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1042results about "Surface reaction electrolytic coating" patented technology

Titanium-based implant surface dual drug release system and preparation method and application thereof

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.
Owner:SHANDONG UNIV

High-binding-force antifouling anti-drag coating for titanium alloy base material as well as preparation method and application of high-binding-force antifouling anti-drag coating

The invention relates to the technical field of metal material surface treatment, in particular to an antifouling and anti-drag coating for titanium alloy pipeline binding force and a preparation method and application of the antifouling and anti-drag coating. The preparation method comprises the following steps: carrying out micro-arc oxidation treatment on a titanium alloy to form a ceramic film on the surface of the titanium alloy; the titanium alloy subjected to micro-arc oxidation treatment is subjected to a hydrothermal reaction, and a nanoscale porous thorn microstructure and hydroxyl are introduced to the surface of a ceramic membrane; coating the pre-polymerization liquid on the titanium alloy subjected to hydrothermal treatment, and performing irradiation reaction under ultraviolet light to obtain first network gel; the first network gel is soaked in a beta-sodium glycerophosphate solution, and the ion-covalent double network p (SBMA-co-AAc) / CS-beta-GP DN hydrogel is formed. The stability and durability of the coating prepared by the preparation method provided by the invention are improved, and the coating has long-term stable anti-fouling performance, is strongly combined with a titanium alloy substrate, and has excellent anti-fouling effect and anti-drag effect when being applied to the titanium alloy substrate.
Owner:JIMEI UNIV

Method for producing an abrasion-resistant nanostructure, carrier bodies with such a nanostructure and associated uses

A method for producing an abrasion-resistant nanostructure (40) on a surface (5) of a support body (2) is proposed in order to permanently provide the support body (2) with advantageous surface effects. The method can be used, in particular, to permanently anchor nanostructures (40) to a surface (5) in an abrasion-resistant manner. For this purpose, in a first process step A, the nanostructure (40) is first applied to or produced on the surface (5), in particular by growing it. In a subsequent process step B, the nanostructure (40) produced in step A is then permanently and abrasion-resistantly bonded to the surface (5) by means of a separate embedding layer (20). For this purpose, the embedding layer (20) is produced separately from the already produced nanostructure (40) on, in particular on and / or in, the surface (5).The embedding layer (20) only partially covers the nanostructure (40), so that surface properties of the nanostructure (40) can be at least partially preserved. At the same time, the embedding layer (20) anchors the nanostructure (40) to the surface (5), whereby the embedding layer (20) can grow into the support body (2), in particular through the nanostructure (40).
Owner:NANOSHAPE GMBH

Environment-friendly electrolyte for anodic oxidation of titanium and titanium alloy workpieces and electrolytic coloring method

The invention discloses an environment-friendly electrolyte for anodic oxidation of titanium and titanium alloy workpieces and an electrolytic coloring method. The electrolyte comprises 8-12 parts of lactic acid, 5-10 parts of sodium tartrate, 2-5 parts of sodium bicarbonate and the balance of deionized water. The electrolytic coloring method comprises the steps of pretreatment, anodic oxidation coloring and aftertreatment. The pretreatment comprises alkali washing oil removal, water washing and laser treatment; and an electrolyte mixed by 8-12 parts of lactic acid, 5-10 parts of sodium tartrate, 2-5 parts of sodium bicarbonate and the balance of deionized water is used for anodic oxidation coloring. The post-treatment comprises sealing treatment and drying. According to the technical scheme, the technical problems that the anodic oxidation coloring technology is completely free of fluorine, low in toxicity and safe to operate, and the oxidation waste liquid is free of pollution and easy to treat can be solved, existing pretreatment steps can be simplified, and meanwhile uniform coloring is achieved.
Owner:HANGZHOU HAERS IND CO LTD

Materials and processes for generating radioisotopes

The present disclosure generally relates to materials, processes, generators, and / or systems, for generating radioisotope. The present disclosure also generally relates to ceramic materials comprising radioisotope suitable for use in a radioisotope generator. The present disclosure also generally relates to processes, generators and / or systems, for producing and capturing radioisotope. The present disclosure also generally relates to the preparation of radioisotope solutions for use in radiopharmacy and / or other clinical applications.
Owner:ADVANCELL IPCO US NO 1 PTY LTD

Anode material for adipic acid monoester electrolysis and preparation method thereof

