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2767 results about "Titanium powder" patented technology
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Titanium powder metallurgy (P/M) offers the possibility of creating net shape or near net shape parts without the material loss and cost associated with having to machine intricate components from wrought billet. Powders can be produced by the blended elemental technique or by pre-alloying and then consolidated by metal injection moulding, hot isostatic pressing, direct powder rolling or laser engineered net shaping.
Water-borne acrylic type water-proof heat-insulating paint
The invention provides water-borne acrylic water-proof heat insulating paint, which belongs to the field of building materials and can be applied to surfaces of building roofs, metal sheets, ceramic tiles, glazed bricks, decorative tiles and other materials. The invention provides the water-borne acrylic type water-proof heat-insulating paint by using copolymer latex which is cool mixed by elastic acrylic copolymer emulsion, VAE emulsion and an organic silicon water-proof material as a base material, and hollow glass beads in low heat conductivity, hollow ceramic beads and other heat insulating materials, titanium powder, zinc oxide, ultrafine mica and other reflecting materials, and corrosion-resistance blanc fixe, wollastonite and the like as pigments. In the paint, the solar reflectivity is more than or equal to 0.83, the semi-sphere reflectivity is more than or equal to 0.85, weather resistance aging time is 100 hours without fading or pulverizing, and water-proof performance, such as water tightness, low temperature flexibility, tensile strength and the like, can achieve II type product index requirement of JC / T864-2008. Besides the function of decorating materials, the paint has the functions of water proofing and heat insulation.
Owner:CHINA BUILDING MATERIALS ACAD
Titanium powder, titanium material, and method for producing titanium powder containing solid-soluted oxygen
ActiveUS10307824B2High strengthImprove ductilityTransportation and packagingMetal-working apparatusOxygenSolid solution
Owner:KONDOH KATSUYOSHI +1
Titanium powder containing solid-soluted nitrogen, titanium material, and method for producing titanium powder containing solid-soluted nitrogen
ActiveUS10213837B2Low ductilitySpread evenlyTransportation and packagingMetal-working apparatusSolid solutionTitanium powder
Owner:HI-LEX CORPORATION +1
Device and method for preparing spherical titanium powder and titanium alloy powder through gas atomization
ActiveCN104475744AAvoid pollutionHigh sphericityGranulation by liquid drop formationHigh frequency powerTitanium alloy
The invention relates to a device and method for preparing spherical titanium powder and titanium alloy powder through gas atomization, which belongs to the field of powder metallurgy industry. The device comprises a vacuum chamber, a continuous feeder for titanium or titanium alloy wires / rods is arranged outside the vacuum chamber, a dynamic sealing device is arranged at the top of the vacuum chamber, a metal straightening device is arranged inside the vacuum chamber, an atomizing chamber is arranged below the vacuum chamber, a gas atomization nozzle is installed between the atomizing chamber and the vacuum chamber, the center hole of the nozzle is internally provided with a wire / rod guiding device, a high-frequency smelting coil is installed below the nozzle, wherein the dynamic sealing device, the straightening device, the guiding device and the high-frequency smelting coil are installed on the same axis; a heat dissipation cover is installed inside the atomizing chamber, a protective cover is arranged at the top of the heat dissipation cover, and the centers of the heat dissipation cover and protective cover and the center of the high-frequency smelting coil are on the same axis; a powder collecting pot is arranged below the atomizing chamber. By means of controlling the diameters of the wires, the atomizing gas pressure and the power of a high-frequency power supply, titanium and titanium alloy powder with different particle sizes and particle size distributions can be obtained.
