6631results about "Superimposed coating process" patented technology

Provided is a high-strength steel sheet having excellent member strength, ductility, stretch flangeability, bendability of a shear end surface, and low-temperature toughness. A high-strength steel sheet having a prescribed component composition and a steel structure in which the area ratio of martensite is 10%-80%, the area ratio of bainite is 2%-70%, the area ratio of ferrite is 80% or less, and the area ratio of retained austenite is 15% or less at a position at 1 / 4 of the sheet thickness. The ratio of the number of martensite blocks in which metastable carbides are present relative to the number of martensite blocks is 2% or more, and the standard deviation [sigma] n of the nano-hardness relative to the average value [Hn] ave of the nano-hardness is 0.60 x [Hn] ave or less when the nano-hardness at 225 points or more is measured at a position of 1 / 4 of the sheet thickness.

The invention relates to a multi-layer composite black film and a preparation method thereof. The multi-layer composite black film is formed by sequentially stacking a base material layer, a multi-layer film system and a top covering layer, the multi-layer film system is formed by alternately stacking a plurality of absorption layers and a plurality of oxide layers, the number of the layers is 7-30, an initial layer is an oxide layer, the refractive indexes of the oxide layers are the same (1.4-1.5), the thickness ratio of the oxide layers to the absorption layers is larger than 2, and the thickness ratio of the top covering layer to the absorption layers is larger than 1. And the thicknesses of the two layers are increased and then reduced from the substrate layer to the top covering layer. A buffer layer with gradually changed oxygen content is arranged between the oxide layer and the absorption layer, and both the oxide layer and the top covering layer are made of silicon dioxide. The preparation method comprises the following steps: providing the substrate layer, alternately depositing the absorption layer and the oxide layer by using a magnetron sputtering or electron beam evaporation process to form a multilayer film system, then forming the top covering layer, controlling parameters such as vacuum degree, power, temperature and the like during deposition, and forming the buffer layer in the same cavity. The multilayer composite black film has the inner surface reflectivity of less than 1% and the appearance surface reflectivity of less than 5%, and is simple in structure and low in preparation cost.

Rods, pipes and internal cavities that include a coated surface are described. The rod or pipe can include an alloy layer on an external surface, an internal surface or both. The alloy layer can include molybdenum or tungsten and at least one element or at least one compound comprising one or more of nickel, cobalt, chromium, tin, phosphorous, iron, magnesium or boron.

The invention relates to the technical field of high polymer materials and preparation thereof, and discloses a wet anti-slip bionic friction pad on a glass surface, which is inspired by a micro-nano structure of toe pads of organisms such as tree frogs and long-horned grasshoppers with wet friction increasing characteristics, and a bulge array is added on the surface of a high-friction material, so that the friction coefficient of the friction pad is increased; the microstructure arrays can discharge a water film on the surface of the friction pad under the capillary action in a wet environment, and the effective contact area between solids is increased, so that the friction pad and a friction surface are always kept in a dry friction state, and stable friction force is ensured. The friction pad comprises a connecting layer, a supporting layer and a tail end protruding straight column array, a tail end contact layer is in a hexagonal straight column shape, the diameter of an inscribed circle of a hexagonal micro-column structure ranges from 5 micrometers to 5000 micrometers, column bodies are densely arranged in a hexagonal mode, the height of the column bodies ranges from 10 micrometers to 1500 micrometers, the tail ends of the column bodies are planes, the interval between every two column bodies ranges from 2 micrometers to 600 micrometers, and tight drainage grooves are formed.

Vapor deposition processes for forming thin films comprising molybdenum on a substrate are provide. In some embodiments the processes comprise a plurality of deposition cycles in which the substrate is separately contacted with a vapor phase molybdenum precursor comprising a molybdenum halide, a first reactant comprising CO, and a second reactant comprising H2. In some embodiments the thin film comprises MoC, Mo2C, or MoOC. In some embodiments the substrate is additionally contacted with a nitrogen reactant and a thin film comprising molybdenum, carbon and nitrogen is deposited, such as MoCN or MoOCN.

Provided herein are methods of filling features with metal including inhibition of metal nucleation. One aspect of the disclosure relates to a method including providing a substrate having a feature and field regions, wherein the feature is to be filled with metal, the feature including feature surfaces and a feature opening; performing an inhibition treatment to inhibit metal deposition on at least some of the feature surfaces; after performing the inhibition treatment, performing a first chemical vapor deposition (CVD) operation including exposing the feature to a metal precursor and hydrogen (H2); after performing the first CVD operation, performing a de-inhibition treatment to decrease inhibition; and after decreasing inhibition, performing a second CVD operation to deposit metal in the feature and / or on the field regions.

