165 results about "Aluminum coating" patented technology

The invention discloses a self-lubricating aluminum coating and a preparation method thereof.The preparation method comprises the steps that molybdenum disulfide is pretreated through a silane coupling agent, tetraethoxysilane mixed liquor is added, the pH is adjusted to be 9-10, a water bath reaction is conducted, and molybdenum disulfide-silicon dioxide microcapsules are obtained after high-temperature strengthening treatment; respectively adding a zinc nitrate solution and a hexamethylenetetramine solution, adjusting the pH value to 10-11, carrying out a high-temperature and high-pressure hydrothermal reaction to obtain zinc oxide nanorods, and carrying out ball milling treatment on the zinc oxide nanorods, microcapsules, stearic acid and zirconium oxide balls under the protection of argon to obtain doped microcapsules; after raw materials are pretreated, the raw materials and a dispersing agent solution are added into a mixer respectively, spraying powder, a pretreated base body and the spraying powder are obtained after mixing treatment, spraying treatment is conducted on the surface of the base body through a plasma spraying method, and the self-lubricating aluminum coating is obtained after vacuum annealing treatment. Therefore, the obtained self-lubricating aluminum coating is low in friction coefficient, high in performance and excellent in self-lubricating property.

The invention discloses an enhanced tensile wear-resistant multi-twisted steel wire rope, which relates to the technical field of steel wire ropes, and structurally comprises a multi-twisted steel wire rope formed by twisting three sub-ropes in a left-to-right interactive manner, and each sub-rope is formed by twisting six stranded ropes in a right-to-right interactive manner; the aluminum-based carbon fiber composite core serves as the center of the stranded rope, and the gradient functional layer comprises six center steel wires on the inner layer, twelve micro-arc oxidation concave steel wires on the middle layer, eighteen graphene / zinc-aluminum coating convex steel wires on the outer layer and twelve phase change lubricating fiber bundles on the surface layer. The outer surface of the steel wire rope is sequentially coated with a self-repairing sealing layer containing repairing microcapsules, a boehmite / silane interface bonding layer and an Al2O3 / PEEK abrasion-resistant coating. The tensile strength and the structural stability are improved through a three-stage twisting process; the aluminum-based carbon fiber composite core and the gradient functional layer synergistically enhance core bearing, wear resistance and corrosion resistance; the phase change lubricating fiber bundles release lubricating components during friction, and damage repair is achieved through the self-repairing sealing layer; and the interface bonding layer and the wear-resistant coating strengthen the surface adhesive force and the wear resistance.

This invention discloses a corrosion-resistant aluminum-based multilayer coating on the surface of a sintered NdFeB magnet and its preparation method, comprising: pretreatment of the magnet; preparation of the aluminum coating: in the presence of an inert gas, after adjusting the pressure of the environment to a first preset value, depositing an aluminum coating on the pretreated sintered NdFeB magnet; preparation of the aluminum-based barrier coating: in the presence of a reactive gas, after adjusting the pressure of the environment to a second preset value, exciting the reactive gas into a high-density plasma, generating an aluminum-based barrier layer on the surface of the sintered NdFeB magnet with the deposited aluminum coating; repeating steps S200 and S300, followed by cooling, to complete the preparation of the corrosion-resistant aluminum-based multilayer coating on the surface of the sintered NdFeB magnet. This invention does not involve reactive sputtering, effectively avoiding the "palladium poisoning" phenomenon during the deposition process, and the prepared multilayer coating has excellent corrosion resistance.

The invention relates to the field of suspension plasma spraying, in particular to a long-service-life suspension plasma spraying thermal barrier coating based on a platinum-aluminum coating and a preparation method of the long-service-life suspension plasma spraying thermal barrier coating. The preparation method comprises the following steps: preparing a vertical crack or columnar-like structure ceramic layer on the surface of a platinum modified aluminide bonding layer with lower roughness by using suspension slurry prepared from fully-stable tetragonal phase yttrium oxide stabilized zirconium oxide powder and adopting suspension plasma spraying suspension, so as to obtain a thermal barrier coating system with long service life. The problems that in the prior art, due to stress existing between a ceramic layer prepared through plasma spraying and a low-roughness platinum modified aluminide bonding layer, cracks are continuously formed and expanded at an interface, and the service life of a thermal barrier coating system is short are solved. The long-life thermal barrier coating system can be prepared on the platinum modified aluminide bonding layer through suspension plasma spraying.

