378 results about "Ion plating" patented technology

According to the composite protective coating for the bolt surface, the preparation method and the application, the composite coating takes a bolt of a common model of an iron tower as a substrate, and a cathode arc ion plating technology and a magnetron sputtering technology are combined; the preparation method comprises the four main steps of substrate surface pretreatment, metal bonding layer preparation, metal nitride bearing layer preparation and surface molybdenum disulfide solid self-lubricating layer preparation. According to the method, reliable preparation of the composite coating on the complex thread surface of the bolt is achieved, the anti-loosening capacity of the bolt is remarkably improved through the low friction coefficient, good bearing capacity and excellent wear resistance, and meanwhile the composite coating further has good corrosion resistance and has wide application prospects in iron towers for communication, electric power and the like.

The invention discloses a fuel cell metal bipolar plate with a multi-layer composite gradient coating and a preparation method of the fuel cell metal bipolar plate, and relates to a preparation method of a surface coating of a fuel cell metal bipolar plate. The problem that a metal bipolar plate in a fuel cell is poor in corrosion resistance is solved. The Ti / TiN / TiCN multi-layer composite gradient is prepared on a substrate through a multi-arc ion plating technology by regulating and controlling parameters such as air pressure and flow of nitrogen and methane, the coating is composed of a pure Ti base layer and a transition layer with three to five periods, a gradient multi-layer structure is adopted, TiN metal nitride with good conductivity is adopted, and the conductivity of the coating is greatly improved. The interface contact resistance is reduced, meanwhile, the permeation of corrosive liquid and the further corrosion of the corrosive liquid to the coating and the matrix material are effectively prevented, the corrosion resistance of the metal bipolar plate in an acid environment is remarkably improved, and the interface contact resistance of the surface of the metal bipolar plate under the working pressure of a fuel cell is reduced.

The invention provides a lead-bismuth reactor nuclear sampler coating and a preparation method thereof.The preparation method comprises the steps that S3, according to the thickness of a CrAl coating, the bias voltage and target current of multi-arc ion plating equipment are adjusted, the bonding strength of the coating and a base body is optimized, and the target adhesive force reaches the scratch test critical load or above; s4, according to the bonding strength, the nitrogen flow and the air pressure are adjusted, a compact CrAl coating microstructure with the porosity lower than a porosity threshold value is generated, and the quality of the microstructure is detected and verified through a scanning electron microscope; s7, according to the thickness consistency, a screw rod or a pin shaft is selected as a base body part, a CrAl coating is deposited on the surface of the screw rod or the pin shaft to be matched with the sleeve cap, and the gap between the sleeve cap and the shaft part is controlled to be within a gap threshold value; and S10, according to hardness and wear resistance test results, the deposition time and bias voltage are adjusted, the performance of the CrAl coating and the performance of the TiN coating are optimized, and the requirements for long-term corrosion resistance and wear resistance in the lead-bismuth alloy environment are met. According to the invention, excellent performances of long-term corrosion resistance and wear resistance in a high-temperature lead-bismuth environment are realized, and the service life of parts is remarkably prolonged.

The invention discloses an AlCrN / TiSiN / AlCrTiSiON pre-oxidation multilayer composite coating and a preparation process thereof, belonging to the technical field of coatings. The bottom layer of the composite coating is an AlCrN transition layer, and an AlCrN / TiSiN nano multilayer film and a TiSiN high-hardness layer are sequentially stacked for 1-4 times on the transition layer; The outermost layer is a compact AlCrTiSiON pre-oxidation coating, wherein the AlCrTiSiON pre-oxidation coating has excellent wear resistance and heat resistance. The coating is prepared by adopting an arc ion plating technology. The invention prepares the pre-oxidation coating with high hardness, high wear resistance and high heat resistance through process design and optimization of coating structure and pre-oxidation layer process parameters.