The invention relates to the technical field of alloy coatings, and discloses a laser cladding high-entropy alloy coating and a preparation method thereof.The laser cladding high-entropy alloy coating is prepared from, by mass, 25%-45% of Fe, 15%-25% of Cr, 10%-20% of Ni, 5%-15% of Mn, 3%-10% of Al, 0%-5% of Ti, 1%-5% of a nanometer reinforcing phase and 0.1%-0.5% of a flow promoter. Lorentz force generated by an alternating electromagnetic field drives melt convection, so that the diffusion coefficient of segregation-prone elements such as Cr and Ni is increased, the ultrasonic cavitation effect is matched to crush dendritic crystals and promote dispersion of nanoparticles, the segregation index of the elements is reduced, a uniform nanocrystalline-amorphous composite structure is formed through the synergistic effect, and uniform distribution of elements in a molten pool is achieved.

The invention relates to the technical field of composite copper foils, in particular to a production process of a multifunctional composite copper foil, the composite copper foil and application of the composite copper foil. The invention provides a production process of a multifunctional composite copper foil. The production process comprises the following steps: S1, baking a carrier layer; s2, performing surface treatment through plasma treatment; s3, coating a film on the baked carrier layer through magnetron sputtering to form a bottom layer; s4, evaporating a vacuum evaporation layer on the base layer through vacuum evaporation; s5, plating a copper layer on the vacuum evaporation layer through water electroplating; and S6, slitting the sample. According to the production process, by optimizing the baking conditions, the sputtering technology and the evaporation parameters and introducing the plasma surface treatment technology, the binding force of the copper film and the base material is improved, the pinhole rate is reduced, the production efficiency and the coating uniformity are remarkably improved, and the product quality is improved. The problems that in the existing composite copper foil production process, the binding force between a copper film and a base material is poor, the pinhole rate of the copper film is high, the deposition speed is low, and the coating uniformity is poor are solved.

The invention relates to an optical fiber hydrogen sensor based on a silver film-nanowire hole array structure and a preparation method thereof in the field of photochemical sensors. The optical fiber hydrogen sensor comprises a multimode optical fiber, and a sensing area is formed on the multimode optical fiber; the sensing area is formed by stripping a coating layer with a preset length from the multimode optical fiber, thinning the optical fiber in the area, plating a silver film on the surface of the thinned optical fiber, and adsorbing a nanowire hole array structure which is sequentially and vertically arranged on the surface of the silver film in a liquid level self-assembly manner; the nanowire hole array is of a metal-medium-metal (MIM) structure, a gold-palladium nanowire array is arranged at the bottom, an intermediate medium layer is made of aluminum oxide, and a silver film with a hole array in any shape is arranged at the top. When light is transmitted to a sensing area from a fiber core of the multimode optical fiber, the light and a metal silver film can excite a surface plasmon resonance (SPR) effect, meanwhile, an MIM structure formed by a gold-palladium nanowire, an aluminum oxide dielectric layer and a porous silver film serves as an optical coupling antenna through a local surface plasmon resonance (LSPR) effect at the edge of a top hole, and the optical coupling antenna is used for transmitting the light to the sensing area. Light energy is efficiently converged and excited in an extremely bound gap plasmon (Gap Plasmon) in an aluminum oxide dielectric layer, so that far-unconventional electromagnetic field enhancement is generated in a sensing core area, and the sensitivity of the sensor is greatly improved.

Nanomaterials and methods of preparation and use thereof, are disclosed. The nanomaterials include a non-noble metal substrate and noble metal atoms on a surface of the non-noble metal substrate. The noble metal atoms simultaneously coordinate with a halogen and oxygen. The substrate has a large specific surface area and a large electrochemical active area, and the surface coordination environment of the noble metal affects the electronic structure and catalytic activity of a resulting catalyst. The noble metal surface coordination structure may be regulated and controlled by a synthesis temperature, an alkalinity, a reaction time, and an electrodeposition voltage range. A hydroxide ion and the halogen coordinate with the noble metal, exhibiting an unsaturated pentacoordinate state. Doping the substrate with reducing metal ions may increase the loading capacity, anchor the noble metal atoms, and improve anodic oxygen evolution and cathodic hydrogen evolution in seawater electrolysis.