Owner:有研增材技术有限公司
Refractory high-entropy alloy/titanium carbide composite and preparation method thereof
The invention discloses a refractory high-entropy alloy / titanium carbide composite. A refractory high-entropy alloy serves as a matrix phase, and titanium carbide serves as a wild phase; and elements in the refractory high-entropy alloy are selected from at least four kinds of elements of W, Mo, Ta, Nb, V, Ti, Zr, Hf and Cr. A preparation method of the refractory high-entropy alloy / titanium carbide composite comprises the steps that at least four kinds of carbonization metal powder in tungsten carbide, molybdenum carbide, tantalum carbide, niobium carbide, vanadium carbide, the titanium carbide, hafnium carbide, zirconium carbide and chromium carbide are selected and mixed according to the equal molar ratio or the ratio close to the equal molar ratio to form high-entropy matrix powder; and after the high-entropy matrix powder and titanium powder are mixed, alloy mechanization is carried out, then spark plasma sintering or hot-press sintering is carried out, and the refractory high-entropy alloy / titanium carbide composite is obtained. The density and cost of the composite are reduced while the hardness of the composite is improved, excellent high-temperature performance is achieved, and the requirement for manufacturing a high-temperature structural component is met.
Owner:江西咏泰粉末冶金有限公司
Manufacturing method of micro spherical titanium and titanium alloy powder
ActiveCN104475743AFast purification smeltingControlled purification smeltingSpherical shapedTitanium alloy
The invention relates to a manufacturing method of micro spherical titanium and titanium alloy powder, and belongs to the technical field of metal and alloy powder manufacturing. The manufacturing method comprises the steps that a titanium and titanium alloy wire or bar is manufactured by using sponge titanium in the national standard TA1 grade as a raw material; forvacuum treatment is conducted on a powder manufacturing device, and then the powder manufacturing device is filled with inert protective gas; the raw material wire or bar is fed into a smelting chamber through a continuous feeding mechanism and a straightener, the raw material is heated and smelted through a high-frequency induction coil, and the alloy raw material is molten to form stable liquid flow or drip flow; supersonic atomizing nozzles in atomizers are opened, and breakage, dispersion and forced cooling powder manufacturing are conducted on the molten liquid flow or the drip flow; powder is obtained through a powder collector, and is screened through an ultrasonic vibrating screen to obtain the micro spherical titanium and titanium alloy powder. The micro spherical titanium and titanium alloy powder manufactured through the manufacturing method is small in particle size, high in degree of sphericity, good in liquidity and low in impurity content, and has smooth surfaces.
Owner:有研增材技术有限公司
Method for additive manufacturing
ActiveUS20170341142A1Affect propertyEasily ionizedAdditive manufacturing apparatusSolid state diffusion coatingChemical LinkageHydrogen
A method comprising the steps of: distributing a titanium alloy or pure titanium powder layer on a work table inside a vacuum chamber, directing at least one electron beam from at least one electron beam source over the work table causing the powder layer to fuse in selected locations, distributing a second powder layer on the work table of a titanium alloy or pure titanium inside the build chamber, directing the at least one electron beam over the work table causing the second powder layer to fuse in selected locations, and releasing a predefined concentration of the gas from the metal powder into the vacuum chamber when at least one of heating or fusing the metal powder layer, wherein at least one gas comprising hydrogen is absorbed into or chemically bonded to the titanium or titanium alloy powder to a concentration of 0.01-0.5% by weight of the hydrogen.
Owner:ARCAM AB
Short-flow preparation method of micro-sized spherical titanium powder
ActiveCN101716686AReduce dehydrogenation processShort processTransportation and packagingMetal-working apparatusDehydrogenationDie casting
Owner:江苏金物新材料有限公司
Method for preparing powder metallurgy of titanium-aluminium alloy target material
The invention belongs to the preparing field of powder metallurgy, in particular to the powder metallurgy preparing method for titanium aluminum alloy target material. The components of the titanium aluminum alloy target material relates to: Ti to Al is equal to 80 percent to 20 percent or Ti to Al is equal to 20 to 80 percent. The powder metallurgy preparing method for the titanium aluminum alloy target material is to adopt a pulverization method to acquire the titanium aluminum alloy or mix the titanium powder and the aluminum powder and then pre-pressing through powder mounting and isostatic cool pressing, and then carries out hot isostatic pressing forming after the technique of desaeration and finally carries out sintering process and machining to acquire the titanium aluminum alloy target material. Compared with the exiting casting target material, the titanium aluminum alloy target material of the invention has the advantages of good compactness, no air holes, no loosening and aliquation, uniform component, petty crystal particle, big specification dimension, etc., and is suitable for hard coat needed by various tools and dies.
