153 results about "Alloy surface" patented technology

This invention discloses a rare-earth Ce-purified Ti-Mn-based hydrogen storage alloy and its preparation method. The preparation method includes the following steps: mixing FeV80 with Ce and melting it in a vacuum arc melting furnace under an argon protective atmosphere; polishing the surface of the FeV80-yCe master alloy to remove the surface-enriched impurity phases, obtaining a purified master alloy; mixing the purified master alloy with Ti, Zr, Mn, and Cr raw materials and arc melting it under vacuum conditions; after melting, cooling it to room temperature with the furnace to obtain the rare-earth Ce-purified Ti-Mn-based hydrogen storage alloy. This invention pre-treats FeV80 with Ce, and removes impurities enriched on the surface of the metal ingot through melting and then polishing. The process is simple and cost-controllable, fundamentally solving the problem of impurity deterioration in industrial raw materials, improving the hydrogen storage capacity of the hydrogen storage alloy at 5MPa hydrogen pressure, and meeting the comprehensive performance requirements for industrial applications.

The present application belongs to the technical field of alloy surface treatment, and discloses a method for removing surface electric erosion pits of CoCrWNi alloy wire. The electrolyte is prepared from phosphoric acid, sulfuric acid, water and glycerol; the wire is used as an anode, and electrolytic polishing is carried out at a temperature of 60 DEG C and a voltage of 11 V for 2 min 30 s; and after polishing, deacidification, neutralization and drying passivation treatment are sequentially carried out. By adding glycerol and controlling the "high-temperature fast polishing" window, the method can selectively flatten the flange of the electric erosion pit and fill the pit bottom by using the anode selective dissolution and viscous film leveling mechanism, effectively removes the electric erosion pits with a depth of microns to tens of microns, and avoids over-corrosion of the substrate, so that the surface of the wire after treatment is mirror-like and glossy, without pitting and shadow, and the fatigue life and use safety of the wire are significantly improved.

This invention relates to the field of zinc alloy surface modification technology, and particularly to a corrosion-resistant medical zinc alloy, its preparation method, and its applications. The preparation method includes the following steps: weighing raw materials according to the chemical composition of the zinc alloy; cleaning the surface of the raw materials; smelting, refining, and casting to obtain an ingot; subjecting the ingot to equal-channel angular extrusion deformation to obtain an extruded zinc alloy; performing high-energy ion implantation on the zinc alloy to obtain a nitrogen-ion-implanted zinc alloy; and preparing a coating on the surface of the nitrogen-ion-implanted zinc alloy to obtain the final product. This invention achieves a high-adhesion, dense, and uniform deposition effect on the alloy surface through the synergistic control of "equal-channel angular extrusion + high-energy nitrogen ion implantation + biomimetic coating deposition," solving the problem of severe galvanic corrosion at localized sites in existing zinc alloys under corrosive environments. Simultaneously, the dense deposition layer helps inhibit rapid dissolution of the zinc alloy surface, significantly reducing the corrosion rate of the zinc alloy in corrosive environments.

This invention discloses a polishing method and apparatus for nickel-based alloys based on photocatalysis and photothickening synergy. It achieves dual-driven processing by simultaneously triggering photocatalytic workpiece surface modification and photo-triggered thickening of the polishing slurry through an integrated dual-light system, realizing surface softening and medium thickening. Composite abrasive particles loaded with TiO2 / ZnO photocatalysts form a low-hardness oxide layer on the nickel-based alloy surface under ultraviolet light irradiation, reducing processing resistance. Precise viscosity control of the polishing slurry is achieved through azobenzene / cinnamic acid photochromic molecules, combined with shear-induced particle agglomeration to form a dual thickening system, improving viscosity stability. This invention solves the technical pain points of work hardening in nickel-based alloys, large viscosity fluctuations in traditional shear-thickening polishing slurries, and poor processing uniformity, improving processing efficiency and workpiece surface quality. It is suitable for efficient and precise machining of difficult-to-machine nickel-based alloys such as Inconel 718 and GH4169.