The invention relates to the technical field of deposition of wear-resistant and corrosion-resistant coating materials on metal surfaces, in particular to a high-toughness CrNbZrNiSiBN high-entropy nitride coating and a preparation method thereof. A bonding layer formed by a Cr layer, a transition layer formed by a CrN layer and a functional layer coated with CrNbZrNiSiBN high-entropy nitride are sequentially arranged on the surface of a base material. And the total thickness of the coated functional layer is 2-10 microns. The method is completed by adopting an ion beam assisted arc ion plating technology, and the prepared composite coating has the advantages of relatively high hardness, relatively good toughness, wear resistance, corrosion resistance, high-temperature oxidation resistance and the like. The coating can be used for strengthening and protecting the surfaces of cutters, molds, aerospace, marine ship parts and the like.

The present application relates to the field of vacuum coating technology, and in particular to a multi-arc ion coating device. The multi-arc ion coating device includes a coating module, which includes a vacuum chamber, a coating arc source and an etching arc source. The coating arc source and the etching arc source are both connected to the vacuum chamber, and the interior of the vacuum chamber is used to introduce reaction gas. The multi-arc ion coating device uses an etching assembly composed of an etching arc source and an anode assembly to etch the surface of a workpiece, and then deposits a coating on the workpiece through the coating arc source, which can improve the bonding force between the outer surface of the workpiece and the film layer, so that the workpiece surface obtains a dense, high-hardness, high-wear-resistant high-performance functional film layer to cope with various complex working conditions and process requirements.

The invention relates to the technical field of high-wear-resistance alloys, and particularly discloses a preparation method of a high-wear-resistance alloy steel lining plate. The preparation method comprises the following steps that S1, an alloy steel lining plate is placed in a plating solution to be electroplated, and an alloy steel lining plate A with a plating layer A on the surface is obtained; the plating solution comprises the following raw materials: 45-60 g / L of sodium citrate dehydrate, 30-35 g / L of boric acid, 5-8 g / L of ammonium chloride, 80-100 g / L of nickel aminosulfonate, 180-200 g / L of iron aminosulfonate, 0.5-0.8 g / L of lauryl sodium sulfate, 2-5 g / L of modified boron nitride and the balance of deionized water. S2, an alloy steel lining plate A is taken, the surface of the alloy steel lining plate A is plated with a transition metal boride layer through arc ion plating, the transition metal boride layer serves as a plating layer B, and an alloy steel lining plate B is obtained; and S3, the alloy steel lining plate B is taken, boronizing is conducted after annealing, and the high-wear-resistance alloy steel lining plate is obtained.

The invention discloses a hydrophobic diamond-like carbon coating and a preparation method thereof. The hydrophobic diamond-like carbon coating comprises a transition layer and an F-DLC layer. The preparation method comprises the following steps: S1, cleaning the substrate; s2, the coating chamber is vacuumized and heated, and the coating chamber and the base body are baked; s3, carrying out ion etching cleaning on the surface of the substrate; s4, after etching is completed, a Cr layer or a Ti layer is deposited on the surface of the base body in a magnetron sputtering mode to serve as a transition layer; and S5, inert gas and carbon tetrafluoride are introduced, the graphite target is started, and the F-DLC layer is deposited in an arc ion plating mode. Wherein in the step S5, the ratio of the introduced inert gas to the carbon tetrafluoride is 1: 0.3-1: 4, the cavity pressure of the coating cavity is 0.1-5.0 Pa, the bias voltage of the substrate is 20-800 V, and the target current of the graphite target is 20-400 A. The hydrophobic diamond-like coating is prepared in an electric arc ion plating mode, the characteristics that the target material particle energy is improved, the deposition rate is high, and the film layer compactness is good are achieved, and the prepared coating is better in hydrophobic angle and excellent in anti-sticking performance.