Owner:ADVANCED TECHNOLOGY & MATERIALS CO LTD
Method for manufacturing micro-fine spherical titanium powder
The invention discloses a method for manufacturing micro-fine spherical titanium powder, which includes the steps: using sponge titanium as raw materials, mixing the sponge titanium with hydrogen, holding the positive pressure of the hydrogen at 0.05-0.1MPa, preserving heat at the temperature of 650-730 DEG C, and cooling after ensuring the sponge titanium and the hydrogen to sufficiently react; crushing the hydrogenated sponge titanium with an air-stream mill, controlling the revolving speed of the air-stream mill within 1000r / min-1300r / min, and obtaining titanium hydride powder with a grain size smaller than 45 micrometers by means of crushing; and dehydrogenizing and balling the titanium hydride powder by using radio frequency plasma. The method for manufacturing the micro-fine spherical titanium powder has the advantages that the grain size of the powder and grain size distribution can be effectively controlled, and the powder is low in oxygen content, few in production procedure, low in cost, high in balling rate, fine in sphericility and suitable for industrialized popularization.
Owner:WESTERN BAODE TECH CO LTD
Globular titanium micro-powder or ultra-micro powder preparation device and method
The invention belongs to a process for preparing and processing powder material by taking plasma as a heat source, in particular to a process and an apparatus of metal titanium powder material for powder metallurgy, plasma spray, injection forming, gel injection molding and the like. The invention has the advantages that: the adoption of the high temperature spheroidization and rapid condensation special spheroidization technique can improve the sphericity and purity of titanium powder, and both a reactor and the titanium powder spheroidization process are cooled with circulating water, thereby ensuring the sealing performance of equipment, also reducing the use of inert gases, effectively reducing costs, improving the production efficiency and guaranteeing the purity of spherical titanium powder.
Owner:SOUTHWESTERN INST OF PHYSICS
Denitration catalyst using titanium dioxide as raw material and preparation method thereof
InactiveCN101396657AConvenient sourceLow priceDispersed particle separationMetal/metal-oxides/metal-hydroxide catalystsActive componentEscape rate
The invention belongs to the chemical material field, in particular to a denitration catalyst which uses TiO2 as raw material and a preparation method thereof. The catalyst comprises TiO2, V2O, WO3 and addition agent, wherein, TiO2 which is 70-90 percent of the catalyst in weight is used as carrier, V2O5 which is 0.6-2 percent of the catalyst in weight is used as an active component, WO3 which is 5-10 percent of the catalyst in weight is used as cocatalyst, and the rest is the addition agent. The preparation process of the catalyst comprises: titanium powder doped with tungsten is prepared and is added with the active component and the other addition agents to be dried and calcinated to obtain the denitration catalyst. The raw material source is convenient and the price is low. No pretreatment is required. The preparation process is simple. Through the denitration test under fixed bed simulation flue gas condition, the catalyst is proved to be provided with high denitration activity and low SO2 conversion rate and ammonia escaping rate.
Owner:TSINGHUA UNIV +1
Powder metallurgy titanium alloy and preparation method thereof
InactiveCN101962721AImprove mechanical propertiesImprove performanceCompression moldingLanthanum hexaboride
The invention provides powder metallurgy titanium alloy and a preparation method thereof. The powder metallurgy titanium alloy comprises the following components in percentage by mass: 2 to 7 percent of Al, 2 to 8 percent of Mo, 2 to 6 percent of V, 2 to 10 percent of Ag, 0.1 to 3.0 percent of LaB6 and the balance of titanium and inevitable impurities. The method comprises the following steps of: weighing titanium powder, aluminum powder, molybdenum powder, aluminum-vanadium intermediate alloy powder, silver powder and lanthanum hexaboride powder with certain particle size according to the mass percentage of the components; uniformly mixing the powder by a mixing method; preparing a green compact with a certain shape by a compression molding process; placing the green compact in a vacuum hot pressing sintering furnace to sinter; and cooling the green compact along with the furnace to obtain silver and titanium boride particle-containing powder metallurgy titanium alloy. The technological process is simple; the silver powder is added during the mixing of the materials to improve the molding property of the green compact; the lanthanum hexaboride powder is added to perform reaction in situ so as to generate titanium boride dispersion enhanced matrix alloy; the compactness of the sinter compact is further improved by hot pressing sintering; and thus the novel powder metallurgy titanium alloy with high compactness and high strength is obtained.