The utility model relates to the field of aluminium alloy surface treatment technology, concretely is an aluminium alloy anodic oxidation film layer removing device, including ultrasonic cleaning tank, the ultrasonic cleaning tank top is equipped with auxiliary cleaning subassembly, the auxiliary cleaning subassembly is by first support, second support common installation on the ultrasonic cleaning tank, the auxiliary cleaning subassembly includes the T character structure board of installing on the first support, the T character structure board below is equipped with the rectangular plate, drives the shaft through reciprocating motor, drives transmission tooth and the tooth groove on T character structure board meshing, realizes the up-and-down reciprocating motion of aluminium alloy plate between T character structure board and the clamp plate, and the cavitation effect produced by cooperation ultrasonic cleaning tank has greatly increased the contact frequency and contact area of cleaning fluid and oxidation film layer, effectively solved the problem that oxidation film layer because of the inadequate contact leads to the poor cleaning effect, the low efficiency, significantly promoted oxidation film layer cleaning efficiency and quality, satisfy actual production demand.

This application provides a grinding device for aluminum single panels, comprising a frame, a grinding station disposed above the frame, a grinding mechanism disposed on the frame and above the grinding station, and a clamping mechanism disposed on the grinding station. In actual use, by matching and placing the aluminum alloy sheet in the grinding station, and then setting clamping components on both sides of the grinding station, the aluminum alloy sheet is clamped in the grinding station by moving the two clamping components toward each other, thereby effectively improving the fixing stability of the aluminum alloy sheet and avoiding displacement of the aluminum alloy sheet relative to the supporting surface during the grinding process. This effectively ensures the uniformity of the grinding of the aluminum alloy sheet surface, improves the grinding quality of the aluminum alloy surface, and effectively removes oxide spots and scratches on the aluminum alloy surface. It can fully meet the product needs of customers and has the advantages of simple structure, easy operation, low implementation cost, and easy promotion and implementation.

The application provides a titanium alloy surface antibacterial material and a preparation method and application thereof, and comprises a metal phosphide coating constructed on a titanium alloy substrate surface through a plasma immersion injection process and a chemical vapor treatment process and application of the metal phosphide coating in antibacterial medical materials. The coating of the technical scheme has good sterilization function and biocompatibility.

Interstitial uptake of a metal alloy is leveraged to either stabilize low-temperature miscibility gaps or promote new miscibility gaps with respect to the interstitial elements at temperatures above the native metal interstitial-free alloy miscibility gap. The miscibility gap pathway offers selective precipitation at the surface while maintaining base alloy properties throughout the bulk of an article or component. Interstitially-induced separated phases offer even higher control over the interdiffusion between the metal alloy and a coating, which will expand the number of compatible coatings for a given alloy, increasing the potential performance of the alloy in harsh environments.

FIELD: protective coatings.SUBSTANCE: method for forming a protective oxide-ceramic coating on the surface of products made of valve metals and alloys by the plasma electrolytic oxidation method involves immersing the product as an electrode together with a counter electrode in a bath filled with an aqueous alkaline electrolyte, and supplying rectangular pulses of anodic and cathodic voltage to the electrodes using a pulsed power source. Anode and cathode voltage pulses are supplied with a current-free pause between them, the value of which is 4.8 times the duration of the anode pulse. The amplitude values of the cathode voltage pulses range from 85 to 149 V with a pulse repetition frequency from 1000 Hz to 4000 Hz, while the current pulse repetition frequency is additionally regulated.EFFECT: obtaining oxide-ceramic coatings with specified properties under reduced energy conditions, with lower values of cathode voltage.1 cl, 2 ex

The application provides an aluminum alloy low-temperature oxidation hole sealing reagent and a preparation method thereof, and relates to the technical field of aluminum alloy surface treatment. The aluminum alloy low-temperature oxidation hole sealing reagent comprises the following raw materials in parts by mass: 2-9 parts of lithium salt, 0.1-1 parts of surfactant, 0.2-5 parts of alcohol, 0.5-1 parts of pH buffer, 0.5-5 parts of corrosion inhibitor, 0.5-5 parts of dispersant and 80-100 parts of water. The aluminum alloy hole sealing treated by the reagent has small hole sealing weight loss, high corrosion resistance and high pollution resistance.

This utility model discloses an integrated aluminum alloy and plastic injection molding structure for walkie-talkies, comprising an aluminum alloy panel and a plastic panel. By employing a novel injection molding process, this utility model achieves integrated injection molding of the aluminum alloy and plastic, ensuring both the aesthetics and durability of the plastic material surface while maintaining the metallic texture and strength of the aluminum alloy surface. This optimizes the assembly process and significantly improves product quality. Furthermore, connecting sleeves are attached to the outer side of the plastic panel. These connecting sleeves contain components such as an anti-slip layer, a cavity, a reinforcing layer, and a support plate. These components work together to increase the strength of the connecting sleeves, preventing cracking or damage during panel installation and removal due to excessive force. This effectively extends the service life of the components and demonstrates strong practicality.