The invention discloses an AlCrN / AlCrSiWN nano multilayer composite coating with ultrahigh hardness and a preparation process of the AlCrN / AlCrSiWN nano multilayer composite coating, and belongs to the technical field of material surface coatings. The composite coating comprises an AlCrN transition layer, an AlCrN / AlCrSiWN nano multilayer modulation coating and an AlCrSiWN functional layer which are sequentially deposited on a substrate, the AlCrN / AlCrSiWN nano multilayer modulation coating is formed by alternately overlapping AlCrN layers and AlCrSiWN layers, the modulation period is 5-200 nm, and the modulation ratio of the AlCrSiWN layers to the AlCrN layers is 1: (1.5-5). The coating is prepared by adopting an arc ion plating technology. According to the preparation method, the AlCrN / AlCrSiWN nano multilayer composite coating with ultrahigh hardness is prepared by alternately depositing the AlCrSiWN coating and the AlCrN coating, and the hardness and the toughness of the coating are synchronously improved.

The invention discloses a preparation method of a fuel cell metal bipolar plate composite coating. The preparation method comprises the following steps: carrying out pretreatment and plasma cleaning on a substrate; sequentially depositing a metal base layer and a transition layer on the surface of the substrate; the amorphous carbon surface layer is deposited on the surface of the transition layer through multi-arc ion plating, the multi-arc ion plating technology is used, the high-density and high-strength amorphous carbon surface layer is formed on the surface of the metal bipolar plate, the corrosion resistance of the bipolar plate is remarkably improved, the machining parameters of multi-arc ion plating are accurately controlled, and the corrosion resistance of the bipolar plate is improved. A carbon surface layer with fine grains and few defects can be prepared on the surface of the bipolar plate, the corrosion current density is effectively reduced, and the service life of a fuel cell is prolonged.

The invention discloses a super-lubricating and corrosion-resistant DLC (diamond-like carbon) protective coating and a preparation method thereof, and belongs to the technical field of protective coatings. The coating is prepared on a base body through magnetron sputtering and magnetic filtering arc ion plating processes, a multi-layer composite structure is formed by doping transition metal elements and non-metal elements, and the multi-layer composite structure comprises a cleaning modification layer, a gradient transition layer, a combination strengthening layer, a main functional layer and a surface lubricating layer. Through element doping, the internal stress of the DLC coating is effectively reduced, the surface lubricity is enhanced, the bonding strength of the coating and a matrix is improved, and meanwhile the high hardness and excellent wear resistance of the DLC coating are reserved. In addition, the preparation process is simple, is suitable for industrial production, and can be widely applied to surface protection in the fields of molds, automobiles, aerospace and the like.

The invention discloses a vacuum ion coating device capable of uniformly coating, and relates to the technical field of coating devices, the vacuum ion coating device comprises a support plate, the upper end of the support plate is provided with a vacuum coating device main body, and one side of the vacuum coating device main body is provided with a protective door; according to the vacuum ion coating device, when the inner wall of the vacuum coating device body needs to be cleaned, the output end of the lifting motor drives the lifting screw rod to rotate along the interior of the threaded hole, so that the lifting frame drives the rotating seat to descend, and in the descending process, the inner wall of the vacuum coating device body is cleaned. The output end of a first rotating motor drives a rotating gear to be engaged along the interior of a tooth groove, so that the tooth groove drives a rotating seat to rotate, and meanwhile, a cleaning brush is driven to rotate along the inner wall of the vacuum coating device main body, so that the interior of the vacuum coating device main body is rotationally cleaned; and manual cleaning of the interior of the vacuum coating device body is not needed, time and labor are saved, and the cleaning efficiency is improved.

The invention discloses a rubber tapping machine blade, a preparation method thereof and an automatic rubber tapping machine, and relates to the technical field of natural rubber tapping. The rubber tapping machine blade comprises a blade base body, a bonding layer, a transition layer and a functional layer, the bonding layer, the transition layer and the functional layer are sequentially arranged on the surface of the blade base body, the bonding layer is a TiAlN coating, the transition layer is a TiSiN coating, and the functional layer is a TiBC coating or a TiBCN coating; wherein the content of C in the TiBC coating is greater than 0 at.% and less than 20 at.%; the content of C in the TiBCN coating is larger than 0 at.% and smaller than 20 at.%, and the content of N in the TiBCN coating is larger than 0 at.% and smaller than 10 at.%. The bonding layer, the transition layer and the functional layer can be prepared through arc ion plating; the rubber tapping machine blade is excellent in abrasion resistance, corrosion resistance, hydrophobicity and sharpness retentivity, low in friction coefficient and suitable for the automatic rubber tapping machine, the sharpness retentivity of the automatic rubber tapping machine blade can be effectively improved through the composite coating, the service life of the automatic rubber tapping machine blade can be effectively prolonged, and the rubber tapping effect of the automatic rubber tapping machine can be effectively improved.

