460results about "Electrolytic coatings" patented technology

The invention relates to the field of metal surface treatment, and discloses an efficient electroplating process for a cotton picker spindle and an electroplating liquid formula, the efficient electroplating process comprises the following steps: step 1, substrate pretreatment: sequentially carrying out alkali washing, acid washing and plasma activation on the spindle; step 2, preparing an electroplating solution: dissolving nickel sulfate, sodium hypophosphite, a composite nano additive and a complexing agent in water, and adjusting the pH value to 4.8-5.3; step 3, gradient pulse electroplating: carrying out pulse electroplating in three stages, including bottom layer deposition, transition layer deposition and composite layer deposition; 4, post-treatment is conducted, specifically, silane sealing and curing are conducted on the plating layer; the base body pretreatment in the first step comprises the following sub-steps of alkali washing and oil removal, wherein the picking ingot is soaked in a NaOH solution with the concentration being 45-55 g / L. According to the method, high-density hydroxyl active sites are constructed on the surface of the metal base material through a plasma activation process, strong chemical bonding is formed between a plating layer and the base material, and the interface bonding strength is remarkably improved.

The present invention discloses a Ni‑Se‑C hydrogen evolution electrode and a preparation method thereof, belonging to the technical field of electrocatalytic hydrogen evolution. The Ni‑Se‑C hydrogen evolution electrode is composed of a conductive substrate and a Ni‑Se‑C coating electroplated on the surface of the conductive substrate. First, the conductive substrate is pretreated in the present invention; then, Ni, Se, and C elements are deposited on the pretreated conductive substrate by electroplating to form a Ni‑Se‑C hydrogen evolution electrode with excellent hydrogen evolution performance. The synthesis method of the present invention is simple and the catalytic layer structure is stable. The synthesized Ni‑Se‑C hydrogen evolution electrode can be widely applied to the industrial production of hydrogen by electrolyzing water, and has significant practical value and economic value.

The invention relates to the technical field of substrate material surface plating, in particular to a method for electrochemical plating of a perovskite thin film through an ionic electrolyte, and the method comprises the following steps: S1, preparing the ionic electrolyte containing a double-complexing agent system and a two-dimensional nano filler; s2, the ion electrolyte and the substrate are placed in a rotating magnetic field for a pulse electrodeposition process, and ultrasonic waves are applied to the bottom of the rotating magnetic field; s3, adopting an asymmetric third-order pulse waveform in the pulse electrodeposition process; s4, in the pulse electrodeposition process, synchronizing terahertz time-domain spectroscopy and confocal Raman imaging to monitor grain boundary defects of the deposition layer; and S5, entering an annealing stage after the process is ended, and introducing pyrrolidone steam to form a C-N bond passivation layer. According to the method, the ion electrolyte containing the specific double complexing agent system and the two-dimensional nano filler is accurately prepared, so that the uniformity and efficiency of the plating process are improved, and the stability of the ion electrolyte is ensured.

The invention discloses high-strength stainless steel for a wheel hub cover and a machining process of the high-strength stainless steel, and relates to the technical field of stainless steel machining. The specific processing technology comprises the following steps: weighing a stainless steel raw material, smelting under nitrogen pressurization, carrying out protective pouring to obtain a cast ingot, carrying out hot forging and hot rolling to obtain a hot-rolled plate, carrying out solution treatment and water quenching, sequentially carrying out multi-pass cold rolling and single-pass liquid nitrogen heat preservation cold rolling, annealing and aging treatment to obtain a stainless steel base material, and sequentially carrying out grinding, polishing, oil removal and acid activation to obtain the stainless steel plate. And then placing in an electroplating solution for electro-deposition of an alloy plating layer, cleaning after electro-deposition is finished, then carrying out laser cladding, finally carrying out heat treatment, and cutting a thin layer to obtain the high-strength stainless steel. Wherein cladding powder adopted for laser cladding comprises cobalt powder, chromium powder, nickel powder, aluminum powder, molybdenum powder, titanium powder, zirconium powder, nano carbon-nitrogen metal and tungsten carbide.