This invention relates to a trivalent element-doped anti-corrosion coating on the surface of a magnesium-zinc alloy and its preparation method. The trivalent element-doped anti-corrosion coating comprises: a magnesium-zinc alloy substrate, and a trivalent element-doped anti-corrosion coating formed in situ on the surface of the magnesium-zinc alloy substrate; wherein the anti-corrosion coating is a layered bimetallic hydroxide anti-corrosion coating doped with a trivalent element; the trivalent element in the trivalent element-doped anti-corrosion coating includes at least one of aluminum, iron, nickel, and lanthanum; the method involves first placing at least one of the trivalent element's elemental form, oxide, and hydroxide into deionized water, heating, and introducing CO2 gas to obtain a trivalent element carbonate solution; then immersing the magnesium-zinc alloy substrate in the trivalent element carbonate solution; finally, adding an alkaline solution dropwise to the carbonate solution for a second immersion treatment and drying to obtain the trivalent element-doped anti-corrosion coating on the surface of the magnesium-zinc alloy.

The utility model relates to related technical field of alloy surface processing especially, a kind of rotary alloy surface sand blasting treatment device, including processing table, the top middle part of the processing table is provided with rotating mechanism, and the top another end of the processing table is provided with sand blasting mechanism.The utility model is provided with rotating mechanism, by four groups U-shaped frame, in the processing process, four groups U-shaped frame can rotate in turn, rotate in turn and send the workpiece fixed on it to the working range of sand blasting gun, sand blasting treatment can be carried out to multiple workpieces in the same time, greatly shorten the overall processing cycle, improve production efficiency, sand blasting mechanism is in horizontal direction, electric push rod promotes movable plate to slide along first guide column horizontally, it is convenient to adjust the horizontal distance between sand blasting gun and workpiece, in vertical direction, second driving motor rotates and makes U-shaped plate slide up and down along second guide column, thereby the height of sand blasting gun is adjusted, ensure that sand blasting position is accurate.

The present application relates to the technical field of material performance prediction, and discloses a method for predicting high-temperature oxidation film stability of an alloy based on theoretical calculation, comprising the following steps: S1: obtaining stable oxides actually formed on the surface of the alloy, corresponding molar mass, metal atom number, density of the alloy, and average atomic weight of the alloy for the alloy composition and a preset high-temperature oxidation environment; S2: obtaining the theoretical density of the oxides according to the initial crystal structure of the oxides; S3: obtaining key parameters for evaluating the protection performance of metal oxides; S4: when the key parameters are less than or equal to a first preset value, the high-temperature oxidation film stability of the alloy is poor; when the key parameters are greater than the first preset value and less than a second preset value, the high-temperature oxidation film stability of the alloy is good; and when the key parameters are greater than or equal to the second preset value, the high-temperature oxidation film stability of the alloy is poor. The present application can efficiently, at low cost, and in advance, screen high-performance oxidation-resistant alloys.

The application discloses an etching solution for aluminum alloy surface microstructure, which comprises a solvent and solutes; the solvent is water, and the water comprises the following components and concentrations of solvents: HCl 2.4mol / L-3.2mol / L, H2O2 2.4mol / L-4.8mol / L, HF 3.2mol / L-4.8mol / L, corrosion inhibitor 1g / L-10g / L, dispersant 20g / L-50g / L, and H2O2 stabilizer 5g / L-10g / L. The etching solution can efficiently and accurately etch aluminum alloy. The application further discloses a preparation method of the etching solution for aluminum alloy surface microstructure.

The application belongs to the technical field of surface modification, and relates to a preparation method of a flame-retardant ceramic coating based on yttrium oxide concentration regulation, comprising the following steps: dissolving sodium hydroxide and sodium fluoride with a specific mass ratio into a sodium silicate salt electrolyte, and adding a Y2O3 solution with a specific concentration into the electrolyte to obtain a first mixed solution; then placing a magnesium alloy substrate in the first mixed solution, and performing micro-arc oxidation treatment to obtain a magnesium alloy-flame-retardant ceramic composite, and finally obtaining a flame-retardant ceramic coating on the surface of the magnesium alloy substrate through post-processing. The mass ratio of sodium hydroxide and sodium fluoride, the concentration of the sodium silicate salt electrolyte, and the Y2O3 solution with an appropriate concentration are cooperatively regulated to realize accurate regulation of the performance of the flame-retardant coating on the surface of the magnesium alloy, so as to meet the actual application requirements of the flame-retardant performance of the magnesium alloy material for high-temperature key components, and promote the wide application of the magnesium alloy under high-temperature and flammable working conditions.