A vacuum induction melting (VIM) furnace and method of using. A VIM is configured for use with metal-containing carbon powders. In operation, the metal-containing carbon powders are formed into a pellet so as to minimize or eliminate ejection of material during introduction of the pellet into the VIM processor. The VIM processor may be substituted or used in combination with a vacuum arc melt processing apparatus, an electron beam melt furnace, an ion plating furnace, a plasma flame source, a smelter, a traditional metal-metal melt furnace, or any equivalent. Pelletizing can be accomplished through use of a press or through application of any pelletizing technique and / or use of any apparatus that is able to generate pellets that have sufficient mass to avoid ejection from a VIM processor.

The invention discloses a thermal barrier coating resistant to high-temperature oxidation and a preparation method thereof, and relates to the technical field of thermal barrier coating materials. According to the preparation method, a NiCoCrAlYHfRu coated coating is prepared on a high-temperature alloy by adopting arc ion plating equipment, and a YSZ / LaZrCeO ceramic surface layer is prepared by adopting electron beam physical vapor deposition equipment. The thermal barrier coating prepared through the technology has a unique columnar crystal structure and meanwhile has good thermal cycle performance. Finally, the anti-oxidation and anti-corrosion requirements of the turbine blade can be met; and the process is simple, industrial production is easy to achieve, and the composite coating is excellent in performance, has application prospects and is suitable for the high-temperature alloy.

The invention discloses a household cutter with an arc ion plating coating and an edging method of the household cutter, and relates to the technical field of household cutters. Hard coatings are deposited on the two sides of the cutting edge of the household cutter through arc ion plating, and part or all of the hard coatings on one side of the cutting edge are removed through grinding, so that single-side sharpening of the cutting edge of the household cutter subjected to film plating is achieved, the sharpness and the sharpness retentivity of the cutting edge of the household cutter subjected to arc ion film plating are improved, and the service life of the household cutter is prolonged. Meanwhile, by removing part or all of the sub-coatings, the physical properties of the two sides of the cutting edge can be different, and the cutting performance of the household cutter is improved.

The invention relates to the technical field of metal material surface treatment, in particular to a method for improving the performance of a zirconium alloy Cr coating and a method for detecting the performance of the Cr coating, and the method for improving the performance of the zirconium alloy Cr coating comprises the steps that the surface of a zirconium alloy matrix is polished; the method comprises the following steps: cleaning a zirconium alloy matrix by using high-energy ions formed by evaporation and ionization of an arc discharge target material, depositing a base coat, and depositing a Cr coating on the zirconium alloy matrix by using a multi-arc ion plating technology; and carrying out high-temperature annealing heat treatment on the Cr coating. According to the method, the cracking resistance and the interface bonding performance of the Cr coating can be effectively improved. The method for detecting the performance of the Cr coating comprises the following steps: preparing a zirconium alloy matrix sample of the Cr coating which contains a base coat and is subjected to heat treatment; preparing a zirconium alloy matrix sample which does not contain a base coat and is not subjected to heat treatment of a Cr coating; preparing a zirconium alloy matrix sample containing a base coat and a Cr coating which is not subjected to heat treatment; and evaluating the toughness and cracking resistance of the Cr coating by comparing the initial strain of the first crack and the saturated crack density of each Cr coating sample.