The invention discloses a terminal and a terminal manufacturing method. The terminal comprises a terminal body which is provided with a matching part used for being matched with a matching terminal. A first bottom plating layer and a first silver graphite plating layer formed on the first bottom plating layer are formed on the contact surface of the matching part of the terminal body. Graphite particles are uniformly dispersed in the first silver graphite plating layer, so that the wear resistance and the conductivity of the matching part of the terminal body are improved. According to the invention, the silver graphite plating layer has excellent wear resistance and conductivity, can greatly improve the matching times of the terminal and the matching terminal, and can reduce the plugging resistance between the terminal and the matching terminal.

The invention discloses an electroplated part, an electroplated part manufacturing method and a connector. The electroplated part comprises a base material; a nickel plating layer formed on the surface of the base material; the tin-graphite composite plating layer is formed on the nickel plating layer; the nickel plating layer is formed on the base material, the tin-graphite composite plating layer is formed on the nickel plating layer, the tin plating layer is formed on the tin-graphite composite plating layer, the nickel plating layer serves as a bottom plating layer of the base material, the tin plating layer serves as an outer plating layer of the base material, and the tin-graphite composite plating layer serves as a middle plating layer of the base material. According to the invention, the graphite particles exposed from the tin-graphite composite coating are partially or completely wrapped by the outermost tin coating, so that the graphite particles are not easy to fall off, the wear resistance and corrosion resistance of the electroplated part are improved, and the service life of the electroplated part is prolonged. In addition, the plating layer structure also has a relatively low friction coefficient, so that the insertion and extraction force of the electroplated part in the use process can be greatly reduced.

The invention belongs to the technical field of grinding materials and grinding tools, and particularly relates to a diamond electroplated grinding wheel directionally arranged in a magnetic field and a preparation method and application thereof. Firstly, electroplating liquid is added into an electroplating bath, then 30%-40% of magnetic diamond abrasive materials are added into the electroplating liquid, directional magnetic sanding is carried out with the grinding wheel base body A as a cathode and a nickel plate as an anode, the magnetic field intensity is controlled to be 0.1-1 T, the cathode current density is controlled to be 0.4 A / dm < 2 >-0.6 A / dm < 2 >, the electroplating time is 10-20 min, and a grinding wheel base body B is obtained; removing floating sand from the grinding wheel base body B to obtain a grinding wheel base body C; and the grinding wheel base body C is thickened to obtain a grinding wheel base body D, and the grinding wheel base body D is modified to obtain the grinding wheel. The grinding rate of the manufactured grinding wheel is reduced by 10%-25%, the service life is prolonged by 30%-50%, the machined surface roughness (Ra) can reach 0.3 micrometer or below, and the machined surface precision is reduced by 10%-25%. The grinding wheel is applied to nanoscale grinding of optical glass, sapphire and silicon carbide wafers and forming machining of turbine blade mortises and ceramic matrix composites, and the precision and roughness of the grinding wheel can be effectively guaranteed.

