesion layer, metal - and hydrogen-containing DLC-layer and do not contain metal, but containing hydrogen DLC layer.
DE 19735962 A1 reveals the guide sleeve and the method for solid carbon film on the inner surface of the guide sleeve, and solid carbon film hydrogenated amorphous carbon is produced on the inner surface by the method of plasma-chemical deposition from the vapor phase.
WO 2006/125683 A1 reveals piston ring that contains, from the inside outwards, the layer containing a group IVB, VB or VIB, intermediate layer with diamond-like nano-composite structure, and the DLC layer.
It is known that good wear resistance is achieved when the content sp 3-hybridized carbon atoms as high as possible, in particular, is more than 60 at.%. Such layers are called layers ta-C, and can be obtained from a conventional spraying process or the so-called vacuum-arc methods (cf. in this regard, the documents DE 4040456 C1 and DE 19850218 C1 table 1). Not containing hydrogen coverage ta-C can be obtained from few microns thick as oxygen-containing layers (see, for example, ideas DE 10 2008022039 A1 table 1) and as not containing oxygen and hydrogen layers (cf. in this regard EP 0724023 A1).
In this context, also known PVD coatings on the basis of solid materials, which in most cases contain chromium nitride. While these layers have the required wear resistance, they do not have the necessary low coefficient of friction.
Summary of the invention
Against this background, the objective of the invention is to create a sliding element that is more improved in respect of a combination of friction and wear resistance. In addition, you need to develop a way of obtaining such a moving element.
Therefore, sliding element according to the invention has at least one sliding surfaces, from the inside outwards, coating with metal adhesion layer and DLC-layer type ta-C thickness of at least 10 microns. Metal adhesion layer preferably not only provides adhesion DLC layer, but can also eliminate the internal stresses, which occur in this layer. The minimum thickness of 10 microns achieve the required durability and additionally allows to get a good friction characteristics during the whole service life of the engine. In particular, wear characteristics can be adapted as the most flexible element, in particular, porshneva ring and the counterbody, such as the cylinder liner. The efficiency of coating according to the invention is provided below technological stages, in particular the clearing of a surface that you want to cover, the method of deposition of metal ions, and describes how to obtain adhesive layer and DLC layer. Therefore, we can give a much improved sliding element.
One of the Central requirements of the moving element, in particular, porshneva ring, is to provide coverage that is maintained during the life of the element, to ensure minimum loss of power to overcome friction throughout the work. During the initial testing of the engine was found that although wear reached for the system piston ring with taC-coating /treadmill of AlSi was about 60% lower than that of piston rings coated with DLC-layer containing hydrogen, the required thickness of at least 10 microns, depending on the application and the sliding contact surfaces. The thickness of the coating in General, preferably up to about 20 microns.
The preferred ways of implementation are presented in the following claims.
To provide sufficient adhesion layer, in particular, in the case of layer thickness ta-C for more than a few microns, it is necessary, furthermore, to provide metal adhesion layer between the base and the DLC layer. Currently, based on the original received information, it is considered preferable to the adhesive layer to contain at least one of the following materials: chrome, titanium, chromium nitride and tungsten.
In addition, it was found that for adhesive layer best thickness from 0,1 mm to 1,0 mm.
Next, especially good properties were found when the DLC layer essentially did not contain oxygen and/or hydrogen, that is contained each of these elements in the amount of less than 0.5 at.%.
Hardness and elastic modulus DLC-layer also affect tribological properties of the piston rings. During testing it was found that the coverage is the best surface hardness not more than 55 GPA and the modulus of elasticity is not above 550 HPa.
Unlike prior art when checking the suitability, both outside and in the engine, it was found, in addition, what is particularly good options wear is achieved when the DLC layer has the content sp 3-hybridized carbon atoms at least 40 at.%.
Intentional decrease in the content sp 3 in the outer layer 1-3 microns near edge leads to further reduce friction for break and to reduce the time of breaking-in. In preliminary trials outside the engine was found that the following variant of implementation, in which external 1-3 microns near the edges were doped lead to further improvement of thermal stability and characteristics of grinding Prigova in the conditions of insufficient lubrication under maximum loads up to 700 N.
In particular, to ensure low friction, the working surface of the moving element should be as smooth as possible. Available here DLC-layer preferably has in the state immediately after the coating depth finish Rz <6 microns, and in the ready state depth finish Rz <2 microns in particular <1 micron, and also reduced the height of the peak Rpk <0.3 microns in particular, <0,1 microns. In this regard, the size of the EP 1829986 A1 and DE 19850218 C1 is included in the object of this application.