Owner:CENT SOUTH UNIV
Copper-based powder metallurgy high speed brake lining
InactiveCN101493127AComply with work performance requirementsEffect of small friction propertiesBraking membersFriction liningBoron nitrideSilicon dioxide
The invention provides a copper based powder metallurgy high speed brake lining, which comprises a steel backing, a brake block, a framework, a spring washer and a swollen tail block. In the course of braking, the brake lining has smaller abrasion loss and can effectively prevent the edge dropping, angle dropping and camber wear of the brake block. The brake block uses copper based powder metallurgy friction material; copper powder, iron powder, tin powder, chromium powder, titanium powder, nickel powder, bismuth meal, graphite, boron nitride, aluminum oxide, silicon dioxide, zirconite and the like are well blended according to the proportion, stamped and sintered on the framework after cold pressing. The copper based powder metallurgy high speed brake lining has the characteristics of high mechanical strength, good thermal conduction, good thermal stability, strong heat-resistant fade performance, long service life, small abrasion on a retarding disc and stable friction performance and the like, and can effectively control very high way trains with 200-300km / h per hour.
Owner:贵州新安航空机械有限责任公司
Graphene-reinforced titanium-based composite and preparation method thereof
The invention discloses a graphene-reinforced titanium-based composite and a preparation method thereof. The preparation method comprises the following steps: S1, weighing titanium powder and graphene nanoflake and carrying out ultrasonic dispersion; S2, subjecting the titanium powder and graphene nanoflake having undergone mixing and dispersion to ball milling; S3, drying and grinding mixed powder formed after ball milling; S4, putting the mixed powder obtained in the step S3 into a graphite die and placing the graphite die in a spark plasma sintering system; S5, carrying out spark plasma sintering on a compacted powder material in the graphite die; and S6, after completion of sintering, cooling a sintered sample to room temperature in a furnace and taking out the sample. The preparation method prepares the graphene-reinforced titanium-based composite with lightweight and high strength and toughness; and according to the method, ultrasonic dispersion and ball milling technologies are employed for powder mixing, then the composite is prepared from the uniformly mixed powder through spark plasma sintering technology, so the advanced composite with lightweight and high specific strength is obtained.
Owner:SUZHOU UNIV
Preparation method of medical porous titanium and titanium alloy
InactiveCN102747245AImprove efficiencyGood mechanical propertiesProsthesisThermal insulationRepair material
The invention discloses a preparation method of medical porous titanium and titanium alloy, which comprises the following steps: proportionally preparing titanium powder, alloy element powder and pore forming agent powder according to needs; carrying out ball milling, mixing and mechanical pressing by a powder metallurgy blank making technique to obtain a blank; putting the blank in a thermal insulation barrel, and putting the thermal insulation barrel into a microwave sintering furnace; and after vacuumizing the furnace chamber to a vacuum degree of 0.1Pa, charging argon with the purity of 99.999% to form cyclic protection, controlling the output power of the microwave sintering furnace at 0.5-3kW, heating to the sintering temperature of 800-1200 DEG C at the heating rate of 5-40 DEG C / minute, keeping the temperature for 5-30 minutes, shutting down the microwave source, and carrying out furnace cooling to obtain the medical porous titanium and titanium alloy. The invention has the advantages of simple preparation method, short sintering period, high efficiency, low sintering temperature and low energy consumption; and the sintered porous titanium and titanium alloy have excellent mechanical properties, and can be used as alternate repair material for bones, joints, artificial radix dentis and other hard tissues.