The present invention relates to a method of preparing a composite material, in particular one useful as a catalyst in an electrolytic hydrogen evolution reaction and / or the oxygen evolution reaction and / or urea oxidation-assisted water electrolysis. Provided is a method of preparing a composite material, the method comprising the steps of: (i) electrochemically depositing material onto a substrate from a deposition solution comprising a nickel (II) salt and graphene oxide, to obtain a nickel-reduced graphene oxide composite material comprising nickel dispersed on reduced graphene oxide, said composite material being deposited on the substrate; (ii) after step (i), placing the substrate, having the nickel-reduced graphene oxide composite deposited thereon, in an alkaline solution along with a counter electrode; and (iii) after step (ii), partially electrochemically oxidising the nickel, to obtain a partially oxidised nickel-reduced graphene oxide composite material comprising partially oxidised nickel dispersed on reduced graphene oxide, said composite material being deposited on the substrate. The composite of the invention demonstrates high catalytic activity for electrolytic hydrogen production under alkaline water electrolysis conditions (for example, a hydrogen evolution current of up to 500 mA cm-2 at -1.35 V against a Reversible Hydrogen Electrode). High activity is demonstrated even when the substrate (on which the composite is deposited) does not contain any, or at most trace amounts, of nickel. Thus, the electrode of the invention (that is, the combination of composite material and substrate) demonstrates higher catalytic activity per unit mass of nickel compared to previous electrodes based on nickel foam. The invention also provides a composite material, an electrode, a method of electrolytic hydrogen and / or production under alkaline electrolysis conditions, and a method of electrolytic urea oxidation under urea oxidation-assisted water electrolysis conditions, thereof.

The invention provides a pulse-direct current electrochemistry composite deposition process of a nickel-tungsten-phosphorus alloy coating, and belongs to the technical field of coating preparation, and the pulse-direct current electrochemistry composite deposition process comprises the following steps: carrying out silane coupling agent modification treatment on alpha-aluminum oxide; carrying out modification treatment on the hexagonal boron nitride nanosheet by adopting hexadecyl trimethyl ammonium bromide; carrying out polyacrylic acid modification treatment on the nano silicon dioxide; nickel salt, tungsten salt, phosphorus salt, a complexing agent, a buffering agent, a primary brightener, a secondary brightener, a wetting agent, modified aluminum oxide, modified boron nitride, modified silicon dioxide and deionized water are mixed, stirred and heated, and a composite plating solution is obtained; the substrate serves as a cathode, pulse current is applied to the substrate for pulse electroplating, then the current density of the pulse current is continuously and linearly reduced to a target value, and finally direct current electroplating is conducted under the target value; by optimizing the formula of the composite plating solution and the pulse-direct current composite electroplating process, the nickel-tungsten-phosphorus alloy composite plating layer with high hardness, low friction, high wear resistance and corrosion resistance is finally obtained.

The invention relates to the technical field of new energy material and electrochemical device manufacturing, and discloses a graphene-based functional nano-composite electrode preparation system based on AI parameter optimization, which integrates physical modules such as intelligent material supply, synthesis modification, slurry forming, post-treatment and the like with online characterization equipment into a whole. And closed-loop control is realized through the central AI optimization unit. And the central AI unit establishes a prediction model of process parameters and electrode performance by utilizing a deep neural network, reversely optimizes the process parameters according to performance requirements by adopting a multi-target optimization algorithm, and drives a system to iteratively execute a'preparation-test-optimization 'cycle until a high-performance electrode meeting a target is obtained. According to the method, automatic, accurate and efficient reverse design from performance requirements to process parameters is achieved, the problems that a traditional preparation method depends on experience and is low in efficiency and poor in repeatability are solved, and the research and development efficiency and the product performance limit of the electrode material are remarkably improved.

The invention belongs to the technical field of metal material plating, and particularly relates to a connector surface composite coating and a preparation process thereof, and the preparation process comprises the following steps: adding modified carbon black and sodium molybdate into deionized water, stirring to obtain a corrosion inhibition material, and mixing with modified zinc oxide to obtain a mixed filler; the preparation method comprises the following steps: adding dibutyltin dilaurate and toluene diisocynate into polypropylene glycol to obtain a core material; adding hexadecyl trimethyl ammonium bromide and the mixed filler into a 93-96 wt% ethanol solution, adding the core material for emulsification, adding an isophorone diisocyanate solution, and stirring to obtain a microcapsule; nickel sulfate hexahydrate, nickel chloride hexahydrate, sodium citrate, boric acid, a surface dispersant, a sodium hydroxide solution and microcapsules are added into deionized water to be mixed, and an electroplating solution is obtained; and putting the connector into the electroplating solution for electroplating to obtain the composite coating. The expansion of pitting corrosion can be inhibited, and the long-term use reliability and stability of the connector in a marine environment are improved.