The invention discloses an anode material for adipic acid monoester electrolysis and a preparation method of the anode material, the electrode solves the key problems that a platinum layer is easy to fall off, the catalytic activity is low, the organic matter poisoning resistance is poor and the like of a traditional titanium platinum-plated electrode through multi-scale interface strengthening and nano structure regulation and control; the preparation method comprises the following core steps: constructing a porous ZrO2-TiO2 composite oxide layer on the surface of a titanium substrate by adopting a micro-arc oxidation-hydrothermal composite process, and generating platinum nanoparticles in situ to pre-fill pores, so that the anchoring effect of a platinum layer is remarkably enhanced; depositing a platinum / carbon nano tube (Pt / CNT) composite catalyst layer on the surface of the oxide layer through a pulse-ultrasonic synergistic electroplating technology, wherein the carbon nano tube is used as a conductive framework to inhibit platinum agglomeration; through vacuum annealing and electrochemical activation treatment, the interface bonding force and active site exposure are further optimized; the electrode shows excellent performance in an adipic acid monoester electrolysis system, and efficient electrocatalytic conversion from adipic acid monomethyl ester to dimethyl sebacate is achieved.
Owner:宿迁联盛助剂有限公司

Formation tank aluminum foil cleaning device and formation device

The utility model provides a formation tank aluminum foil cleaning device and a formation device, and belongs to the technical field of electrode foil formation equipment. When an aluminum foil penetrates through the lower portion of a cleaning press roller, pure water is injected into a cleaning tank, the cleaning press roller presses the aluminum foil into the cleaning tank, and the aluminum foil is cleaned with pure water in the forward movement process of the aluminum foil; the cleaning compression roller is provided with a through cavity, pure water enters the cleaning compression roller, and along with rotation of the cleaning compression roller, the water comes out of the water outlet holes to repeatedly clean the surface of the aluminum foil, so that the surface of the aluminum foil is cleaned up, and tank liquid in the formation tank is not prone to being polluted; the aluminum foil sequentially penetrates through the upper portion of the first transmission roller, the lower portion of the cleaning pressing roller and the upper portion of the second transmission roller, the cleaning pressing roller is located below the first transmission roller and the second transmission roller, water obtained after cleaning flows back into the cleaning tank along with the inclination angle of the aluminum foil, and the influence of pure water on the concentration of formation liquid is reduced; and water flowing back to the cleaning tank can be recycled, so that waste is reduced.
Owner:NINGXIA HAILI ELECTRONICS

Preparation method of metal surface lattice passivation corrosion-resistant film

The invention belongs to the technical field of metal surface treatment, and relates to a preparation method of a metal surface lattice passivation corrosion-resistant film, which comprises the following steps of: polishing and cleaning a metal surface, constructing a three-electrode system, and applying cathode voltage to the metal to carry out surface modification treatment so as to realize metal surface lattice reconstruction, thereby obtaining the metal surface lattice passivation corrosion-resistant film. A compact adsorption layer of corrosion inhibition molecules is formed; the three-electrode system comprises metal as a working electrode, a platinum sheet as an auxiliary electrode and silver / silver chloride or saturated calomel as a reference electrode. According to the method, metal surface lattice reconstruction is achieved through cathode voltage treatment, the technical thought of traditional anodic oxidation is subverted, the passive film forms a regular lattice structure, defects in the film are greatly reduced, permeation of a corrosion medium is effectively blocked, and the corrosion resistance of metal is remarkably improved.
Owner:SOUTHEAST UNIV

Elementary substance / alloy-metal oxyhydroxide anchored noble metal single atom / cluster heterojunction catalyst and preparation method thereof

The invention relates to an elementary substance / alloy-metal oxyhydroxide anchored noble metal single atom / cluster heterojunction catalyst. A preparation method comprises the following steps: 1) dissolving a metal salt A, urea and ammonium fluoride in deionized water to obtain a mixed solution B; 2) performing hydrothermal reaction on the mixed solution B and a carrier to obtain a primary sample 1; 3) performing high-temperature calcination on the primary sample 1 in a mixed atmosphere of hydrogen and argon to obtain a primary sample 2; and 4) putting the preliminary sample 2 into a noble metal compound C solution for vacuum impregnation, taking out the sample after impregnation, and drying to obtain the catalyst. According to the scheme, the metal salt A is used as a metal source of a simple substance / alloy, the metal salt A is subjected to hydro-thermal synthesis to form a metal hydroxide and then subjected to high-temperature calcination reduction, the metal salt A is calcined to form the simple substance / alloy, then the simple substance / alloy is soaked in the precious metal compound solution C to form a metal oxyhydroxide, and meanwhile precious metal single atoms / clusters are anchored; the prepared catalyst is high in activity, and the preparation method is simple.
Owner:GUANGXI UNIV

