915 results about "Metal substrate" patented technology

The invention relates to environment-friendly hydrophobic ink and a preparation method thereof, and belongs to the technical field of water-based ink. A copolymerization modifier capable of being combined in a water-based polyacrylate emulsion in an initiation polymerization mode in the stage of preparing the modified water-based polyacrylate emulsion is prepared, and an o-hydroxy aromatic ketone structure in the copolymerization modifier can endow water-based ink with lasting ultraviolet absorption performance; the trifluoromethyl structure can reduce the surface energy of the water-based ink, and the benzimidazole ring structure can form stable coordinate bonds with metal ions, so that the bonding performance of the water-based ink and a metal substrate is enhanced; when the copolymerization modifier is used for modifying the water-based polyacrylate emulsion, the long-term performance, the hydrophobic and oil-resistant performance and the adhesion performance on the surface of a metal base material of the finished water-based ink can be effectively improved.

The invention provides a preparation method of a metal-based ceramic composite membrane with a catalytic ozone function. The preparation method comprises the following steps: preparing functional powder by taking tetrabutyl titanate as a titanium source and silver nitrate or ferric nitrate as a catalytic active metal source and adopting a sol-gel method; a porous metal pipe is used as a supporting body, metal powder and functional powder which are made of the same material as the supporting body are mixed to prepare functional slurry, the functional slurry is evenly deposited on the inner wall of the supporting body through vacuum filtration, and powder particles which are not firmly combined are removed through back flushing; and finally, the binding force between the functional film layer and the metal matrix is improved through high-temperature heat treatment. Wherein the thermal expansion coefficient difference between the metal supporting body and the functional film layer can be reduced by adding the metal powder, the metal powder is melted and diffused in the high-temperature heat treatment stage, and metallurgical bonding is formed between the functional powder and the metal substrate. The method is simple in process, and the prepared metal-based ceramic composite membrane has the advantages of being high in membrane layer binding force, not prone to falling off, high in catalytic activity, high in anti-pollution capacity, stable in operation and the like.

The invention relates to the technical field of adhesives, and discloses an imidazolium ionic liquid and a preparation method and application thereof, the preparation method comprises the following steps: reacting omega-bromoalcohol with 1-(methoxymethyl) imidazole in acetonitrile, and washing with methyl tert-butyl ether to obtain a target ionic liquid precursor; and dissolving the product in acetonitrile, adding 4-trifluoromethyl phenyl isocyanate, and washing with methyl tert-butyl ether after the reaction is finished, thereby obtaining the target imidazolium ionic liquid. The imidazolium ionic liquid disclosed by the invention is applied to a PVB (Polyvinyl Butyral) adhesive, and the PVB adhesive shows excellent adhesion strength in a macroscopic adhesion performance test on the basis of multiple interactions, and particularly has excellent adhesion strength on aluminum. The obtained adhesive can be universally adapted to various substrates such as metal substrates and macromolecule substrates, and finally high-strength and high-durability intelligent adhesion performance is achieved.

The utility model discloses heat insulation type laminated iron, which comprises a metal substrate and a PET (polyethylene terephthalate) layer adhered on the surface of the metal substrate, the PET layer comprises a base layer and a conical array structure formed on the surface of the base layer, the conical array structure comprises a plurality of conical convex structures, and an Ag layer and an oxide protection layer are sequentially arranged on the side surface of each conical convex structure. According to the laminated iron, the reflectivity of the laminated iron in an infrared band can be improved, the heat insulation performance of a material is enhanced, meanwhile, the risk of migration of harmful substances is avoided, and the laminated iron has good safety.

The invention provides a color-coated steel plate with heat-insulating, antibacterial and super-hydrophobic functions, which comprises a metal substrate, and a chemical conversion layer and a primer layer which are sequentially arranged on at least one surface of the metal substrate, and a composite functional finish paint layer is arranged on the primer layer; the composite functional finish paint layer comprises film-forming resin, a near-infrared reflection composite pigment, a dual-mode antibacterial agent and fluorinated nano silicon dioxide; the finishing coat layer in the color-coated steel plate has heat-insulating and antibacterial capabilities and a super-hydrophobic self-cleaning function at the same time; the invention also provides a preparation method of the color-coated steel plate, which comprises the following steps: carrying out surface pretreatment on the metal substrate to form the chemical conversion layer; coating the chemical conversion layer with a primer and carrying out first curing to form a primer layer; the primer layer is coated with finish paint coating, then multi-temperature-zone gradient curing is conducted, and a composite functional finish paint layer is formed; according to the preparation method, a multi-temperature-zone gradient curing process is adopted, the temperature of different curing stages is controlled, and a stable functional structure is constructed.