Owner:HUAIYIN INSTITUTE OF TECHNOLOGY
Nano organic titanium polymer, coating thereof and manufacturing method thereof
The invention relates to a nano organic titanium polymer, a coating thereof and a manufacturing method thereof. A polymerization reaction product is named as a nano organic titanium macromolecular alloy hybrid polymer, which is manufactured by the following steps: mixing pure metal titanium powder as raw material, film-forming resin, solvent medium and the like according to a formulation proportion, filling the mixture into a special closed planetary ball-milling reactor, grinding the mixture at high speed, and thinning the grinded pure metal titanium powder to nano grain diameter to produce nano effect so as to initiate a polymerization reaction under the action of a catalyst along with heat energy accumulation produced by grinding and high pressure produced by vaporization of a solvent.The polymer is an intermediate for preparing the special nano organic titanium painting. Multi-purpose high-performance anticorrosion coatings can be manufactured by compounding of the intermediate polymer and a plurality of film-forming resins.
Owner:陕西至强重防材料技术有限公司
Composite Blade Made by Additive Manufacturing
ActiveUS20150064015A1Improve robustnessEnhance a composite bladeAdditive manufacturing apparatusBlade accessoriesLeading edgeTurbine blade
The present application relates to a blade of a rectifier of a low pressure compressor of an axial turbomachine. The blade can also be a rotor and / or turbine blade. The blade includes a composite material with a matrix and a reinforcement comprising a mesh with rods. The rods of the reinforcement are connected to each other and are distributed throughout the volume between the pressure side surface and the suction side surface of the blade. The mesh forms a three-dimensional structure extending over the majority of the thickness of the blade between the pressure side surface and the suction side surface and / or the majority of the length of the blade between the leading edge and the trailing edge. The present application also relates to an iterative method for manufacturing a blade composite where the reinforcement is formed by additive layer manufacturing based on titanium powder and then placed in an injection mold.
Owner:TECHSPACE AERO
Method for preparing metallic titanium
The invention provides a method for preparing metallic titanium. The method comprises the following steps of: in the process of melting titanium slag by using titanium concentrate, directly adding excessive carbon-containing reducing agents to obtain titanium carbide or introducing nitrogen while directly adding the excessive carbon-containing reducing agents to prepare titanium nitride or titanium carbonitride in the melting process of the titanium slag; electrolyzing molten salts containing low-valence chloride of titanium to obtain metallic titanium powder by taking the prepared titanium carbide, the titanium nitride or the titanium carbonitride as a soluble anode and a metal material as a cathode; in addition, further electrolyzing and refining products obtained in the later period of the electrolysis to obtain high-purity titanium. The method has the advantages of simple process, low raw material cost, low energy consumption, small investment in permanent assets and the like. In addition, the prepared metallic titanium has high purity and ferrotitanium can be prepared by further electrolyzing residual anode titanium powder remained by the anode.
Owner:PANZHIHUA IRON AND STEEL +2
Plasma atomization method and apparatus for preparing pure titanium or titanium alloy powder
The invention relates to a plasma atomization method and apparatus for preparing spherical pure titanium or titanium alloy powder, and belongs to the technical field of preparation of titanium or titanium alloy powder. The plasma atomization method for preparing pure titanium or titanium alloy powder comprises the following steps of (1) preparing a titanium wire or titanium alloy wire with the diameter ranging from 3 millimeters to 20 millimeters, (2) using a plasma torch to fuse and atomize the titanium wire or titanium alloy wire in an atomization bin with an argon atmosphere to obtain atomized pure titanium particles or titanium alloy particles, and (3) feeding argon flow with the temperature ranging from 300 DEG C to 500 DEG C into the atomization bin, carrying out laminar cooling on the atomized pure titanium particles or titanium alloy particles to obtain pure titanium or titanium alloy powder. The obtained powder is good in degree of sphericity and low in the content of satellite balls, and has the advantages of being uniform in size distribution, high in purity and degree of sphericity, good in liquidity, low in oxygen content and impurity content, free of bond or cluster phenomenon and the like. The prepared titanium powder can be widely applied to the forming manners such as metal additive manufacturing, powder injection moulding and hot isostatic pressing for manufacturing parts with high precision.