The invention relates to the technical field of cutter coatings and surface coatings, in particular to a high-temperature self-lubricating wear-resistant nano-composite oxynitride coating and a preparation method and application thereof.The coating is prepared through the multi-arc ion plating technology, and the preparation method comprises the steps that Ar < + > ion bombardment, Cr < + > ion implantation and CrN transition layer deposition are sequentially conducted on a base body; and finally, by changing the partial pressure of oxygen in the mixed gas in the chamber, the AlCrVSiON functional coatings with different oxygen contents are deposited. According to the invention, V is added into the AlCrSiN coating, so that the coating generates a Magneli phase under high temperature or friction to form a self-lubricating layer, the friction coefficient is effectively reduced, and the friction performance is improved. Meanwhile, due to the addition of the element O, the coating has good high-temperature oxidation resistance and stable high-temperature mechanical property, and the defects that the mechanical property is reduced and the wear rate is increased due to coating oxidation at high temperature are overcome, so that the coating can be applied to the field of high-temperature cutting.

The invention relates to the technical field of die-casting die surface treatment, in particular to a high-temperature protection composite coating for a die-casting die and a preparation method and application of the high-temperature protection composite coating. The composite coating sequentially comprises a nitrogenous diffusion layer, a Cr bonding layer, a CrN transition layer and an AlCrWSiN working layer from a die base body to the surface. The nitride composite coating with the element content in continuous gradient change is efficiently prepared through the arc ion plating multi-target co-deposition technology, the high-temperature protective coating material suitable for the aluminum alloy die-casting die is rapidly screened out, the high hardness, high abrasion resistance and excellent molten aluminum corrosion resistance of the surface of the die-casting die are effectively improved, and the research and development efficiency is improved. The method is simple, controllable, good in repeatability, high in practicability and capable of being applied to the field of aluminum alloy die-casting dies.

The utility model relates to an arc ion plating device, which belongs to the field of arc ion plating and comprises a base and a plating chamber fixedly connected to the upper surface of the base, and an auxiliary structure for assisting in plating is arranged on the upper surface of the base. The auxiliary structure comprises a mounting groove formed in the upper surface of the base, a servo motor fixedly connected to the inner bottom wall of the mounting groove, a rotating rod fixedly connected to an output shaft of the servo motor, a supporting disc fixedly connected to the top end of the rotating rod, a positioning assembly arranged on the upper surface of the supporting disc and a containing disc. According to the arc ion plating device, continuous and stable rotation of the workpiece in the plating chamber is realized through the auxiliary structure, and the rotation mechanism ensures that an ion beam can uniformly bombard the surface of the workpiece at different angles and directions, so that the problems of non-uniform plating thickness, performance difference and the like caused by the fact that the workpiece is fixed in a traditional device are solved; and through rotary coating, the uniformity of the coating is improved, and the quality and consistency of the coating are also remarkably improved.

The invention discloses a NiCoCrAlYHfRe coating for Ni-based high-temperature alloy and a preparation method of the NiCoCrAlYHfRe coating, and belongs to the technical field of high-temperature protective coatings. The NiCoCrAlYHfRe coating is deposited on the Ni-based high-temperature alloy matrix by adopting an arc ion plating technology and a vacuum annealing treatment method. Compared with a traditional MCrAlY (M = Ni / Co) high-temperature protective coating, active elements Hf and Re are added into the coating, stripping of an oxidation film can be effectively delayed, the high-temperature oxidation resistance of the coating is improved, and therefore the service life of the coating is effectively prolonged. The NiCoCrAlYHfRe coating disclosed by the invention is simple in preparation process, controllable in component, good in repeatability and easy to realize industrial popularization.

The invention belongs to the technical field of hard alloy material preparation, and relates to a high-hardness and high-strength hard alloy coating blade which comprises a base body and a coating. The matrix raw materials comprise the following components in percentage by weight: 89-90% of tungsten carbide WC, 6-7% of Co, 1-3% of a tungsten-titanium solid solution and 1-3% of a tantalum-niobium solid solution; the coating comprises an AlTiN substrate layer, a TiAlSiN functional layer and a TiSiN surface layer. The high-hardness and high-strength hard alloy matrix is prepared by adding the reinforcing solvent, and the coating with the specific gradient composite structure is deposited by combining the arc ion plating technology, so that the internal defects of the coating are reduced, the internal stress of the coating is reduced, the toughness and the film-substrate binding force of the coating are improved, and the coating is uniform and compact, has high hardness and high-temperature oxidation resistance, and can be applied to the field of high-temperature-resistant coating. The service life of the blade is greatly prolonged through good matching of the coating and the blade base body.