The invention relates to the technical field of tool surface functional coatings, in particular to a wear self-monitoring superhard wear-resistant gradient reinforced coating and a preparation method thereof.The coating comprises a metal substrate, a high-entropy wear-resistant layer, a color layer and a transition layer, and the outer layer is a top high-entropy wear-resistant layer; the high-entropy wear-resistant layer is composed of Ti / Al / Zr / Si / Mo-N, and the hardness gradient of the high-entropy wear-resistant layer is 35-55 GPa; the color layer is of an AlTiN / Si (Ti) double-layer structure and has a multicolor structural color, and the hardness of the color layer is 20-35 GPa; the transition layer is a component gradient system. The preparation method adopts multi-target magnetron sputtering, and comprises the steps of substrate pretreatment, layered deposition (wear-resistant layer / color layer / transition layer), top layer deposition and vacuum cooling. By means of the design, the problems that an existing coating lacks self-monitoring, the hardness gradient is narrow, and interlayer stripping is prone to occurring are solved, abrasion visual monitoring is achieved, super-hard abrasion resistance and high binding force (larger than or equal to 85 N) are achieved, different cutting working conditions are adapted, and the service life of a cutter is greatly prolonged.

The invention provides a coating composition, a metal protective coating and a preparation method of the metal protective coating. The coating composition is prepared from the following components in percentage by weight: 15 to 50 weight percent of silica sol, 3 to 25 weight percent of glass powder, 10 to 25 weight percent of silane coupling agent, 0.5 to 2 weight percent of organic acid, 2.5 to 20 weight percent of filler and the balance of water, wherein the melting point of the glass powder is 400-600 DEG C. The glass powder has the specific melting point, can soften and flow in the coating curing process, is fused with the silica sol and fills coating gaps, a more compact network structure is formed, the sealing performance and permeation resistance of a coating are improved, and corrosion of a corrosive medium to metal is blocked. The silane coupling agent is introduced, so that the interface bonding force between the coating and the metal substrate can be enhanced, and the adhesive force of the coating to the metal substrate is improved. The coating composition takes water as a solvent, so that the emission of organic volatile matters and the harm to the health of operators are reduced.

The invention belongs to the technical field of surface engineering, and relates to a preparation method of a protective coating for a metal connector of a solid oxide battery. A compact transition metal oxide inner layer is deposited on a metal substrate in a reactive sputtering mode, then a transition metal alloy outer layer is deposited in a metal sputtering mode, a transition metal oxide / transition metal alloy composite coating is formed, and a spinel protective layer is formed after annealing treatment. According to the method, a transition metal oxide inner layer is used as a diffusion barrier layer, diffusion of elements such as Cr from a substrate to a coating and diffusion of oxygen to the substrate in the high-temperature annealing and long-term service process are effectively inhibited, and therefore the thickness of a reaction layer and the thickness of a thermal growth oxide layer are remarkably reduced. The composite coating is compact in structure, stable in component, good in matching with the thermal expansion coefficient of the substrate, excellent in oxidation resistance and low in surface specific resistance, and capable of effectively improving the long-term operation stability and prolonging the service life of the SOC connector.

The embodiment of the invention provides a foil structure with a carbon nanotube and a preparation method thereof, a cold cathode and an X-ray tube, the foil structure comprises a metal substrate, the metal substrate is provided with a first surface and a first side surface, the first side surface is vertical to the first surface, and the first side surface is located at the edge of at least one side of the metal substrate; the bonding layer is located on the first surface of the metal substrate; the bonding layer is arranged on the first surface of the metal substrate, the multiple carbon nanotubes are located on the first surface of the metal substrate, the bonding layer is used for enhancing the bonding strength of the metal substrate and the multiple carbon nanotubes, the multiple carbon nanotubes comprise a carbon nanotube film and multiple discrete carbon nanotubes, the carbon nanotube film is located on the first surface, and the discrete carbon nanotubes are located on the second surface. The multiple discrete carbon nanotubes are located in the area, close to the first side face, of the first surface, at least the other part of the multiple discrete carbon nanotubes is located outside the carbon nanotube film, orthographic projections of the multiple discrete carbon nanotubes on the metal substrate are located outside the first surface, and the at least the other part of the multiple discrete carbon nanotubes protrude in the direction away from the metal substrate relative to the first side face.