Owner:OPTIMAL MATERIAL TECH CO LTD
Rapid thermal pressed sintering molding process for titanium-aluminum alloy targets
ActiveCN101524754AUniform compositionHigh densityVacuum evaporation coatingSputtering coatingRapid prototypingTitanium powder
The invention discloses a rapid thermal pressed sintering molding process for titanium-aluminum alloy targets. A rapid thermal pressed powder molding process is adopted to sinter and mold materials under the combined action of heat and force, and the characteristic that aluminum in the Ti-Al mixture has a low melting point is utilized to bond titanium powder together so as to obtain needed titanium-aluminum alloy targets with various components; and accordingly, titanium-aluminum alloy targets with various components in various dimensions can be prepared, have high compactness, small grains and even components and can satisfy the requirements of large-scale industrialization. The rapid thermal pressed sintering molding process for the titanium-aluminum alloy targets has the advantages of short flows, low cost, hardly oxidated powder, high compactness, good filming effect, even components and large dimensions.
Owner:HUNAN HYDRO DYNAMIC NEW MATERIAL CO LTD
Graphene reinforced titanium-based composite and preparation method thereof
The invention relates to a graphene reinforced titanium-based composite and a preparation method thereof and belongs to the field of composites. The preparation method of the composite comprises the following steps of mixing graphene powder with absolute ethyl alcohol, then conducting ultrasonic dispersion, adding titanium powder in the stirring process, and obtaining mixed slurry; transferring the obtained mixed slurry into a ball milling pot, and conducting ball milling; removing the absolute ethyl alcohol from the slurry obtained after the ball milling, and obtaining powder; drying the obtained powder in a vacuum drying oven, and obtaining dried powder; placing the dried powder into a graphite die, introducing argon into a hot pressing furnace, applying 2-2.12 t of pressure to the graphite die, conducting heating till the temperature reaches 900-1300 DEG C at the heating rate of 10-12 DEG C / min, preserving the heat for 1-1.5 hours, conducting natural cooling till the room temperature is reached, and obtaining the graphene reinforced titanium-based composite, namely the product in the graphite die. The preparation method is simple in process, graphene is distributed uniformly in the obtained composite, and the impurity content is low.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Preparation method of high-purity micro-fine low-oxygen titanium powder
The invention provides a preparation method of high-purity micro-fine low-oxygen titanium powder, which belongs to the technical field of powder preparation in the powder metallurgy process. The preparation method is characterized by combining hydrogenation and dehydrogenation with a jet milling process, firstly carrying out hydrogenation treatment on a titanium sponge to prepare titanium hydride powder, then utilizing a jet mill to break the titanium hydride, then carrying out vacuum dehydrogenation, and finally utilizing the jet mill to carry out breaking gradation and vacuum package and obtaining a titanium powder product. Compared with the traditional ball milling process, the jet milling process causes no pollution, and iron impurities caused by collision of steel balls in the ball milling process can be avoided; due to jet milling and high-vacuum dehydrogenation treatment, the content of oxygen can be controlled to be lowest, and the powder taking and packaging operations are respectively carried out in a glove box, so that the powder and the air are isolated in the whole process, and further, the prepared high-purity micro-fine low-oxygen titanium powder is prepared.
Owner:UNIV OF SCI & TECH BEIJING
Preparation method of aluminum-based boron carbide neutron absorption composite material
The invention relates to a preparation method of an aluminum-based boron carbide neutron absorption composite material. The preparation method comprises the following steps of: according to the characteristics of a neutron absorption composite material, grinding, blanking, cold-pressing, baking, hot-pressing raw materials of aluminum powder, silica powder, titanium powder and boron carbide powderby using a powder metallurgic method to prepare the aluminum-based boron carbide neutron absorption composite material in a vacuum state. The tempering quantitative treatment is carried out on the aluminum-based boron carbide neutron absorption composite material so that chemical and physical properties of the aluminum-based boron carbide neutron absorption composite material are more stable. Thepreparation method has the advantages of advanced and reasonable process, continuity and compact, detailed and accurate data, reasonable material proportioning, stable chemical and physical properties and mechanical property and favorable product purity as high as 99.5% and is ideal. Various neutron absorption parts can be prepared by using the aluminum-based boron carbide neutron absorption composite material.