Method for achieving rapid boronizing of titanium metal surface through electric field induced nanometer assembly in fused salt

The invention relates to the technical field of metal surface treatment, in particular to a method for achieving titanium metal surface rapid boronizing through electric field induction nanometer assembly in molten salt, titanium dioxide powder, boron powder, inorganic salt and a nanometer particle wrapping agent are evenly mixed, and the molten salt containing nanometer TiB2 is obtained after heating reaction. Graphite and a titanium metal part are put into molten salt containing nano TiB2, the graphite serves as a positive electrode, the titanium metal part serves as a negative electrode, the surface area ratio of the positive electrode to the negative electrode is (3-10): 1, the nano TiB2 in the molten salt is assembled on the surface of the titanium metal part under the action of an electric field to form a boronizing layer, and the boronizing speed is 60-500 microns / h. Compared with an existing high-temperature boronizing technology with active boron atoms as a constituent unit, the high-temperature boronizing technology has the advantages that the boronizing speed can be remarkably increased, the high-temperature boronizing treatment time of titanium metal is shortened, energy is saved, cost is reduced, and meanwhile the negative influence of the high-temperature environment on the organization structure and the mechanical property of a titanium metal part is eliminated.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY

Nickel-free hole sealing agent and preparation method thereof

The invention relates to a nickel-free hole sealing agent and a preparation method thereof, and belongs to the technical field of high polymer materials. The nickel-free hole sealing agent comprises the following components in parts by weight: 3-10 parts of cobalt acetate, 1-11 parts of a corrosion-resistant modifier, 1-6 parts of ethylenediamine tetraacetic acid, 3-7 parts of sodium silicate and 5-15 parts of deionized water, an intermediate product containing bis-imidazoline in the corrosion-resistant modifier is tightly adsorbed on the metal surface by virtue of electrostatic attraction and a large pi bond to form a tough protective film, so that a water-phase corrosive medium is effectively isolated, the corrosion speed is remarkably reduced, and meanwhile, the corrosion-resistant modifier has good heat-resistant stability and still has a corrosion inhibition effect in a high-temperature environment; the glycine enables the nickel-free hole sealing agent to better fill tiny holes in the metal surface, so that the surface is flat and smooth, and uniform distribution and permeation of the hole sealing agent are promoted; quaternary ammonium salt destroys cell walls and cell membranes of microorganisms and inhibits growth and reproduction of the microorganisms; the nickel-free hole sealing agent prepared by the invention not only has a good antistatic effect, but also has excellent high-temperature-resistant and antibacterial effects.
Owner:DONGGUAN WEIYUAN TECH CO LTD

Pure titanium micro-arc oxidation coating for vacuum cup and preparation method of pure titanium micro-arc oxidation coating

The invention relates to the technical field of coating materials, and discloses a pure titanium micro-arc oxidation coating for a vacuum cup and a preparation method thereof.The preparation method comprises the following steps that surface pretreatment is conducted, specifically, a pure titanium vacuum cup inner container workpiece is sequentially subjected to degreasing, acid pickling and ultrasonic cleaning; preparing an electrolyte, namely adding 15-25 parts by weight of a silicon-containing compound, 5-12 parts by weight of metal salt, 3-8 parts by weight of an antibacterial agent and 1-5 parts by weight of a stabilizer into deionized water, and controlling the pH value to be 8.5-10.5; and performing micro-arc oxidation treatment. According to the invention, a silane compound in the micro-arc oxidation electrolyte contains a high-activity silanol group which is subjected to condensation reaction with titanium hydroxyl on the surface of a pure titanium substrate under the action of an electric field to form stable covalent bonding, so that the bonding strength of the coating and the substrate is enhanced; metal ions generated by metal salt electrolysis are co-deposited with titanium ions through plasma discharge, a composite oxide structure is constructed, and micro defects on the surface of a titanium substrate are sealed.
Owner:JIANGSU XINUO INDAL