The invention relates to the technical field of metal surface protection, and discloses a corrosion-resistant self-repairing metal fastener and a preparation method thereof.The corrosion-resistant self-repairing metal fastener comprises a zinc alloy matrix, a nanometer passivation layer, a slow-release corrosion-resistant layer and a self-repairing functional layer, and the nanometer passivation layer, the slow-release corrosion-resistant layer and the self-repairing functional layer sequentially wrap the zinc alloy matrix; the zinc alloy matrix consists of Al, Cu, Mg, Ce and Zn; the nano passivation layer adopts zinc phosphate / silane composite sol to construct a Si-O-P covalent bond network, and plasma is combined to graft epoxy groups to enhance the interface bonding strength; the slow-release anti-corrosion layer is used for loading a pH response type benzotriazole derivative through gradient aperture mesoporous silica, so that the dynamic controlled release of a corrosion inhibitor is realized; the self-repairing functional layer adopts a synergistic effect of a mechanical triggering type sulfydryl siloxane microcapsule and a pH triggering type EDTA chelating agent microcapsule to form a physical plugging-chemical passivation dual-mode repairing mechanism. Through four-stage cooperation of matrix modification, interface strengthening, slow-release regulation and control and intelligent repair, the corrosion resistance of the corrosion-resistant self-repairing metal fastener in a complex environment is remarkably enhanced.

The invention relates to the technical field of motor rotors, and discloses a motor rotor and a machining method thereof.The method comprises the steps that hot forging is conducted on an alloy steel base material based on the preset forging and pressing temperature, and multi-layer gradient cutting is conducted on a rotor initial blank; the method comprises the following steps: performing composite deposition treatment on a cylindrical blank based on a magnetic material, placing the magnetic composite blank in a vacuum environment for dynamic heat treatment, performing dynamic balance finishing on the heat treatment blank based on a preset alloy, performing surface strengthening treatment on a balance rotor in a nitrogen atmosphere, and coating the balance rotor subjected to surface strengthening with a preset coating, the motor rotor with the optimized surface is obtained; and dynamic balance trimming is combined with preset alloy characteristics for microstructure regulation and control, and it is ensured that the rotor has excellent operation stability in a high-rotation-speed environment. And finally, surface strengthening treatment is carried out in a nitrogen atmosphere, and a functional coating is used for covering, so that the wear resistance and corrosion resistance of the surface layer are remarkably improved, and the requirements of a motor system on a high-performance rotor under complex working conditions are met.

The invention belongs to the technical field of medical materials, and relates to a titanium-based implant surface dual drug release system and a preparation method and application thereof. Comprising a titanium-based implant and a hydrogel layer attached to the surface of the titanium-based implant, the surface of the titanium-based implant is of a nanotube array structure, zinc oxide nanoparticles and up-conversion luminescent material particles are arranged between the titanium-based implant and the hydrogel layer, and MgO2 nanoparticles are loaded in the hydrogel layer; wherein the material of the up-conversion luminescent material particles is NaYF4: Yb < 3 + >, Er < 3 + >, and the hydrogel layer is composed of gelatin-sodium alginate hydrogel. The titanium-based implant surface dual-drug release system provided by the invention can realize loading of different drugs, can be used for treating various diseases, has a better time sequence control effect, is long in action time and low in cost, and has a wide application prospect.

The invention relates to the technical field of coatings, and discloses a product wear-resistant and corrosion-resistant remanufacturing process method based on laser deposition, which comprises the following steps: surface pretreatment: pretreating the substrate surface of a product to remove a surface oxide layer, oil stains and other impurities so as to improve the adhesive force of the coating; laser cladding coating preparation: a first wear-resistant coating is deposited on the surface of the pretreated matrix through a laser cladding process, and the wear-resistant coating is Fe-based or Co-based multi-component alloy powder; an ion deposition coating is prepared, specifically, a second corrosion-resistant coating is formed on the first coating through the ion deposition technology, and the corrosion-resistant coating is made of a ceramic material. Through the design of the functional gradient coating, the combination of the toughness of the inner layer and the hardness of the outer layer is realized, the wear resistance and the corrosion resistance are improved, the adhesive force is enhanced through metallurgical bonding, cracking and peeling are avoided, the residual stress is eliminated through low-temperature annealing and polishing, and the stability and the service life of the coating in a high-wear and high-corrosion environment are ensured.