Owner:TAIYUAN UNIV OF TECH +1
Pure titanium powder forming method based on selected area laser melting technology
InactiveCN103962556AIncrease flexibilityImprove dynamic performanceIncreasing energy efficiencyMechanical propertyTitanium powder
The invention discloses a pure titanium powder forming method based on a selected area laser melting technology. The method comprises the steps that A. an optimizing comparison method is used for obtaining the optimum machining parameters of pure titanium powder forming; B. a three-dimensional model of a part structure which needs to be manufactured is established; C. the established three-dimensional model is subjected to layering preprocessing; D. the obtained optimum machining parameters are used as 3D printing parameters, the three-dimensional model after layering preprocessing is subjected to layering processing, and accordingly printing files needed by 3D printing are generated; and E. the generated printing files are guided into 3D printing equipment, and pure titanium powder is used as forming materials for 3D printing. The method is based on the selected area laser melting technology, metal parts of various structures can be accurately manufactured according to practical needs, the optimizing comparison method is used for obtaining the optimum machining parameters of pure titanium powder forming, different optimum machining parameters can be set according to practically-needed mechanical property situations, flexibility is high, and dynamic performance is good. The pure titanium powder forming method can be widely used in the field of automation control.
Owner:GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
Biomedical porous pure-titanium implant material and preparation method thereof
InactiveCN104646669AImprove compactnessImprove mechanical propertiesSelective laser meltingDot matrix
The invention discloses a preparation method of a biomedical porous pure-titanium implant material. The method comprises the steps of S1, constructing a three-dimensional model of the implant material through drawing software, slicing through layering software, conveying the obtained two-dimensional section information to a computer control system of an SLM former, and providing a laser scanning route; S2, paving a layer of titanium powder being 30 to 70 microns in thickness on a workbench of the SLM former through a powder paving layer; S3, performing selective laser meting for the titanium powder through a laser beam under the conditions that the power is 90 to 100W, the scanning spacing is 0.10 to 0.20mm, and the scanning speed is 275 to 540mm / s to obtain a layer of sections of the implant material, and synchronously lowering down the worktable in a distance equal to the height of a layer of powder; S4, repeating the steps 2 and 3 until the three-dimensional model of the implant material is formed; S5, automatically stopping working by the SLM former, cooling the three-dimensional model to reach room temperature, then performing sand blasting to obtain the porous pure-titanium implant material; the three-dimensional model is a porous structural mode using a tetrakaidecahedron unit as a dot matrix and formed by repeatedly accumulating the tetrakaidecahedron units.
Owner:GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
Selective laser melting forming method for preparing titanium alloy component
ActiveCN104174845AEasy to peel offLow costMetallic material coating processesSelf-propagating high-temperature synthesisSelective laser melting
The invention provides a selective laser melting forming method for preparing a titanium alloy component. The method comprises the steps as follows: firstly, after being subjected to ball-milling and mixing, titanium alloy powder is delivered to a selective laser melting quick forming device, and the titanium alloy component is formed according to a component CAD image imported into the selective laser melting quick forming device; secondly, during a forming process, a mixture of 35-45% of nitrogen and 55-65% of argon is input by the flow rate of 3-5 liter per minute at the same time, a self-propagating high-temperature synthetic reaction is performed on the titanium and the nitrogen under the temperature ranging from 1220 DEG C to 1480 DEG C so as to generate titanium nitride, and titanium carbide is generated through the reaction of the titanium and the carbon in graphite under the temperature ranging from 1260 DEG C to 1523 DEG C under the argon condition; thirdly, the titanium nitride and the titanium carbide generated from the reactions are melted with the titanium alloy component as an organic whole; fourthly, the formed titanium alloy component is subjected to segmental cooling. Through adopting the technical scheme of the method, the generated titanium alloy component has better abrasive resistance and corrosion resistance, and besides, the fact that the film layers of the traditional titanium nitride and titanium carbide composite coatings are easy to peel off from the titanium alloy is avoided, and the surface of the titanium alloy is not needed to be subjected to coating and anticorrosive treatment additionally, so that the cost is saved, and no other additional processing procedures are required.