The present application relates to the manufacture of high-strength steel coated plate welded parts, in particular to a welding material, a high-strength steel workpiece, a laser welded joint and a manufacturing method thereof. The composition of the welding material satisfies the following conditions in terms of percentage by weight: C is greater than or equal to 0.5%, trace alloying elements are 0-0.36%, the content of Mn and Si is less than or equal to 2%, 6% is greater than or equal to 5C+Mn and is greater than or equal to 2.5%, and the rest is Fe and inevitable other elements; the trace alloying elements are at least one of Nb, V and Ti elements, and the content of Nb, V and Ti elements is less than or equal to 0.12%. The method does not need to remove the aluminum coating, utilizes the solid solution strengthening effect of C, and makes the volume fraction of lath martensite in the final weld after quenching greater than or equal to 90%. This scheme reduces the addition of alloying elements, reduces the cost and process control difficulty, avoids the formation of coarse carbides, improves the mechanical properties and stability of the joint, has high fracture strength and elongation, and realizes the double improvement of the strength and toughness and economy of the joint.

The invention discloses an intelligent zinc-aluminum coating quality monitoring method and system for a wind power blade bolt, and solves the problems that internal defects of a coating cannot be found in an early stage and predictive maintenance cannot be realized in the prior art. The method comprises the following steps: acquiring multi-source monitoring data of coating internal defects, interface micro-strain and corrosion states through a terahertz imaging unit, a pre-embedded FBG sensing unit and a microelectrode array ECN acquisition unit which are integrated on an inspection robot; after carrying out local preprocessing by utilizing an edge computing gateway, synchronizing data to a digital twinborn analysis platform deployed with a coating state intelligent evaluation model so as to output a current health state grade and residual life prediction of the coating; finally, a maintenance decision suggestion is automatically generated or an equipment control instruction is triggered based on the result, closed-loop monitoring from state sensing to intelligent execution is formed, and the system comprises a corresponding hardware module and a software platform and is used for achieving the method.

Disclosed is a laser welded joint (2). When two steel plate base materials are butt-jointed for laser welding, a laser welding solder is added to a molten pool, thereby forming an initial weld seam, and the initial weld seam is quenched to form the laser welded joint (2), wherein at least one steel plate is a steel plate having an aluminum coating or an aluminum alloy coating; the volume fraction of lath martensite (21) in the laser welded joint (2) is not less than 90%, the average mass fraction of Mn is not less than 3.2%, the average mass fraction of Al is not higher than 1.4%, and the average mass fraction of C is lower than the C content of the steel plate base materials; and the height h1 of a reinforcement on the front face of a final weld seam formed by the laser welded joint (2) and the height h2 of a reinforcement on the back face of the final weld seam do not exceed 0.4 mm.

The aluminum fluoride coated nano silicon material is prepared from nano silicon powder, aluminum nitrate nonahydrate, ammonium fluoride, absolute ethyl alcohol and deionized water, and an aluminum fluoride coating layer and a nano silicon negative electrode material are compounded to form an aluminum fluoride coated nano silicon material structure. The aluminum fluoride coating layer on the surface can be converted into a fast ion conductor in the battery circulation process, so that the lithium ion diffusion rate is increased, and migration of lithium ions between the nanometer silicon negative electrode and the electrolyte is promoted. Under the coating protection effect of the coating layer, the volume expansion of the nano-silicon material is improved, the voltage attenuation speed is slowed down, the cycling stability is greatly improved, the cycling performance of the nano-silicon negative electrode material is improved, and silicon particle breakage, material pulverization and falling off from a pole piece are avoided. The coating amount of the aluminum fluoride coating layer is compared, and the optimal coating amount is given. The method has the advantages of low cost and high controllability.

According to the high-strength long-service-life steel wire rope special for the port, the first steel wire strand, the second steel wire strand and the third steel wire strand are all formed by weaving and twisting galvanized stainless steel wires with the outer surfaces plated with chromium-free zinc-aluminum coatings, and the corrosion resistance of the steel wire rope is remarkably improved while it is guaranteed that the steel wire rope has the high strength performance; the service life of the steel wire rope is obviously prolonged. Lubricating grease is stored in the oil storage rope core of the first filling rope, the oil storage cotton of the second filling rope and the composite fiber strands, so that when the steel wire rope is impacted or bent, the oil storage rope core in the center of the steel wire rope can slowly release the lubricating grease; the composite fiber strands are arranged on the rope core, oil storage cotton on the outer side of the rope core and lubricating grease in the composite fiber strands cooperate to lubricate the rope core and the steel wire strands of the outer strand layer, lubricating films are formed on the surfaces of the steel wire strands, and therefore the friction coefficient between the steel wire strands is reduced, the corrosion resistance is further enhanced, and the steel wire rope has the long service life and the strength stability is kept.