Preparation method for obtaining nano structure with micro-nano morphology through nano treatment of pure titanium surface and application thereof

The invention discloses a preparation method for obtaining a nano structure with micro-nano morphology through nano treatment of a pure titanium surface and application of the nano structure, the preparation method is suitable for nano treatment of pure titanium surfaces of various morphologies, nano holes can be prepared in the pure titanium surfaces of different morphologies, the original micron morphology of the pure titanium surfaces can be reserved as much as possible, and the nano structure has good application prospects. And the preparation of the nano-pores with micro-nano morphology on the pure titanium surface is realized. Besides, nanopores with micro-nano morphology prepared on the pure titanium surface through the method have excellent hydrophilicity and protein adhesion performance, have better mechanical performance compared with traditional nanotubes, and have the potential of being applied to surface treatment of pure titanium implants and abutment. The method has a wide application prospect.
Owner:SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE

Titanium-based implant with antibacterial and osteogenesis promoting performance and preparation method and application thereof

The invention discloses a titanium-based implant with antibacterial and osteogenesis-promoting properties as well as a preparation method and application thereof, and belongs to the technical field of crossing of biomedical materials and biomedicine. The selective laser melting porous titanium alloy is used as a matrix, micro-arc oxidation and hydro-thermal treatment are utilized, and the multifunctional composite coating with the antibacterial function and the osteogenesis promoting function is constructed on the surface of the selective laser melting porous titanium alloy; the microstructure and the biological performance of the coating are regulated and controlled by doping functional elements, so that the antibacterial performance and the osteogenesis promoting performance of the coating are optimized.
Owner:SHANDONG UNIV

Low-corrosivity metal system for capturing CO2 through electrochemical mediation amine regeneration method and preparation method of low-corrosivity metal system

The embodiment of the invention discloses a low-corrosion metal system for capturing CO2 through an electrochemical mediation amine regeneration method and a preparation method of the low-corrosion metal system. The method comprises the steps that metal copper Cu serves as an electrode, and an organic amine MMEA aqueous solution doped with non-corrosion sodium salt serves as an absorbent; the absorbent saturated by CO2 absorption is used as anode liquor; and a solution obtained after a Cu-MMEA complex is fully formed in the anolyte serves as catholyte, and the Cu-MMEA metal system is prepared. According to the preparation method of the low-corrosion metal system for capturing CO2 through the electrochemical mediation amine regeneration method, the non-corrosion salt is introduced into the cathode electrolyte and the anode electrolyte, so that the problem that a chlorine-containing solution and a nitrate-containing solution corrode stainless steel in long-term use is solved, and the performance is not affected.
Owner:HUANENG CLEAN ENERGY RES INST +1

High-strength corrosion-resistant titanium alloy pipe and preparation method thereof

The invention relates to the technical field of titanium alloy pipes, and discloses a high-strength corrosion-resistant titanium alloy pipe and a preparation method thereof.The high-strength corrosion-resistant titanium alloy pipe comprises, by weight, 4%-6% of aluminum (Al), 4%-6% of vanadium (V), 1%-3% of molybdenum (Mo), 1%-2% of chromium (Cr), 0.1%-0.5% of iron (Fe), 1%-2% of zirconium (Zr), 0.5%-1.5% of tungsten (W), smaller than or equal to 0.2% of oxygen (O), smaller than or equal to 0.08% of carbon (C), smaller than or equal to 0.05% of nitrogen (N), smaller than or equal to 0.015% of hydrogen (H) and the balance titanium (Ti). The mass percent of the aluminum is 4.5%-5.5%, the mass percent of the vanadium is 4.5%-5.5%, the mass percent of the molybdenum is 1.5%-2.5%, and the mass percent of the chromium is 1.5%-2%. By improving the formula and optimizing the preparation process, especially by introducing zirconium, tungsten and other elements and adopting the laser cladding technology, the titanium alloy pipe shows more excellent tensile strength, hardness and corrosion resistance in a high-temperature environment; therefore, the titanium alloy pipe has longer service life and higher safety in high-temperature severe environments such as aerospace and ocean engineering.
Owner:CHANGSHU SHUNAGYU COPPER IND CO LTD

Multifunctional bionic coating with osteogenic induction and antibiosis functions and preparation method thereof