The invention belongs to the technical field of metal substrates, and particularly relates to a graphene composite high-thermal-conductivity aluminum substrate, a preparation method and application. The graphene composite high-thermal-conductivity aluminum substrate comprises a conductive copper foil layer, a graphene composite high-thermal-conductivity layer and an aluminum substrate layer, the graphene composite high heat conduction layer comprises an upper layer, a middle layer and a lower layer, and the upper layer is connected with the conductive copper foil layer and is a heat conduction adhesive layer; the middle layer is a graphene composite sheet layer and is a film layer formed by compounding and hot-pressing graphene and a polymer; the lower layer is connected with the aluminum substrate layer and is a graphene modified aluminum oxide film layer; graphene in the graphene composite sheet layer is arranged in a horizontal orientation manner; graphene in the aluminum oxide film layer is arranged in a vertical orientation manner. According to the graphene composite high-thermal-conductivity aluminum substrate and the preparation method thereof, the graphene is used for constructing a longitudinal efficient heat conduction path and balancing stress, and the obtained graphene composite high-thermal-conductivity aluminum substrate has ultrahigh heat conduction performance, ultralow warping rate and good reliability and can be used in high-performance electronic devices and circuit boards.

The invention discloses an intelligent response type self-repairing anti-corrosion super-hydrophobic composite coating and a preparation method thereof, and belongs to the technical field of functional protective coatings, the coating comprises a polymer binder matrix, and super-hydrophobic functional particles and multifunctional microcapsules dispersed in the polymer binder matrix; the multifunctional microcapsule is provided with a capsule wall and a capsule core; and the capsule core simultaneously contains a repairing agent for repairing physical damage and a corrosion inhibitor for inhibiting corrosion of the substrate. When the coating is subjected to external mechanical damage, the microcapsules are broken, two active substances are synchronously released, healing of physical scratches and targeted corrosion inhibition of an exposed metal substrate are achieved, and a dual repair mechanism is formed. The super-hydrophobic passive shielding function and the intelligent response active protection function after damage are combined, a full-time-domain and multi-layer protection system is constructed, the reliability of the protection coating in a severe service environment is remarkably improved, and the service life of the protection coating in the severe service environment is remarkably prolonged. The method has important application value in the fields of aerospace, ocean engineering, transportation and the like.

The invention relates to the technical field of coatings, in particular to a high-gloss water-based two-component finish paint. The high-gloss water-based two-component finish paint comprises a component A and a component B, wherein the component A is prepared from the following raw materials in parts by weight: 70-90 parts of a polyurethane modified water-based acrylate dispersion, 5-10 parts of a water-based high-hydroxyl acrylic acid dispersion, 0.1-1 part of a flatting agent, 0.1-1 part of a wetting agent, 0.1-1 part of a defoaming agent, 1-10 parts of water-based color paste and 5-15 parts of water; and the component B is 5-15 parts by weight of a water-based isocyanate curing agent. The water-based two-component finishing paint provided by the invention can be used for thick coating, miliaria and dark bubbles are not easy to occur, a paint film is good in leveling property, good in fullness and high in glossiness, and the water-based two-component finishing paint is particularly suitable for coating of a metal substrate.

The invention discloses a preparation process of a high-temperature-resistant metal protective coating, and relates to the technical field of protective coatings. According to the coating, an inorganic material which is stable at high temperature is compounded with an organic polymer to form a matrix with excellent high-temperature resistance, and an anti-corrosion filler is added to improve the corrosion resistance and the wear resistance. Through a specific preparation process, the coating and the metal substrate are tightly combined to form a compact protective barrier. The coating provided by the invention has excellent high-temperature resistance, corrosion resistance and adhesive force, and is suitable for metal structure protection in a high-temperature environment.

The utility model discloses metal base material surface coating binding force detection equipment which comprises a detection table, a detection assembly and an auxiliary assembly are arranged at the upper end of the detection table, a controller is arranged on one side of the detection table, and through cooperation of the detection assembly and the auxiliary assembly, multi-angle and multi-mode detection of the metal base material surface coating binding force can be achieved. The defects that in the prior art, a detection method is single, and the binding force cannot be comprehensively and accurately evaluated are overcome, specifically, a first electric push rod, a first motor, an adjusting gear, an adjusting rack, a micro motor and other parts in the detection assembly can accurately adjust the detection force and the detection position, and the detection accuracy is improved. Therefore, the pressing detection block can detect the coating with proper force and angle, so that the bonding strength between the coating and the metal base material can be measured more accurately.