The invention discloses a porous copper-graphene composite current collector for a lithium battery, and also discloses a preparation method of the composite current collector, and the preparation method comprises the following steps: preparing an electroplating copper electrolyte, adding graphene into the electroplating copper electrolyte, and uniformly dispersing the graphene to obtain an electroplating copper-graphene electrolyte; placing a copper foil in the electrocoppering-graphene electrolyte for electroplating treatment to obtain a Cu-Gr foil of which the surface is uniformly coated with a copper-graphene composite layer; the Cu-Gr foil is placed in an electrogalvanizing electrolyte for electrogalvanizing treatment, on the basis of the copper-graphene composite layer, a zinc layer is coated, and the Cu-Gr / Zn foil of a double-layer structure is obtained; carrying out solution treatment on the Cu-Gr / Zn foil to obtain a porous copper precursor; and carrying out dealloying treatment on the porous copper precursor, and dissolving zinc in the porous copper precursor to obtain the porous copper-graphene composite current collector. The composite current collector has a cross-scale synergistic distribution pore structure, and the binding force between the graphene and the copper substrate is strong.

The invention relates to a forming method for composite electroplating of an MEMS (Micro Electro Mechanical System) probe. Structural patterns of a needle tip or / and a needle body are / is photoetched through a micro-electro-mechanical process, the needle tip or / and the needle body is / are formed through electroplating of a composite plating solution after pretreatment, the composite plating solution is obtained by mixing a metal base solution and a turbid liquid, the metal base solution is a nickel base solution and / or a rhodium base solution, and the turbid liquid is a nickel base solution and / or a rhodium base solution. The suspension is formed by suspending nano-powder in water through a dispersing agent. Compared with the prior art, the technology provided by the invention has the following advantages that the MEMS process technology is combined with the composite plating solution to be used for various probe structures, and the performance of the prepared material is greatly improved compared with that of a pure metal coating; the composite plating solution prepared from the plating solution and the second-phase particles is high in stability, and the electroplating process is easy to operate; the nickel-based composite plating solution can be used for obtaining a main body material with higher hardness, better wear resistance and better flexural property; the rhodium-based composite plating solution is used for preparing a needle point material, has higher hardness and wear resistance, and improves the brittle fracture problem.

The utility model belongs to the technical field of diamond fretsaw machining, and particularly relates to electroplating equipment for diamond fretsaw machining, which comprises a bottom plate, a cleaning box, an electroplating device, an electroplating device and an electroplating device. The electroplating box is fixedly mounted at the top of the bottom plate, inlets and outlets are formed in the inner walls of the tops of the cleaning box and the electroplating box, and liquid outlets fixedly communicate with the rear sides of the cleaning box and the electroplating box; the number of the stand columns is two, and the bottom ends of the two stand columns are fixedly installed on the top of the bottom plate; the left end and the right end of the electric sliding rail are fixedly installed between the two stand columns respectively, switching between cleaning and electroplating of the diamond wire is achieved through a simple structure, manual operation transposition of personnel is not needed, meanwhile, drying operation after cleaning and electroplating of the diamond wire can be achieved, the drying efficiency is improved, and the working efficiency is improved. The machining process is high in automation degree, time-saving and labor-saving, and the electroplating efficiency and effect are greatly improved.

A blade (20) has an airfoil (22) having a tip (26). The blade (20) has a metallic substrate (80) and a coating system atop the substrate (80) at the tip (26). The coating system has: a first layer (110) of at least 99.0% weight nickel; an abrasive layer (114) having a matrix (118) and an abrasive (116) at least partially embedded in the matrix (118); and a second layer (112) between the first layer (110) and the matrix (118). The second layer (112) is tougher or more ductile than at least one of the first layer (110) and the matrix (118).