Cast iron or steel, for special applications can be nitrided preferable for the foundations and base material of moving the item that you want to cover. As for injection material as the base material, the preferred forms are:
- non-alloy soft cast iron with lamellar graphite,
- alloyed, heat-treated or untreated grey cast iron carbides,
- nodular cast iron, tempered,
- compacted graphite iron, soft,
- cast steel (at least 11% wt. chromium, tempered martensite structure enabled special carbides, nitrated or easterbunny).
As for the steel as a basic material, the preferred forms are:
- chromium steel of at least 11% wt. chromium, nitrated or easterbunny,
- chrome-silicon-carbon steel.
Tests on the engine has shown that especially good sostavlyayuschie oil action piston ring, covered with a layer DLC type ta-C, according to the invention, is achieved with a very small, acute lower ends of the sliding surface. Thus, preferably, in addition to the lower edge of the sliding surfaces of the piston rings according to the invention had a radius of not more than 0.2 mm, preferably less than 0.1 mm
The above objective is achieved, also described in 14 method of obtaining the moving element, in particular, piston rings, which hosts the metallic coating of the adhesive layer and a layer DLC type ta-C for a thickness of at least 10 microns. The process of obtaining carried out the laser-arc method in vacuum that has already been described in various documents (see table 1), was improved in the context of the present invention to obtain layer ta-C thickness >10 microns that was used adhesive layer, optimized in terms of selection of material and the thickness of the layer, and technological parameters provide stability in the entire time the coating. The preferred dimensions and the benefits that can be achieved with this method, are revealed, on the one hand, from the earlier description of the moving element in the invention. Next, let's mention at this point that all distinctive features described below in connection with the method can also be applied to the moving element in the invention.
On the other hand, we should mention that the adhesive layer can be formed especially reliable way spraying method of termocamini from the vapor phase or deposition from the vapor phase, for example, arc method.
As mentioned above, special benefits in respect of adhesion of the adhesive layer with a basis of the moving element is achieved, if the surface that you want to cover, clear way of sputtering of metal ions.
The roughness of the finished coating can profitably be reduced by lapping, polishing belts and/or brush.
1. Sliding element, in particular in piston rings for use in internal combustion engine, and the sliding element has at least one surface slip from the inside outwards floor, containing metal-containing adhesive layer and a layer DLC DLC type tetrahedral carbon ta-C thickness of at least 10 microns, and a layer type tetrahedral carbon ta-C is a content sp 3-hybridized carbon atoms at least 40 at.%, wherein the layer type tetrahedral carbon ta-C contains hydrogen in the amount of less than 0.5 at.%, and content sp 3-hybridized carbon atoms in the outer layer 1-3 microns reduced.
2. Sliding element according to claim 1, wherein the adhesion layer contains at least one of the following materials: chrome, titanium, chromium nitride and/or tungsten.
3. Sliding element of claim 1 or 2, wherein the adhesive layer has a thickness from 0,1 mm to 1,0 mm.
4. Sliding element of claim 1, characterized in that layer type tetrahedral carbon ta-C contains oxygen in the amount of less than 0.5 at.%.
5. Sliding element of claim 1, characterized in that the hardness of the layer DLC DLC does not exceed 55 HPa, and the modulus does not exceed 550 HPa.
6. Sliding element of claim 1, characterized in that the outer layer 1-3 microns doped.
7. Sliding element of claim 6, wherein the outer layer 1-3 microns type tetrahedral carbon ta-C doped at least one of the following elements: boron, oxygen and/or silicon.
8. Sliding element according to claim 1, wherein the coating has a depth of microroughnesses Rz <6 microns, preferably <2 microns and, in particular, <1 micron.
9. Sliding element according to claim 1, wherein the coating has reduced the height of the peak of microroughnesses Rpk <0.3 microns, preferably <0,1 microns.
11. Sliding element of claim 1, characterized in that the radius of the bottom edge of the sliding surface is not more than 0.2 mm, preferably <0,1 mm
12. The method of obtaining the moving element in one of the paragraphs. 1-11, in particular in piston rings for use in internal combustion engines, which are coated metal-containing adhesive layer and a layer of diamond-like carbon DLC type tetrahedral carbon ta-C, and layer DLC DLC perform with a thickness of at least 10 microns.
13. Way under item 12, wherein the adhesive layer is produced by spraying, termocamini from the vapor phase or deposition from the vapor phase, for example, arc method.
14. The method according PP. 12 or 13, distinguished by the fact that the layer type tetrahedral carbon ta-C get a laser-arc method in a vacuum.
15. The method indicated in paragraph 12 notable that cover the surface of the moving element is cleaned before application of coatings by spraying of metal ions.
16. The method indicated in paragraph 12, wherein the floor after its formation looks by lapping, polishing belts and/or brush.