Provided is a precoated metal plate (1), in which a second exposed part (30B) is disposed directly behind a first exposed part (30A), and a first length (L1) of the first exposed part (30A) from an end surface (15) of a metal substrate (10) to an edge part (21A) of a first coating film part (20A) is equal to or greater than a second length (L2) of a second exposed part (30B) from the end surface (15) of the metal substrate (10) to an edge part (21B) of a second coating film part (20B) disposed directly behind the first exposed part (30A).

The invention relates to the technical field of coatings, and discloses an acid and alkali resistant UV curing coating and a preparation method thereof. The prepared UV curing coating is prepared from the following raw materials in parts by weight: 40 to 60 parts of acrylic resin, 3 to 8 parts of pentaerythritol tetraacrylate, 3 to 7 parts of silicon dioxide, 3 to 5 parts of a photoinitiator, 6 to 12 parts of a composite reinforcing agent, 0.2 to 0.6 part of a flatting agent, 1 to 2 parts of a dispersing agent, 0.5 to 1.5 parts of a de-foaming agent and 15 to 25 parts of water. A coating film obtained after the coating is subjected to ultraviolet curing has excellent acid and alkali resistance, salt spray resistance and adhesive force and can be widely applied to the surface of a metal base material, and the metal base material is protected against corrosion of corrosive media such as acid, alkali and salt.

The invention discloses an electroplating method of a low-porosity nanoscale bright tin layer, which comprises the following steps: placing a clean metal substrate in an activating solution containing a surface modifier, and applying high pulse current for short-time impact to form a transition layer to obtain a target substrate; a target base material is placed in the nano-composite tin plating solution, electroplating is carried out under the cooperation of a continuous ultrasonic field and target waveform pulse current, and a low-porosity nano-scale bright tin layer is formed; the nanometer composite tin plating solution comprises stannous methanesulfonate, methanesulfonic acid, nanometer silicon carbide, nanometer silicon dioxide, a grain refiner, a dispersing agent, cinnamyl aldehyde, a vinyl pyrrolidone copolymer, ascorbic acid, a wetting agent and the balance deionized water. The binding force of a plating layer without a base coat is improved, the plating layer is strengthened, compact and bright, and the process is environmentally friendly.

To provide improved surgical instruments. [Solution] Surface preparation of sliding surfaces can improve the wear performance of surgical instruments such as surgical staplers, which include a reusable mechanism that is used multiple times with a single-use reloadable cartridge. A combination of surface hardening, surface finishing, and surface coating can be applied to the metal components of surgical instruments to reduce the possibility of abrasive wear in metal-to-metal sliding engagements. Surface hardening technology can enable further manufacturing operations such as welding without compromising the strength of the underlying metal substrate. With stainless steel metal substrates, surface hardening or surface hardening technology may reduce corrosion resistance, so a surface coating can be added to suppress surface oxidation and to provide a barrier against metal-to-metal contact. Further lubricating coating layers, such as a brazing coating layer, can enhance abrasion resistance.

The application discloses a kind of multilayer double-channel substrate integrated waveguide filters, belong to microwave communication technical field, including sequentially stacked multiple SIW cavities, the second metal substrate of top layer SIW cavity is equipped with first direction slot gap;The first metal substrate of bottom layer SIW cavity is equipped with second direction slot gap;In intermediate SIW cavity: the first metal substrate of second layer SIW cavity is equipped with first direction slot gap, the second metal substrate of penultimate layer SIW cavity is equipped with second direction slot gap, and the rest metal substrate is all equipped with the cross slot gap combined into by first direction slot gap and second direction slot gap;First direction slot gap and second direction slot gap are aligned with cross slot gap;Filter first channel includes first input port, all first direction slot gap and first output port;Filter second channel includes second input port, all second direction slot gap and second output port.The application shows good frequency selection characteristic and high channel isolation.