The invention provides diamond wire electroplating equipment, and relates to the technical field of diamond wire electroplating equipment.The diamond wire electroplating equipment comprises a base, a dismounting and mounting structure, a mounting structure and an adjusting structure, a frame is mounted on the upper surface of the base, two anode cell bodies are arranged in the frame, and the two anode cell bodies are connected with the frame through the mounting structure; a connecting frame and a fixing frame are installed on the upper surfaces of the two ends of the base correspondingly, conductive cathodes are installed at the upper ends of the connecting frame and the fixing frame correspondingly, an unwinding section roller system is installed at the end, away from the frame, of the connecting frame, and a circulating liquid storage box is installed at the end, away from the unwinding section roller system, of the base; a connecting frame is arranged at the end, away from the circulating liquid storage tank, of the base. The reel can be replaced quickly, the downtime of equipment can be greatly shortened, continuous operation of a production line is kept, and therefore the overall production efficiency is improved. Especially in a production environment in which reels need to be replaced frequently, reduction of downtime is crucial.

The invention belongs to the technical field of microbial protection and functional metal coating preparation, and particularly relates to a preparation method of a metal-based graphene oxide and zirconium oxide composite antibacterial coating on a flexible metal foil through magnetic field assisted jet electrodeposition. According to the method, a metal ion electroplating solution containing graphene oxide and zirconium oxide serves as a raw material on a flexible metal substrate, ferromagnetic particles are introduced to serve as a carrier, one-time forming is carried out under the action of a magnetic field through the scanning jet electrodeposition technology, and efficient fixing and uniform distribution of graphene oxide and zirconium oxide in a metal coating are achieved. The prepared coating is compact in structure and high in binding force, after the coating is in contact culture with escherichia coli and staphylococcus aureus for half an hour, the antibacterial rate reaches 94% or above, the antibacterial rate reaches 97% or above, and the coating has excellent stability and reliability. The method disclosed by the invention is simple and convenient in process and high in adaptability, can form a high-performance antibacterial coating on a flexible substrate, is suitable for the antifouling and anticorrosion fields of public health facilities, marine protection and engineering equipment, and has a wide industrial application prospect.

The application discloses a surface strengthening method suitable for low-temperature steel friction pairs of polar ship with complex configuration, and aims at solving the problems of insufficient surface wear resistance of the friction pairs and difficulty in surface strengthening in the existing polar ship with complex configuration.The surface strengthening method of the low-temperature steel friction pairs comprises the following steps: firstly, polishing and ultrasonic cleaning are conducted on the low-temperature steel friction pair materials; secondly, nano-diamond particle powder and spherical hard ceramic particles are mixed by ball milling; thirdly, a nickel-based plating solution is prepared; fourthly, supersonic particle bombardment treatment is conducted on the surface of the clean friction pair materials; fifthly, a nickel-based plating layer is prepared by adopting a chemical plating or brush plating process; sixthly, the step four and the step five are repeated for multiple times; seventhly, a composite plating solution is prepared; and eighthly, a self-lubricating coating is prepared.The application prepares a multilayer composite structure coating comprising a hardening layer, an alloy layer and a self-lubricating layer, the coating has good combination performance, high hardness and wear resistance, and is suitable for the low-temperature steel friction pairs of the polar ship with complex configuration.

The invention relates to the field of corrosion-resistant fasteners, in particular to a corrosion-resistant fastener and a preparation method thereof. The anti-corrosion fastener comprises a fastener body and an anti-corrosion layer, wherein the surface of the fastener body is sequentially coated with the anti-corrosion layer from inside to outside, and the anti-corrosion layer is a zinc-nickel alloy doped nanometer silicon carbide particle coating layer. The anti-corrosion layer is formed by doping zinc-nickel alloy with nano silicon carbide particles. As the zinc-nickel alloy is used as an electrochemical active material, through a cathode protection mechanism of a sacrificial anode, an oxidation reaction is carried out prior to a matrix metal, so that matrix corrosion is inhibited. Nano silicon carbide particles are introduced, the grain boundary defect of an alloy layer is filled through the physical dispersion strengthening effect, the porosity of the coating is reduced, and a compact physical barrier is formed to block corrosion medium permeation. Active protection of cathode protection and passive protection of physical barrier are combined to a single anticorrosive coating, and the function limitation of a traditional single coating is broken through.