The invention relates to the field of metal surface treatment, and discloses a multi-layer vacuum coating method for enhancing the surface of a high-precision metal part, which comprises the following steps: S1, surface treatment: removing surface pollutants and oxide layers through plasma cleaning, and coarsening the surface of a base material through laser etching; s2, coating deposition is conducted, specifically, a metal transition layer and a multi-layer nano hard coating are deposited in an enhanced mode through plasma; s3, depositing a self-lubricating coating: depositing the self-lubricating coating by pulse laser; s4, post-treatment: carrying out ion beam assisted post-treatment; s5, heat treatment: performing low-temperature heat treatment to eliminate stress. Through the plasma enhanced PVD and pulse laser deposition technology, the multi-layer nano coating is deposited under the low-temperature condition, the problem of thermal deformation of a heat-sensitive metal base material caused by a traditional high-temperature process is solved, and it is ensured that the multi-layer coating with high hardness and high compactness can still be formed on the premise that the size precision of the base material is not affected; and therefore, the method can be widely applied to surface treatment of high-precision parts.

According to the deformation detection integrated micro-nano sensor, a substrate is an SOI silicon wafer and comprises bottom layer silicon (1), a buried oxide layer (2) and top layer silicon (3) which are sequentially stacked and attached from bottom to top, a detection unit is arranged on the top layer silicon (3) and comprises a deformation detection unit (4), a temperature detection unit (5) and a vibration detection unit (6); the final detection value of the deformation takes a deformation parameter detected by the deformation detection unit (4) as basic data, and meanwhile, a temperature parameter detected by the temperature detection unit (5) and a vibration parameter detected by the vibration detection unit (6) are used for providing compensation for the deformation parameter detected by the deformation detection unit (4); the invention further provides a manufacturing method and a detection method. The piezoresistive effect of the semiconductor is used for detecting the strain, and the measurement sensitivity is remarkably improved.

The invention relates to the technical field of batteries, in particular to a preparation method and application of a functional current collector with low thermal shrinkage and high tensile strength. The functional current collector is prepared by sequentially carrying out magnetron sputtering on the thermal shrinkage transition layer and the copper layer on the surface of the base film and then carrying out water plating on the copper layer. The functional current collector prepared by the invention can effectively solve the problems of relatively large thermal deformation and relatively large residual stress of the functional current collector, and also can improve the overall strength and stability of the functional current collector, so that the functional current collector has a wide application prospect in the technical field of batteries.

A wear-resistant and low-friction coated piston ring and a preparation method therefor are provided. The OD surface diamond-like carbon coating consists sequentially of a first metal interlayer, a second metal interlayer, a gradient DLC layer, alternating high / low hardness DLC layers, and an outer running-in DLC layer. The side surface diamond-like carbon coating consists sequentially of a metal interlayer, a gradient DLC layer, and alternating high / low hardness DLC layers. The preparation method employs physical vapor deposition to sequentially deposit composite DLC coatings on the OD surface and side surface of the piston ring. The coating is a tetrahedral amorphous carbon structure, exhibiting good thickness uniformity and fine grain structure. This improves the wear resistance of the piston ring's OD surface and side surface, reduces the aggressiveness of the piston ring side surface against the piston ring groove, and meanwhile avoids adhesion.

The invention discloses a multi-layer plating process for optimizing surface characteristics of a base material, which is characterized by comprising the following steps of: pretreating the surface of a plated base material, improving the surface smoothness of the base material, and removing dirt on the surface of the base material; electroplating the base material by using the nickel pre-plating solution; chemical plating: the base material subjected to pre-plating treatment is placed in a chemical composite plating solution for chemical plating; the chemical composite plating solution comprises a basic plating solution and second-phase particles, the second-phase particles are nano niobium carbide, and the second-phase particles are wrapped and embedded into an alloy plating layer in the chemical plating process, so that the second-phase particles are distributed in plating layer matrix metal in a discrete mode to form a discontinuous phase. The hard particles niobium carbide are added and are dispersed and distributed in a coating substrate (Ni-P alloy), the hard particles can effectively refine the substrate metal, so that the hardness of the substrate metal is improved, and the niobium carbide hard phase particles are high in hardness, excellent in wear resistance, large in yield limit and high in pressure resistance.