The invention discloses an LED packaging structure and a COB light source, the LED packaging structure comprises a metal substrate, the upper surface of the metal substrate is provided with a BT layer, the center of the BT layer is provided with a light-emitting area, the BT layer is provided with a first box dam and a second box dam which surround the light-emitting area in a stacked mode from bottom to top in sequence, the first box dam is white glue, the diameter of the first box dam is the same as that of the second box dam, and the diameter of the second box dam is the same as that of the first box dam. The inner side of the first box dam and the inner side of the second box dam are filled with fluorescent glue layers, and the fluorescent glue layers are located above the light-emitting area. According to the COB light source, the LED packaging structure is adopted, the air tightness is further enhanced, the problems of light attenuation, aging, fluorescent powder blackening and the like are solved, the overall dam width is smaller than the width of a single-layer dam for achieving the same dam height, the area of a small light-emitting area can be occupied, a larger light-emitting area can be achieved, and the product performance is improved.

The invention provides a minimally invasive implantation needle for a brain-computer interface, a preparation method of the minimally invasive implantation needle and a related product. The method comprises the following steps: providing a metal substrate made of biocompatible metal, and carrying out first overall electrochemical polishing on the metal substrate to provide a clean and flat initial surface; an implantation needle array pattern is scanned and cut on the polished metal substrate through ultrafast laser, the cutting depth is 85%-95% of the thickness of the metal substrate, and the scanned and cut metal substrate comprises a plurality of implantation needle prototypes connected to a substrate body through micromechanical connection points; and carrying out second overall electrochemical polishing on the scanned and cut metal substrate until the micro-mechanical connection point is dissolved and the implant needle prototype is naturally separated from the substrate main body, thereby obtaining the implant needle. According to the method, the product yield close to 100% can be achieved, it is ensured that the implantation needle has a perfect geometrical shape and a lossless surface, and the implantation needle can be produced in a wafer-level batch mode.

The invention belongs to the technical field of chemistry, chemical engineering, materials and the like, and particularly relates to a composite material and a preparation method and application thereof.The composite material comprises a metal base material, a bottom coating and a surface coating, the surface of the metal base material is coated with the bottom coating, and the bottom coating comprises nanoparticles and a resin material; the surface coating is located on the upper surface of the bottom coating, and the surface coating comprises a fluorine-containing silane solution; wherein the upper surface of the bottom coating is provided with a surface microstructure, and the surface microstructure is formed by the nanometer particles in a protruding mode based on plasma etching. Wherein the bottom coating can form a surface microstructure to ensure the hydrophobic property, and can fix nanoparticles, so that the frost prevention durability is ensured, and the powder falling of the composite material in the use process is also avoided; the surface coating can further improve the hydrophobicity of the bottom coating under the condition that the surface microstructure is not influenced.

The invention provides a composite supercapacitor material, a preparation method thereof and a supercapacitor, and the preparation method comprises the following steps: immersing a foam metal substrate in a sulfur-molybdenum source deposition solution, and carrying out the first electrodeposition to obtain a foam metal substrate loaded with amorphous molybdenum sulfide; and immersing the foam metal substrate loaded with amorphous molybdenum sulfide into a silver source deposition solution, and carrying out second electrodeposition to obtain the composite supercapacitor material which comprises the foam metal substrate loaded with amorphous molybdenum sulfide and silver. According to the preparation method, the silver-amorphous molybdenum sulfide-foam metal composite electrode material is prepared through two-step electrochemical deposition, the preparation process is simplified, high temperature and high pressure are not needed, large-scale production can be achieved, and a high-performance water-based and solid-state symmetric supercapacitor constructed based on the material has a good application prospect. And collaborative improvement of energy density and power density and practicability of a solid-state device can be realized.

The invention discloses a preparation method of an organic solderable protective film, which comprises the following steps: carrying out controllable micro-etching treatment on the surface of a metal substrate, so that the arithmetic mean roughness of the surface of the metal substrate is less than or equal to 0.20 mu m, and microscopic bulges on the surface of the metal substrate are of smooth hill-shaped structures; and performing preimpregnation treatment and OSP film forming treatment on the surface of the metal substrate in sequence to form the organic weldability protective film. According to the method disclosed by the invention, the uniformity of the organic weldability protective agent film layer and the reliability of high temperature resistance and chemical corrosion resistance are improved by accurately regulating and controlling the microstructure of the copper surface.