Owner:南京博乔机械有限公司
Method for preparing nano-crystal lithium-titanium composite oxide
InactiveCN101058438ARich reservesReserves are cheapNanostructure manufactureCell electrodesCapacitanceWater baths
The invention discloses a making method of nanometer crystal Li-Ti composite oxide, which comprises the following steps: adopting titanium powder or titanium compound as raw material; blending the materials with 30% hydrogen peroxidate under low temperature; adding certain quantity of lithium salt solution and moulder; stirring evenly; reacting under water bath condition at 50-100 deg. c completely; drying the composite system directly to produce predecessor; proceeding heat disposal for the predecessor at 200-400 deg. c for 2-6h; heating to 600-1000 deg. c; sintering 8-36h; cooling; grinding; obtaining the nanometer crystal Li-Ti composite oxide with spinel structure and the content of Li4Ti5O12 over 90%; controlling the even grain size of the product between 15nm and 100nm and specific surface area between 10 and 100m2 / g due to different aperture shape of moulds, sintering time and temperatures; making the reversible specific capacity of the product over 160mAh / g under 0. 1C charging and discharging condition; keeping the capacity maintaining rate between 50% and 70% under discharging condition at 100deg. c as ideal negative electrode material of lithium ion dynamic battery and lithium ion super-capacitance.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Manufacturing methods of tungsten-titanium alloy target billet and target material
ActiveCN102400004AUniform microstructureHigh densityVacuum evaporation coatingSputtering coatingSputteringTitanium alloy
The invention provides manufacturing methods of a tungsten-titanium alloy target billet and a target material. The manufacturing method of the tungsten-titanium alloy target billet comprises the following steps: loading tungsten and titanium powder into a mold; and carrying out a cold-press moulding process and a vacuum hot pressed sintering process so as to prepare the tungsten and titanium powder in the mold into the tungsten-titanium alloy target billet, wherein the parameters of the vacuum hot pressed sintering process are as follows: the vacuum degree is less than or equal to 100Pa, the pressure is 20-30MPa, the sintering temperature is 1300-1600 DEG C and the sintering time is 3-12 hours. By utilizing the manufacturing method of the tungsten-titanium alloy target billet provided by the technical scheme of the invention, the obtained tungsten-titanium alloy target billet is uniform in microstructure and high in compactness, has no cracks and accords with semiconductor sputtering; and the tungsten-titanium alloy target billet obtained by utilizing the manufacturing method of the tungsten-titanium alloy target billet is low in cost.
Owner:KONFOONG MATERIALS INTERNATIONAL CO LTD
Method for preparing medical porous NiTi shape memory alloy by microwave sintering
The invention relates to a method for preparing a medical porous NiTi shape memory alloy by microwave sintering. The method comprises the following steps of: (1) compounding powder: compounding titanium powder, nickel powder and pore-forming agent powder according to certain mass percentage; (2) performing ball milling: putting the compounded powder body into a stainless steel ball milling pot for ball milling; (3) pressing billets: performing mold pressing on the powder materials after the ball milling at the pressure of between 50 and 500 MPa into pressed billets; (4) charging in a furnace:putting the obtained pressed billets and a microwave auxiliary heating material into a polycrystalline mullite fiber heat insulation barrel, and putting the heat insulation barrel into a microwave sintering furnace; and (5) performing microwave sintering. The method has the advantages that: the preparation method is simple and convenient, the sintering cycle is short, the energy consumption is low, the method is suitable for industrialized production, the porous NiTi shape memory alloy obtained by sintering has good mechanical properties, a pore structure is in three-dimensional communication, the pore ratio is controllable between 20 and 80 percent, the pore sizes are uniform and are controllable between 30 and 600 mu m, and the medical porous NiTi shape memory alloy can be used as materials for repairing and replacing hard tissues such as bones, joints, artificial tooth roots and the like.
Owner:NANCHANG HANGKONG UNIVERSITY
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