The invention discloses a wear-resistant cutter coating, and relates to the technical field of surface coatings. The wear-resistant cutter coating is an organic whole composed of an AlCrBN sub-layer connected with a cutter substrate, a sub-layer of a TiAlN / AlCrBN nano-multilayer structure in the middle and a sub-layer of a TiAlSiN / AlCrBN nano-multilayer structure on the outermost layer, and the AlCrBN sub-layer, the sub-layer, the sub-layer and the sub-layer are sequentially prepared through an arc ion plating method. And the coating is firmly combined with the TiCN-based metal ceramic and hard alloy material tool substrate. The wear-resistant cutter coating is high in hardness, good in toughness and excellent in wear resistance, and can be used for cutting machining of high-strength alloy steel, high-temperature alloy and other difficult-to-machine materials.

The invention discloses a preparation process of an ultra-high hardness AlCrN / AlCrSiWN nano multilayer composite coating, and belongs to the technical field of material surface coatings. The process is carried out by adopting an arc ion plating technology and specifically comprises the following steps: (1) respectively placing an AlCrSiW target and an AlCr target on corresponding cathode target positions; vacuumizing until the vacuum degree is 3.0 * 10 <-3 > Pa or above; (2) bombardment etching is carried out on the substrate; (3) depositing an AlCrN transition layer; (4) depositing an AlCrN / AlCrSiWN nano multi-layer modulation coating layer; and (5) depositing an AlCrSiWN functional layer. According to the preparation method, the AlCrSiWN coating and the AlCrN coating are alternately deposited, so that the AlCrN / AlCrSiWN nano multilayer composite coating with ultrahigh hardness is prepared, and the hardness and the toughness of the coating are synchronously improved. And a breakthrough solution is provided for meeting high-end requirements in the field of surface strengthening of precision cutters and molds.

The invention provides a method for preventing laser from burning a steel wire in screen printing plate manufacturing, and relates to the technical field of screen printing plate manufacturing. Comprising the following steps: stretching a net: stretching a net cloth according to a preset tension and fixing the net cloth on a net frame; degreasing: putting the screen printing plate into an automatic cleaning machine, cleaning the surface of the steel wire mesh, and drying; film plating: putting the screen into a film plating machine, and plating an anti-laser material on the surface of a steel wire on the printing surface of the screen; film pasting, wherein a PI film and the screen printing plate plated with the anti-laser material are subjected to hot-pressing pasting; and manufacturing a printed pattern: obtaining the printed pattern in a laser etching mode. According to the invention, a layer of anti-laser material is plated or sprayed on the steel wire mesh, so that the burning degree of laser to steel wires in the laser cutting process is reduced, and the service life of the screen printing plate is prolonged. The anti-laser material can be, but not limited to, nickel, chromium, tungsten, cobalt, titanium, ceramic and the like, and is plated on the surface of the steel wire mesh by means of electroplating, vacuum plating, ion plating, ion spraying and the like.

The present invention discloses a vacuum ion coating device capable of uniformly coating films, which relates to the technical field of coating devices and includes a support plate. A vacuum coating device main body is arranged at the upper end of the support plate, and a protective door is arranged on one side of the vacuum coating device main body; in the vacuum ion coating device of this design, when the inner wall of the vacuum coating device main body needs to be cleaned, the output end of the lifting motor drives the lifting screw rod to rotate along the inside of the threaded hole, so that the lifting frame drives the rotating seat to descend. During the descending process, the output end of the first rotating motor drives the rotating gear to engage along the inside of the tooth groove, so that the tooth groove drives the rotating seat to rotate, and at the same time drives the cleaning brush to rotate along the inner wall of the vacuum coating device main body, thereby rotating and cleaning the inside of the vacuum coating device main body. There is no need for manual cleaning of the inside of the vacuum coating device main body, which saves time and effort and improves the cleaning efficiency.