This invention discloses a high-temperature oxidation-resistant and wear-resistant titanium carbide reinforcement layer on the surface of titanium alloys and its preparation method. This titanium carbide high-temperature oxidation-resistant and wear-resistant reinforcement layer is generated in situ on the surface of a titanium alloy substrate using nanodiamond as the carbon source. The layer is mainly composed of titanium carbide and forms a metallurgical bond with the titanium alloy substrate. Its thickness is no more than 10 μm and it is dense and uniform. This invention overcomes the bottlenecks of existing surface modification technologies, providing reliable technical support for the widespread application of titanium alloys in high-end fields such as aerospace, energy, and chemical engineering, and has significant economic and social benefits.

This invention relates to a method for predicting the wear performance of aluminum alloy surfaces using self-lubricating composite ultrasonic shot peening. The method first pre-treats the aluminum alloy surface, then textures the surface using laser processing, fills it with a self-lubricating material, and finally performs ultrasonic shot peening to form a mechanically interlocking structure that enhances the bonding strength of the filler layer. Ultrasonic shot peening creates a fine-grained strengthening layer and a residual compressive stress field on the substrate surface, significantly improving surface hardness and fatigue resistance. Simultaneously, this invention provides a wear performance prediction method based on ABAQUS simulation. By simulating the ultrasonic shot peening process using DEM-FEM coupling, a fretting wear model is constructed, and energy wear theory is used to predict the friction coefficient and wear rate. This method achieves four benefits for aluminum alloy surfaces: lubrication and friction reduction, mechanical interlocking, surface strengthening, and fatigue resistance. It can also predict wear performance in advance, guide process optimization, significantly improve R&D efficiency, and reduce experimental costs.

The present disclosure provides a method for preparing a white ceramic coating on a titanium alloy surface and a white ceramic coating, and relates to the technical field of titanium alloy surfaces, and comprises the following steps: mechanically polishing a titanium alloy sample to obtain a polished titanium alloy sample; performing ion nitriding treatment on the polished titanium alloy sample to prepare an ion nitriding layer; the ion nitriding layer only comprises a diffusion layer; and performing micro-arc oxidation treatment on the titanium alloy sample comprising the ion nitriding layer to prepare a white ceramic coating. The present disclosure can prepare a white ceramic coating with high reflectivity.

The application provides a combined rotary target material and a preparation method thereof, and belongs to the technical field of target materials. The preparation method of the combined rotary target material comprises the following steps: sequentially performing first sand blasting treatment, nickel-aluminum alloy electric arc spraying bottoming and plasma spraying of silicon powder on the middle region of a target material back tube to obtain a first intermediate body; sequentially performing second sand blasting treatment and plasma spraying of nickel-aluminum alloy powder on the region of the first intermediate body which is not sprayed with a silicon coating to obtain a second intermediate body; and performing plasma spraying of a silicon-containing composite powder on the nickel-aluminum alloy surface of the second intermediate body to obtain the combined rotary target material. The sand blasting treatment before spraying improves the bonding strength between the target material and the substrate; the bottoming operation is performed in a plasma spraying mode, so that the switching movement of the target material between multiple devices can be reduced; and the nickel-aluminum alloy powder is sprayed before the silicon-containing composite powder is sprayed, so that the possibility of the cracking problem of the target material can be greatly reduced.

The application discloses a kind of amorphous alloy material surface treatment method, amorphous alloy material and electronic equipment, it is related to amorphous alloy material technical field, the amorphous alloy material surface treatment method includes the following steps: obtaining to be treated amorphous alloy base material and amorphous alloy powder, wherein, the surface of the to be treated amorphous alloy base material has pore, the component of the amorphous alloy powder is identical with the component of the to be treated amorphous alloy base material;Using quenching and rapid heating process, the amorphous alloy powder is filled in the pore in the surface of the to be treated amorphous alloy base material after melting, and make the amorphous alloy in molten state rapidly cool, obtain amorphous alloy material, wherein, the heating rate of the amorphous alloy powder is greater than or equal to 10 6 K / s, the cooling rate of the amorphous alloy in molten state is greater than or equal to 3000 ℃ / ms.The application solves the technical problem that there is color difference phenomenon after welding the pores on the surface of amorphous alloy by laser welding in the related art.