The invention relates to a high-temperature-resistant Si3N4-based wave-absorbing material based on FSS and a preparation method thereof. The high-temperature-resistant Si3N4-based wave-absorbing material based on the FSS comprises a frequency selective surface layer, a porous silicon nitride dielectric layer and a metal substrate which are sequentially stacked from top to bottom, the frequency selective surface layer is composed of M * N FSS units which are periodically arranged in a two-dimensional plane and are in a Jerusalem cross pattern, M is larger than or equal to 8, and N is larger than or equal to 8. The high-temperature-resistant Si3N4-based wave-absorbing material based on the FSS provided by the invention can realize effective absorption of C-Ku wave band electromagnetic waves, has the characteristics of thin thickness, low reflectivity, high strength, high temperature resistance, light weight and wide frequency band, and can realize the purpose that the high-temperature-resistant Si3N4-based wave-absorbing material can be used for absorbing high-temperature-resistant Si3N4-based wave-absorbing material in a complex and severe physical environment with relatively small physical burden. And efficient, reliable and lasting absorption of broadband electromagnetic waves is realized.

Disclosed in the present invention is a ceramization composite process applied to a metal substrate, comprising the following steps: 1) performing micro-arc oxidation treatment on a metal substrate; and 2) performing post-treatment on the metal substrate obtained in step 1). In the present invention, micro-arc oxidation treatment is performed on the metal substrate, which may result in micro-arc oxidation ceramic films of different colors on the surface of the metal substrate, the colors are uniform, and the appearance is beautiful; and then post-treatment is performed on the metal substrate to form protection for the micro-arc oxidation ceramic films and fill micro-pores of the micro-arc oxidation ceramic films, such that micro-film pores on the surface of the metal substrate undergone the micro-arc oxidation treatment are sealed, thereby greatly improving the stain resistance, weatherability, and surface hardness of the metal substrate, preventing film layer pulverization or cracking after the metal substrate is impacted, and solving the problems of poor stain resistance caused by the presence of micro-pores on surfaces, poor weatherability and insufficient surface hardness caused by open and unsealed film pores, and high hardness and brittleness of micro-arc oxidation films of existing micro-arc oxidation processes.

The invention discloses an anti-scraping thin coating type powder coating plate and a preparation method thereof, and relates to the technical field of coating materials and metal surface treatment. According to the scheme, the method comprises the following steps: forming a film on the surface of a degreased, alkali-washed and passivated metal substrate by adopting an interface modification liquid containing a silane coupling agent KH-590; and performing melt extrusion on a powder coating prepared from a hydroxyl-terminated polyether-ether-ketone / bisphenol A type epoxy silane grafted composite resin matrix, a triglycidyl isocyanurate / caprolactam composite curing agent and a titanate modified nano composite filler, and then performing electrostatic spraying and curing to obtain a coated plate with a dry film thickness of 20-40 [mu] m, wherein the powder coating is prepared from the hydroxyl-terminated polyether-ether-ketone / bisphenol A type epoxy silane grafted composite resin matrix, the triglycidyl isocyanurate / caprolactam composite curing agent and the titanate modified nano composite filler. The invention has the following beneficial effects: the interface modification layer and the silicon-containing grafted resin cooperate to improve the interface bonding force, boiling resistance and salt spray resistance; the multi-scale hard filler constructs a reinforced skeleton in the film, so that the scratch resistance is improved while the mechanical property is maintained, and thin coating and powder saving are realized under the condition of ensuring the decoration and durability.

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 invention relates to the technical field of a plasma spraying process of a high-corrosion-resistance yttrium oxide coating and a gradient structure design method, and particularly discloses the plasma spraying process of the high-corrosion-resistance yttrium oxide coating and the gradient structure design method. The invention aims to solve the problems that a traditional plasma spraying yttrium oxide coating is high in porosity, non-uniform in microstructure, easy to crack and peel off due to mismatch of a thermal expansion coefficient and a metal matrix, and difficult to consider compactness, stress buffering and long-term stability at the same time. The method comprises the following steps: carrying out degreasing cleaning, sand blasting coarsening, ultrasonic oscillation and drying pretreatment on a substrate, carrying out high-corrosion-resistance yttrium oxide composite powder spraying by adopting plasma spraying parameters optimized by an orthogonal test, and arranging multiple layers of intermediate layers with components and thermal expansion coefficients in gradient transition between the substrate and a coating, follow-up heat treatment and nano sol hole sealing treatment are assisted. By adopting the technical scheme, low porosity, high bonding strength, excellent thermal mechanical stability and long-term corrosion resistance in a strong corrosion environment of the coating can be realized.