The invention provides a high-hardness and scratch-resistant antireflection film and a preparation method thereof. The high-hardness and scratch-resistant antireflection film comprises a substrate, a metal aluminum transition layer, a Ta2O5 / inner DLC / AlOxNy alternating layer and an outer DLC layer, wherein the number of alternate layers is 10-20, the thickness of the metal aluminum transition layer is 100-120 nm, the thickness of the Ta2O5 layer is 40-50 nm, the thickness of the AlOxNy layer is 50-60 nm, the thickness of the inner DLC layer is 20-30 nm, and the thickness of the outer DLC layer is 80-90 nm; the average light transmittance of the antireflection film is greater than 98.6% within the range of 2-16 [mu] m, the refractive index is 1.37-1.41, and the nano hardness is 35-45 GPa. Multifunctional ion plating equipment is adopted, different process conditions are controlled according to the properties of the film layers, and preparation of all the layers is continuously and sequentially completed. The prepared antireflection film has excellent light transmission and low refractive index, the hardness and scratch resistance are also remarkably improved, and the service life of electronic equipment can be greatly prolonged.

The invention provides a breaking hammer piston and a preparation method applying arc ion plating, and belongs to the technical field of breaking hammers. The technical problems that an existing piston is poor in friction resistance, prone to abrasion in the working process, short in service life and the like are solved. The outer surface of a piston body in the breaking hammer piston is wholly or partially provided with a strengthened coating, the strengthened coating comprises a hard layer and a bonding layer, the bonding layer is connected with the piston body, the hard layer is located on the outer side of the bonding layer, the hard layer is a CrN layer or a WC layer or a WN layer or a CrNiN layer or a CrAlN layer or a CrAlNiN layer or a CrAlW layer, and the bonding layer is a Cr layer or a Ti layer or a TiN layer or a CrN layer. The preparation method comprises the steps of piston pretreatment, vacuum chamber glow cleaning, bonding layer implantation, surface hard layer deposition, post-treatment, cooling and the like. The friction-resistant rubber has the advantages of being better in friction resistance, longer in service life and the like.

The invention relates to the technical field of medical instruments for treating aneurysm, and particularly discloses a vascular spring ring and a coating preparation process thereof. The preparation process of the coating of the vascular spring ring comprises the following steps: S1, taking a tungsten filament, and cleaning the tungsten filament; and S2, the tungsten filament is etched through ion plating. And S3, the surface of the tungsten filament is cleaned through titanium ions, a titanium layer is deposited on the surface of the tungsten filament, and the thickness of the titanium layer is 0.015-0.025 microns. And S4, a gold layer is deposited on the surface of the titanium layer, the thickness of the gold layer is 0.15-0.25 [mu] m, and the raw material wire is obtained. And S5, the raw material wire is manufactured and formed, and the vascular spring ring is obtained. In the process, the tungsten filament is etched through ion plating, so that the surface roughness is improved, and the adhesive force of a subsequent coating is enhanced. And titanium ion cleaning is carried out, and ion plating etching residues are removed. And the thin titanium layer enhances the adhesive force of the pure gold layer. Due to the outermost gold layer, the vascular spring ring has good biocompatibility and corrosion resistance.

The invention provides a method for in-situ plating of a high-thickness wear-resistant Cr coating on the inner wall of a large-caliber artillery barrel, and belongs to the technical field of hard coating preparation, the surface of the inner bore of the artillery barrel is plated with the high-thickness wear-resistant Cr coating in situ by adopting a pulse multi-arc ion plating technology, and the high-thickness wear-resistant Cr coating is formed by long-period circulating coating of the Cr coating. Finally, the high-thickness wear-resistant Cr coating is obtained on the inner wall of the large-caliber artillery barrel in situ, the final thickness of the high-thickness wear-resistant Cr coating is 30-50 microns, the prepared wear-resistant Cr coating can improve the film-substrate bonding strength, the performance of the Cr coating is further improved, and the requirement for the performance of an artillery barrel inner cavity in military affairs is met.