The invention relates to the technical field of rare earth metal electrolysis cathode protection coatings, in particular to a high-temperature-corrosion-resistant yttrium-stabilized zirconia gradient coating on the surface of a tungsten cathode. A metallurgically bonded strong bonding bottom layer is constructed on a tungsten substrate through surface pretreatment and reactive sintering, then an atmosphere plasma technology is adopted to spray a creep-resistant gradient layer with continuous components to buffer thermal stress, and finally a sol-gel technology is utilized to construct an extremely compact corrosion-resistant surface layer in a superposition mode. The high-temperature-corrosion-resistant yttrium-stabilized zirconia gradient coating is constructed through a multi-scale and multi-mechanism synergistic effect, the problems that a tungsten cathode coating is insufficient in binding force and poor in thermal shock resistance are fundamentally solved, molten salt permeation can be blocked, and the service life of a tungsten cathode in a severe environment is remarkably prolonged.

Methods and apparatuses for depositing material into features are described herein. Methods involve depositing an oxide material and then sputtering the oxide material to reduce seams. The oxide material may be deposited by an ALD process.

A decorative radome including a radio-transmissive substrate having a first surface on a first side and a second surface on a second side; and a first surface radio-transmissive decorative coating; methods of manufacturing a PVD coated system include applying a hard coating to the substrate; applying a PVD coating by magnetron sputtering to the substrate; and laser etching one or more of a pattern or a graphic into the PVD coating; and A decorative PVD coated item, comprising: a substrate; a hard coating applied to the substrate; a PVD coating provided on the hard coating and the substrate, wherein the PVD coating is laser etched with one or more of a pattern or a graphic so that the PVD coating is at least partially removed and the pattern or the graphic is revealed as a result of the contrast between the substrate and the PVD coating.

The invention discloses a corrosion-resistant coating for a gas turbine compressor blade and a preparation method of the corrosion-resistant coating, and belongs to the technical field of coatings. Rare earth elements are added into a traditional inorganic salt aluminum coating, and the corrosion resistance and oxidation resistance of the inorganic salt aluminum coating are improved. A corrosion product of the prepared Zn-Al-Mg-rare earth alloy coating is extremely compact, a corrosion channel is blocked, the self-sealing effect of the coating is improved, and the corrosion resistance of the coating is greatly improved; and meanwhile, the Zn-Al-Mg-rare earth alloy coating obtained through electric arc spraying is high in density and good in comprehensive mechanical property.

A process of forming an erosion, oxidation, and wear resistant shot chamber, either a gooseneck or a shot sleeve, is provided. The process utilizes a shrink fitting process for forming a one-piece shot chamber having a liner bonded to the bulk portion of the shot chamber. Channels of predetermined shape and layout are built on the tubular external surface of the liner for facilitating thermal management of the shot chamber during die casting operations.

The invention discloses a cyanide-free cadmium-iron alloy plating process for high-strength structural steel. The cyanide-free cadmium-iron alloy plating process comprises the step that a nickel-titanium alloy plating layer, a cyanide-free cadmium-iron alloy plating layer and a hexavalent chromium passivation film are sequentially prepared on a high-strength structural steel substrate from inside to outside. The prepared sample piece is subjected to a hydrogen brittleness test according to HB 5067.1-2005 Part 1 of hydrogen brittleness test of plating process: Mechanical Method, and the test result meets the standard requirement; the surface of a plated part is free of white rust after being subjected to an acetate mist test for 400h according to GB / T 10125-2021 Artificial Atmosphere Corrosion Test Salt Spray Test, and a plating layer of the plated part has excellent corrosion resistance; according to GB / T 5270-2005 < GB / T 5270-2005 < GB / T > 5270-2005 < GB / T > 5270-2005 > < GB / T > 5270-2005 > < GB / T > 5270-2005 > < GB / T > 5270-2005 > < GB /

The invention provides a functional copper foil current collector and a preparation method and application thereof, the functional copper foil current collector comprises a polymer film, first copper layers and second copper layers, the first copper layers are arranged on two sides of the polymer film, and the second copper layers are arranged on the surfaces of the first copper layers; the residual stress of the functional copper foil current collector is not higher than 5.5 MPa; the thickness d1 of the first copper layer is 50-140 nm, and the grain size a1 of the first copper layer is 20-60 nm; the thickness d2 of the second copper layer ranges from 100 nm to 200 nm, and the grain size a2 of the second copper layer ranges from 100 nm to 200 nm. The functional copper foil current collector has relatively low residual stress, so that the functional copper foil current collector has relatively good mechanical property and stability, the service life of the functional copper foil current collector is prolonged, and the cycle performance and the safety performance of the battery are further improved.