This invention discloses a method for preparing an antioxidant coating with a gradient porosity distribution on the surface of molybdenum or molybdenum alloys. Using powder #1, a modified antioxidant inner layer coating is prepared on the surface of a molybdenum substrate via a molten salt method. The composition of powder #1 includes: 35wt%~94.7wt% NaCl-KCl-NaF powder, 0.1wt%~20wt% Na2SiF6 powder, 5wt%~20wt% Si powder, 0.1wt%~10wt% boron source powder, and 0.1wt%~15wt% HfB2 powder. Then, using powder #1... # A slurry was used to prepare an antioxidant outer coating, forming a gradient-pore-distributed antioxidant coating on the surface of a molybdenum substrate; 1 # The slurry comprises: 0.1wt%~40wt% Si powder, 0.1wt%~5wt% ZrB2 powder, 0.1wt%~30wt% Al powder, 0.1wt%~30wt% Al2O3 powder, 0.1wt%~2.5wt% activator, 0.1wt%~1wt% CeO2 powder, 0.1wt%~15wt% MnO2 powder, 8wt%-12wt% polyvinyl butyral powder, and the balance being anhydrous ethanol. This invention yields a gradient porosity coating, whose high-temperature oxidation resistance meets service requirements.

This invention discloses an antibacterial and antistatic semiconductor coating, its preparation method, and its application, belonging to the field of aluminum alloy surface treatment technology. A bipolar pulsed power supply is used, with the aluminum alloy as the cathode and a graphite plate as the anode. A water / organic mixture solution is used as the electrolyte system. Cathode plasma electrodeposition is performed in constant voltage mode to obtain a semiconductor coating on the aluminum alloy surface. The organic compound is at least one selected from glycerol, ethylene glycol, sorbitol, ethanol, and triethanolamine. The electrolyte system also includes a water-soluble zinc source, a highly selective aluminum ion complexing agent, a doping modifier, a conductive salt, and a pH adjuster. The semiconductor coating provided by this invention exhibits long-term stable antibacterial and antistatic properties. It is mainly composed of inorganic ZnO functional components with both antibacterial and conductive properties. The antistatic properties of the coating are regulated by introducing dopant ions, ensuring the long-term stable antibacterial and antistatic functions of the coating.

The application discloses a kind of sealing methods for the micro-arc oxidation film layer of aluminum alloy surface, belong to surface engineering technical field, to solve the problem that traditional sol sealing agent is difficult to effectively wet, penetrate its micron level pore due to the low surface energy of micro-arc oxidation film, poor hydrophilicity.The sealing method of the application comprises the following steps: a) cleaning and drying the aluminum alloy workpiece that has completed micro-arc oxidation;B) surface activation treatment is carried out to the aluminum alloy workpiece after drying, and the surface activation treatment uses low-temperature plasma treatment or ultraviolet ozone treatment;C) the aluminum alloy workpiece after surface activation treatment is immersed in sealing agent for sealing treatment;D) heat treatment is carried out to the aluminum alloy workpiece after sealing treatment, so that the sealing agent is solidified.

The warning sign designed in this invention integrates passive optics (fluorescence), active color-changing (moisture-sensitive color-changing), and wind-driven sound generation mechanisms. It is technically highly feasible and aligns with the trend of geological disaster early warning evolving towards intelligence and automation. Its greatest advantage is that it is "unreliant on external power," relying entirely on natural physical and chemical reactions for power supply, thus ensuring high reliability and making it ideal for deployment in remote areas where power supply is difficult. Furthermore, by preparing a coating on the aluminum alloy surface to obtain a composite material as the substrate, the lifespan of the warning sign is significantly improved.

The application relates to the technical field of alloy surface treatment, and particularly discloses a treatment agent for preventing corrosion on the surface of a zinc-aluminum-magnesium alloy and a preparation method thereof. The treatment agent for preventing corrosion on the surface of the zinc-aluminum-magnesium alloy is composed of a treatment agent main component and a treatment agent curing component, wherein the treatment agent main component comprises the following raw materials: bisphenol A type epoxy resin, anti-oxidation toughening cellulose, composite solvent, leveling agent and defoaming agent; the treatment agent curing component comprises the following raw materials: tackifying curing compound and composite solvent. The treatment agent prepared by the application has excellent adhesion, toughness, oxidation resistance and corrosion prevention effect when acting on the surface of the zinc-aluminum-magnesium alloy, can effectively protect the zinc-aluminum-magnesium alloy, and makes the zinc-aluminum-magnesium alloy have a long service life.