Provided is a roughened copper foil capable of achieving both high adhesiveness with respect to a thermoplastic resin and exceptional high-frequency characteristics. The roughened copper foil has a roughened surface on at least one side thereof. In the roughened surface, the surface texture aspect ratio Str is 0.02-0.24, and the load area ratio Smr1 separating protruding peaks from a core portion is 1.0-15.0%. Str and Smr1 are values measured in compliance with ISO 25178 at a cutoff wavelength of 0.251 μm using an S-filter and at a cutoff wavelength of 4.5 μm using an L-filter.

The present invention relates to a metallic bipolar plate comprising a metal substrate and at least one layer of non-hydrogenated transition metal-doped diamond-like carbon (DLC) disposed on the metal substrate. The non-hydrogenated DLC comprises at least one transition metal selected from groups 4d, 5d, and 6d of the periodic table of elements, with a portion of the at least one transition metal present in the non-hydrogenated DLC in the form of a carbide of the at least one transition metal as a matrix. The non-hydrogenated transition metal-doped DLC has an indentation hardness of 35 GPa or more, preferably 40 GPa or more. Metal-doped DLC used as a coating for metallic bipolar plates in fuel cells and electrolyzers exhibits a longer life (>10,000 hours) and high corrosion resistance and low interfacial contact resistance even under severe operating conditions. Therefore, the present invention also relates to such uses, and to fuel cells, particularly proton exchange membrane fuel cells, and electrolyzers comprising such coated metallic bipolar plates. The present invention further provides a cathodic arc discharge deposition method for depositing a coating of non-hydrogenated DLC, preferably non-hydrogenated transition metal doped DLC, comprising at least one of the transition metals listed above.

The invention provides an online temperature control coordinated regulation and control method and system for diamond fretsaw electroplating baths, and relates to the technical field of process control over the temperature of the electroplating baths, and the method comprises the steps that the temperature of each electroplating bath and the flow rate of a plating solution are collected through a sensor, and the heat conduction strength is calculated in combination with the distance between the baths; determining a risk slot position according to the heat conduction intensity, marking the priority, and expanding to obtain an interfered slot position; packaging interference risk data through an instant sharing protocol, and transmitting and acquiring feedback information through a high-speed communication bus; correcting abnormal data, marking risk attributes to generate a temperature fluctuation vector, extracting peak value characteristics to obtain a production line wave and trend, and generating a linkage adjustment instruction sequence; kalman filtering is adopted to optimize instructions and distribute the instructions, and response delay is monitored; and if the delay exceeds the threshold value, classifying abnormal modes through a support vector machine to obtain a defect prediction label, and iteratively adjusting the current density and the pH value of the plating solution. The process defects caused by temperature fluctuation and delay are effectively avoided, and the stability of the electroplating process is guaranteed.

To provide: a plated film capable of preventing a surface shape increasing the surface area of the plated film from being degraded by a load; a composite film; a sliding component; a method for manufacturing the plated film; a method for manufacturing the composite film; and a method for manufacturing the sliding component.SOLUTION: A plated film 13 provided on the surface of a material 11 to be plated includes: a film part 14 including nickel or nickel alloy; and insulator or semiconductor inorganic compound particles 15 positioned in the inside of the film part 14. The surface of the film part 14 includes a smooth part 14A following the surface of the material 11 to be plated and a depression part 14B having a shape following at least a part of the appearance of the inorganic compound particle 15.SELECTED DRAWING: Figure 1