The invention relates to the technical field of anti-oxidation coatings, and particularly discloses a tantalum-tungsten alloy anti-oxidation coating and a preparation process thereof. The tantalum-tungsten alloy anti-oxidation coating comprises a transition layer, an inner layer, a barrier layer and an outer layer which are stacked in sequence, the transition layer is prepared from the following raw materials: an Ir target, a Ta target and an Re target are adopted for co-sputtering; the inner layer is prepared from the following raw materials in parts by mass: Si, MoSi2, Y and Ta-W alloy powder; the barrier layer is prepared from the following raw materials in parts by mass: Al2O3, Yb2O3 and 3YZrO2; the outer layer is prepared from the following raw materials in parts by mass: a compound: Yb2O3, La2O3, Gd2O3, SiC and B4C; and the multi-element borides comprise ZrB2 and HfB2. The tantalum-tungsten alloy anti-oxidation coating prepared in the invention has relatively good high-temperature oxidation resistance.

The invention relates to the technical field of structures and preparation of hydrogen sensor chips, in particular to a preparation method of a vehicle-mounted catalytic combustion type hydrogen sensor chip based on an MEMS (micro-electromechanical system), which comprises the following steps: step 1, growing a layer of SiO2 with low thermal conductivity and insulativity on the front and back surfaces of a Si wafer by adopting a plasma enhanced chemical vapor deposition technology; 2, continuing to grow a SiNX structural layer on the front surface of the Si wafer to form a composite supporting layer with the SiO2 / SiNX micron thickness; 3, patterning is conducted on the surface of the composite film through the photoetching technology, a layer of metal platinum is prepared on the surface of the composite film through the magnetron sputtering technology to serve as a heating electrode and a testing electrode, and the two electrodes are arranged in parallel to form a double-snake-shaped structure which comprises a working area and a welding disc. The catalytic combustion type hydrogen sensor has the advantages of being simple in technological process, low in power consumption and high in response speed, and the response time is 1t; 2s.

The invention belongs to the field of microelectronics, and particularly relates to a full-transparent HfO2-based ferroelectric capacitor and a preparation method and application thereof, and the full-transparent HfO2-based ferroelectric capacitor comprises a substrate, a bottom electrode, a ferroelectric medium layer and a top electrode which are sequentially stacked from bottom to top. Insertion layers are respectively arranged between the ferroelectric medium layer and the bottom electrode and between the ferroelectric medium layer and the top electrode. And the intercalation layer is a TiOx intercalation layer. Compared with the prior art, the defects that in the prior art, the ferroelectric performance of a transparent ferroelectric device is poor, a high annealing temperature is needed, and then the thermal budget requirement of a back-end process is not met are overcome; the TiOx intercalation layers are introduced to the two sides of the ferroelectric dielectric layer, so that the grain orientation is improved, the annealing temperature can be reduced to 400 DEG C, and the method can be compatible with a back-end process.

The invention relates to the technical field of heat sink materials, in particular to a modified gold tin-hard gold plated heat sink material and a preparation method and application thereof. Comprising a first heat sink layer, a nickel plating layer, a gold plating layer, a gold-tin solder layer, a gold plating layer, a nickel plating layer, a second heat sink layer, a nickel plating layer, a hard gold plating layer and a modified gold-tin-silicon solder layer which are sequentially connected from bottom to top. The first heat sink layer is made of oxygen-free copper, the second heat sink layer is made of molybdenum copper or tungsten copper, and the hard gold plating layer comprises a nickel plating layer and a tungsten titanium gold plating layer which are sequentially connected from bottom to top. Tungsten and titanium are introduced into the gold-plated layer on the surface of the heat sink material, so that the hardness and corrosion resistance of the gold-plated layer are remarkably enhanced; a small amount of silicon is doped into the gold-tin solder, so that the shaping processing performance of the gold-tin brittle solder is improved; one-time forming of the solder-heat sink composite material is achieved in a vacuum thermocompression welding mode, and the problem of cavities or overflow caused by solder size errors in the welding process is solved.