The invention relates to an acrylic acid-organic silicon dual-modified polyester aqueous dispersion, which is prepared from the following components in percentage by weight: 1 to 5 parts of hexahydrophthalic anhydride, 10 to 15 parts of isophthalic acid, 1 to 5 parts of adipic acid, 15 to 20 parts of neopentyl glycol, 0.5 to 1 part of unsaturated binary acid, 1 to 2 parts of reflux solvent, 5 to 10 parts of acrylate mixed monomer, 0.5 to 1 part of acrylic acid, 5 to 10 parts of cosolvent, 1 to 5 parts of organic silicon modifier, 0.5 to 5 parts of dimethylethanolamine neutralizer and 40 to 45 parts of deionized water. The acrylic acid and the organic silicon are used for modifying the polyester at the same time, the weather resistance, the hydrolysis resistance and the adhesive force are remarkably improved while the high flexibility of the water-based polyester is kept, the synthesized water-based polyester dispersion can be used for preparing high-performance water-based coil steel coating or coil aluminum coating or other water-based amino coating with VOC smaller than or equal to 100 g / L, and good comprehensive performance is achieved.

The application relates to the technical field of zinc-aluminum coating detection, in particular to a method for rapidly detecting the contents of Zn, Al and Si elements in a zinc-aluminum coating; the method comprises the following steps: ultrasonic cleaning of the zinc-aluminum coating to be detected to obtain a pretreated sample; glow surface analysis of the pretreated sample by using a glow spectrum method, drawing of a horizontal and vertical coordinate graph, and obtaining of an Fe-h curve graph, a Zn-h curve graph, an Al-h curve graph and a Si-h curve graph; according to the curve graphs, the total mass of Zn, Al and Si is respectively calculated; the thickness of the zinc-aluminum coating to be detected is calculated by taking the Fe-h curve graph as a standard curve; according to the curve graphs and the thickness of the zinc-aluminum coating to be detected, the average mass of Zn, Al and Si is respectively obtained; and according to the average mass and the total mass, the average mass fraction of Zn, Al and Si is obtained. The method can avoid the substrate effect of the zinc-aluminum coating in the detection process, so that the accuracy of the zinc-aluminum coating detection is improved.

The utility model relates to a lightweight low-cost coaxial cable for a vehicle, which sequentially comprises a wire core, a metal wrapping tape, a shielding layer and a sheath layer from inside to outside, and the metal wrapping tape is a layer of double-sided metal wrapping tape wrapped outside the wire core; the shielding layer is formed by weaving an aluminum coating basalt fiber shielding weaving layer on the surface of the metal wrapping tape, and 24 ingots and 10 aluminum coating basalt fiber conductors with the monofilament diameter being 0.23 [mu] m are adopted to be evenly attached to the surface of the metal wrapping tape. The wire core is composed of a 7 / 0.26 bare copper conductor and a foaming PP insulating layer, and the outer diameter of the wire core is 2.02-2.18 mm. And the sheath layer is made of PVC (Polyvinyl Chloride). The utility model provides a vehicle coaxial cable which is light in weight and low in cost.

The invention discloses a preparation method of a steel-based alternating-current composite conductor, the structure of the steel-based alternating-current composite conductor is as follows from outside to inside: the first layer is a copper coating layer, the second layer is an aluminum coating layer, and the innermost layer is a steel core, and the steel-based alternating-current composite conductor has the beneficial effects that a composite material with relatively high strength, good plasticity and conductivity is obtained, and the required performance can be obtained through composite preparation, deformation and aging processes; the copper-aluminum alloy material has excellent conductivity of copper, also has the characteristic of light weight of aluminum, has high strength, high modulus and low relaxation of steel and good conductivity and atmospheric corrosion resistance of copper, achieves the purposes of excellent performance and low cost, and can be widely applied to the fields of power transmission, electronic equipment, communication systems, new energy automobiles, photovoltaic power generation and the like.