The invention discloses a multifunctional bionic coating with osteogenesis induction and antibiosis functions and a preparation method thereof.The multifunctional bionic coating takes a biomedical material as a substrate and sequentially comprises a bone-imitating porous titanium dioxide nanotube layer, a phase-transition lysozyme nano-protein layer chelated with active metal ions and a bone-targeting biomolecule layer from inside to outside; the preparation method comprises the following steps: preparing a hollow bone-imitating porous titanium dioxide nanotube as a storage chamber on the surface of a biomedical material by adopting an anodic oxidation method, then preparing a phase-transition lysozyme protein layer chelated with active metal ions through in-situ self-assembly, and finally chemically connecting limb bone targeting biomolecules on the surface of the protein layer. And forming a bone targeting biomolecular layer. The multifunctional bionic coating can effectively control release of active metal ions, improve osteoblast activity and induce osteoblast adhesion and hydroxyapatite formation, and also has excellent antibacterial performance; and the preparation method is simple and easy to implement, and has a wide application prospect in the field of bone repair materials.
Owner:HUAIYIN INSTITUTE OF TECHNOLOGY

Preparation method and application of electric anode film for efficiently breaking metal organic complex

The invention relates to the technical field of electrocatalytic oxidation and water treatment, in particular to a preparation method and application of an electric anode film capable of efficiently breaking and degrading a metal organic complex. The titanium dioxide nanotube array with ordered height grows on the porous foam titanium substrate in situ, so that the specific surface area is increased, and the service life is prolonged; by doping Ti < 3 + >, the defect that a traditional titanium dioxide nano array tube is poor in conductivity is overcome; meanwhile, lead dioxide is loaded to improve oxygen evolution reaction (OER) potential, OH is efficiently generated, and pollutants are thoroughly mineralized; ferric oxide is further introduced as an active doping agent, so that the leaching of Pb < 2 + > can be improved. Continuous flow stable operation is realized by virtue of a porous film-shaped structure of a porous titanium substrate, the contact oxidation efficiency of pollutants on an anode film interface is increased, and the problem of limited mass transfer of the pollutants is solved; the electric anode film can realize complex breaking and degrading effects on a metal organic complex.
Owner:GUILIN UNIV OF ELECTRONIC TECH

Heating plate, heating plate processing method and process chamber

The invention provides a heating plate, a processing method of the heating plate and a process chamber. The heating disc comprises a heating disc body used for heating a wafer carried on the heating disc body; the aluminum oxide film layer is arranged on the heating disc body, at least one concave pattern area is arranged on the upper surface of the aluminum oxide film layer, and the aluminum oxide film layer is used for dissipating heat of the back face of the wafer in the thin film deposition process and supporting the back face of the wafer through a plurality of non-pattern areas with the same height.
Owner:PIOTECH (SHANGHAI) CO LTD

Micro-arc oxidation surface modified biomedical titanium alloy and preparation method thereof

The invention discloses a micro-arc oxidation surface modified biomedical titanium alloy with good friction corrosion resistance and a preparation method of the micro-arc oxidation surface modified biomedical titanium alloy. The micro-arc oxidation surface modified biomedical titanium alloy comprises a titanium alloy base material and a micro-arc oxidation coating located on the surface of the titanium alloy base material. The micro-arc oxidation coating comprises a compact layer and a sparse layer which are sequentially connected with the titanium alloy base material. EDS element analysis shows that the micro-arc oxidation coating contains a sodium element, an oxygen element, an aluminum element, a phosphorus element, a potassium element, a titanium element and a niobium element. The preparation method comprises the following steps: preparing a micro-arc oxidation electrolyte, wherein the micro-arc oxidation electrolyte comprises sodium titanate, potassium hydroxide, sodium hexametaphosphate and niobium particles; the titanium alloy base material serves as an anode, a stainless steel sheet serves as a cathode, the micro-arc oxidation electrolyte is loaded into an electrolytic cell, then a micro-arc oxidation electrolytic reaction is conducted, and the micro-arc oxidation coating is generated on the surface of the titanium alloy base material.
Owner:SOUTHWEST JIAOTONG UNIV

Method for preparing sintered anode aluminum foil and sintered anode aluminum foil