The present application mainly relates to the technical field of metal surface treatment, and particularly relates to a tin plating solution containing a matte tin plating additive and a preparation method thereof, which comprises 180ml / L of methyl sulfonic acid, 70ml / L of methyl sulfonic stannous acid and the matte tin plating additive, the matte tin plating additive comprises components with mass-volume concentrations as follows: 30-100g / L of a dispersant, 100-300g / L of an organic solvent, 0-10g / L of a grain refiner, 50-100g / L of a complexing agent, 5-10g / L of an antioxidant and water. The preparation of the matte tin plating additive comprises the following steps: step 100, adding water and the organic solvent into a reaction kettle and stirring; step 200, sequentially adding the dispersant, the grain refiner, the complexing agent and the antioxidant, and stirring for 2-5 hours to obtain the matte tin plating additive. In the present application, the combination of the dispersant and the refiner increases the gloss of the plating layer and improves the bonding force between the plating layer and the grain, and between the grains.

The invention provides a marine self-repairing anti-corrosion coating, and belongs to the technical field of anti-corrosion coatings, and the anti-corrosion coating is a nano composite coating formed in situ through an electrochemical co-deposition method; the anticorrosive coating comprises a continuous phase formed by polyaniline as a matrix material, polydopamine uniformly dispersed in the matrix material as an interface reinforcement phase, and a layered molybdenum disulfide-based functional nano material also dispersed in the matrix material as a functional filler, the layered molybdenum disulfide-based functional nano material is a molybdenum disulfide nanosheet with a 1T / 2H heterojunction structure, and the surface of the nanosheet is loaded with nanoscale cerium oxide particles or a molecular benzotriazole corrosion inhibitor through chemical modification. According to the invention, the problems of environmental pollution and insufficient stability of the existing anticorrosive coating and environmental problems caused by excessive addition of iron in the conventional Fenton reaction are solved.

The design of the present invention belongs to the technical field of metal surface anti-corrosion coatings, and specifically discloses a method for preparing a hydrogen-barrier coating and an anti-corrosion hydrogen-barrier composite coating at room temperature. The method adopts a room-temperature electric-assisted method to prepare a black oxide hydrogen-barrier coating, and then an organic resin is coated on the hydrogen-barrier coating to construct a double-layer composite coating. This composite coating has excellent hydrogen barrier properties and adhesion, and has long-term corrosion resistance. It can solve the problem that traditional single organic resin coatings do not have hydrogen barrier function and cannot provide long-term corrosion protection in hydrogen-related environments.

To provide a composite material with excellent abrasion resistance and heat resistance, in which a composite coating including carbon particles in a silver layer is formed on a raw material.SOLUTION: A composite material comprises a composite coating composed of a silver layer including carbon particles, which is formed on a raw material. The content of Sb in the composite coating is 1 mass% or less. A crystallite size of silver of the composite coating is 40 nm or less.SELECTED DRAWING: None

To provide a novel catalyst layer (CL) composition and a structure that provide excellent durability and sustained catalyst performance for contemplated large vehicle applications.SOLUTION: A CL composition and a structure include: an internal composition composed of binder-coated nanoparticles, binder-free catalyst nanoparticles, and regular electrical, ionic, gas, and liquid pathways; a multilayer structure with different packing densities between multiple sub-layers; and an external pattern of an outer surface of the CL. An improvement in CL durability and catalyst performance is achieved, and by using the CL of the present invention, a novel solid electrolytic plating process is demonstrated and a novel thin film coating catalyst product is obtained. The binder-coated nanoparticles function as interconnecting substrates or sites to which nanoparticles that are not coated on their binder-coated surface are adhesively attached, and achieve a regular structure in which the binder-free catalyst nanoparticles are consistently interspersed between the binder-coated nanoparticles and their aggregates.SELECTED DRAWING: Figure 2