The invention discloses a method for manufacture sintered anode aluminum foil. Ultrasound was used to change the stacking structure of aluminum powder on the surface of the anode aluminum foil, allowing aluminum powder particles of different sizes to form a gradient distribution in the thickness of the aluminum powder layer, with a gradual decrease in average particle size from bottom to top, larger voids in the lower layer, and denser and larger surface area in the upper layer. Therefore, the specific capacitance and the withstand voltage were improved. By introducing ultrasonic vibration, this invention can simultaneously enhance the specific capacitance and withstand voltage of anode aluminum foil after high-temperature sintering and anodizing, while traditional sintering methods cannot obtain high specific capacitance and withstand voltage performance simultaneously.
Owner:CHONGQING UNIV

Yttrium-based protective film, method for producing same, and member

Provided is an yttrium-based protective film which is excellent in plasma resistance and appearance. An yttrium-based protective film containing yttrium oxide is provided, wherein the yttrium-based protective film has a porosity of less than 0.5 vol % and a Vickers hardness of at least 800 HV. This yttrium-based protective film preferably has a thickness of at least 0.3 μm, a crystallite size of at most 40 nm, a Y2O3 (222) plane orientation of at least 50%, a hydrogen atom number of at most 5.0×1021 atoms / cm3 and a compressive stress of 100 to 1700 MPa.
Owner:AGC INC +1

Aluminum alloy micro-arc oxidation film layer with high plasma fluorination environment resistance and preparation method of aluminum alloy micro-arc oxidation film layer

The invention belongs to the technical field of aluminum alloy surface treatment, and discloses an aluminum alloy micro-arc oxidation film layer with high plasma fluorination environment resistance and a preparation method thereof.The aluminum alloy serves as a matrix, the micro-arc oxidation film layer with high plasma fluorination environment resistance is formed on the surface of the matrix, the thickness of the film layer is 10-50 micrometers, the porosity is 3-5%, and the thickness of the film layer is 10-50 micrometers. The pore diameter is 0.5-1 [mu] m, and the alpha-Al2O3 accounts for 60-80%. According to the film layer, generation of more compact Al2O3 is promoted by adding zircon salt and yttrium salt, the structure and performance of the film layer are improved through introduced zirconium and yttrium elements, and the film layer has the advantages of being high in hardness, low in porosity, high in corrosion resistance and high in wear resistance.
Owner:SHENYANG FORTUNE PRECISION EQUIP CO LTD

Preparation process of nano-particle composite micro-arc oxidation coating suitable for near-beta type titanium alloy

The invention relates to the field of titanium alloy surface treatment, in particular to a preparation process of a nano-particle composite micro-arc oxidation coating suitable for a near-beta type titanium alloy. The preparation process comprises the following steps: step 1, degreasing treatment; step 2, membrane removal treatment; 3, performing nano-particle doping arc oxidation treatment to obtain a hard micro-arc oxidation film; and 4, PTFE paint film spraying treatment is conducted, and the PTFE paint film is obtained. The nano-particle composite micro-arc oxidation coating is of a double-layer structure, after nano-particle doped arc oxidation treatment, an inner-layer wear-resistant hard micro-arc oxidation film with the thickness being 20-30 microns and the average microhardness being 850 HV or above can be prepared on the near-beta-type titanium alloy, wear resistance and sufficient bearing capacity are provided for the composite coating, and by combining with an outer-layer PTFE paint film, the wear resistance of the composite coating is greatly improved. The near-beta type titanium alloy can be endowed with antifriction and wear-resistant double characteristics, a long-acting and lasting wear-resistant effect is provided, and the problem that the surface of a high-proportion beta phase in a matrix is not prone to oxidation is effectively solved.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Methods and systems for high pressure die casting

Methods and systems for high pressure die casting with metal alloys of low silicon content are described. Metal alloys can be modified with nanoparticles to achieve high fluidity and hot cracking resistance to be compatible with high pressure die casting. The die cast metal parts have high strength, high ductility, and high thermal and electrical conductivity. The die cast metal parts can be anodized with different colors.
Owner:METALI LLC

Method and system for high pressure die casting - Patents.com

A method and system for high pressure die casting using low silicon content metal alloys is described. The metal alloys can be modified with nanoparticles to achieve high fluidity and hot tear resistance compatible with high pressure die casting. The die cast metal parts have high strength, high ductility, and high thermal and electrical conductivity. The die cast metal parts can be anodized for different colors. The present invention relates generally to a method and system for high pressure die casting using low silicon content metal alloys, and more particularly to a method and system for high pressure die casting using low silicon content metal alloys modified with nanoparticles.
Owner:METALI LLC

Ruthenium-iridium composite electrode prepared by electrochemical codeposition method as well as preparation method and application of ruthenium-iridium composite electrode

The invention discloses a ruthenium-iridium composite electrode prepared by an electrochemical codeposition method and a preparation method and application thereof, and the preparation method of the ruthenium-iridium composite electrode comprises the following steps: 1) taking a titanium sheet as an anode, taking a platinum electrode or graphite as a cathode, and placing the anode and the cathode in an aqueous solution containing F <-> for anodic oxidation; (2) putting the sample subjected to anodic oxidation into a tube furnace, and carrying out heat treatment in argon or nitrogen to obtain an anatase type TiO2 nanotube; 3) taking the TiO2 nanotube as a cathode, and controlling a certain current in an aqueous solution containing Ru salt, Ir salt, NaNO3 and a small amount of SbCl3 for co-deposition to obtain Ru and Ir nanocrystals; and 4) fully oxidizing the sample deposited with the Ru and Ir nanocrystals at a certain temperature to obtain the ruthenium-iridium composite metal oxide electrode. The method is short in technological process and high in precious metal raw material utilization rate, and the prepared ruthenium-iridium composite metal oxide electrode has the advantages of being high in chlorine evolution electrocatalytic activity and long in service life. As an electrode material, the material has important application prospects and is suitable for the fields of chlor-alkali industry, water treatment, metallurgy and the like.
Owner:ZHEJIANG UNIV OF TECH

3D printing titanium alloy composite coating material and preparation method and application thereof

The invention discloses a 3D printing titanium alloy composite coating material and a preparation method and application thereof, and relates to the technical field of titanium alloy materials. The micro-arc oxidation ceramic coating is formed on the 3D printing titanium alloy matrix, and the Mn-MOF material grows in situ, so that the biocompatibility of the titanium alloy can be remarkably improved, the composite coating not only improves the surface roughness of the 3D printing titanium alloy matrix, but also effectively promotes cell proliferation and adhesion through introduction of Mn, and the surface roughness of the 3D printing titanium alloy matrix is improved. Therefore, the application potential of the titanium alloy in the biomedical field is improved.
Owner:SICHUAN AIZAO FUTURE TECHNOLOGY CO LTD

Metal nanodot array processing method based on electrochemical anodic oxidation technology

The invention discloses a metal nanodot array processing method based on an electrochemical anodic oxidation technology, and relates to a metal nanodot array processing method. The method aims at solving the problems that an existing machining method for an ultra-small-size metal nanodot array is low in stability, structure parameters cannot be flexibly adjusted, and cost is high. The method comprises the following steps: step 1, pretreating an aluminum sheet; 2, the pretreated aluminum sheet is impressed and oxidized, and an anodic aluminum oxide template is obtained; 3, preparing a continuous substrate aluminum cone array by using the anodic aluminum oxide template; 4, pretreating the continuous substrate aluminum cone array to obtain a sample; step 5, endowing conductivity; step 6, carrying out secondary oxidation on the sample; step 7, carrying out light transmission treatment on the sample; 8, PMMA on the surface of the sample is removed. The invention belongs to the technical field of micro-nano processing.
Owner:HARBIN ENG UNIV

Color fixing agent for aluminum alloy anode oxide film and preparation method of color fixing agent

The invention relates to the technical field of aluminum alloy anode oxide film hole sealing, in particular to a color fixing agent for an aluminum alloy anode oxide film and a preparation method of the color fixing agent. 150 parts by weight of the color fixing agent for the aluminum alloy anode oxide film comprises the following components in parts by weight: 15-25 parts by weight of organic acid, 1-3 parts by weight of a surfactant, 0.1-1 part by weight of a corrosion inhibitor, 0.1-1 part by weight of an accelerant, 1-5 parts by weight of a pH value regulator, 2-10 parts by weight of a color fixing auxiliary agent and 20-40 parts by weight of acetone. And the balance of deionized water. The color fixing agent for the aluminum alloy anode oxide film has good color fixing capacity and corrosion resistance.
Owner:HENGYANG MEIRUNDA SURFACE TREATMENT CO LTD