32 results about "Ti-Cu alloy" patented technology

The invention discloses a nanoporous TiO2 film on a Ti-Cu alloy surface. With thickness of 5 micrometers, the film has a smooth surface which is not damaged, and the nanopores present an interconnected bicontinuous structure appearance. With an aperture of 50-100nm, the nanopores are in uniform distribution. The preparing method of the film consists of: preparing an amorphous Ti30Cu70 alloy strip; coating the two sides of the strip with silica gel; preparing a 30 mass percent nitric acid solution as an electrolyte solution, utilizing a voltage source meter or an electrochemical workstation to conduct a pulsed dealloying process, with the parameters set as the following: an initial voltage of 1V, a pulse amplitude of 300-400mV, a pulse voltage applying time of 0.5s, a stopped voltage applying time of 0.5-1.0s, a cycle period of 7022-10800 times, and an electrode area of 0.8cm<2>. The preparation method of the invention has the advantages of simple preparation process, low cost, no ''impurity'' introduced during preparation, and no danger, thus being suitable for large area production and application.

A preparation method of an anti-microbial type medical porous Ti-Cu alloy having bioactivity comprises the steps of (1) preparing powder, wherein titanium powder, copper powder and magnesium powder are mixed according to a certain mass percentage ratio; (2) conducting ball milling, wherein the mixed powder is placed in a stainless steel ball mill tank for ball milling; (3) conducting blank pressing, wherein the ball milled powder material is mold-pressed into a pressed blank at the pressure of 500-1000 MPa; (4) conducting furnace charging, wherein the obtained pressed blank and a microwave-assisted heating material are placed in a polycrystal mullite fiber heat preservation barrel, and the polycrystal mullite fiber heat preservation barrel is placed in a microwave sintering furnace; (5) obtaining the ideal anti-microbial type medical porous Ti-Cu alloy having the bioactivity through microwave sintering. The preparation method of the anti-microbial type medical porous Ti-Cu alloy havingthe bioactivity has the technical effects that the preparation method is easy and convenient to perform, the sintering period is short, the energy consumption is small, the preparation method is suitable for industrial production, the sintered porous Ti-Cu alloy has excellent bioactivity and anti-microbial property and can be used as repair and substitute materials of bones, joints, artificial tooth roots and other hard tissue.

The invention relates to an aging-reinforced titanium-copper alloy. The aging-reinforced titanium-copper alloy is characterized by being prepared from the compositions in percentage, by weight, 2.0-4.0% of Ti, 0.5-2.0% of Ni, 0.05-0.5% of P and the balance copper and unavoidable impurities. By controlling the matching ratio of Ni to P to Ti, the yield strength of the aging-reinforced titanium-copper alloy is up to 900-1150 MPa, the conductivity is up to 12-22% IACS, and excellent bending machinability, high-temperature softening resistance and welding properties are obtained. The aging-reinforced titanium-copper alloy is especially applicable to the fields of connectors, terminals, relays and the like.

A kind of rotor slot wedge of dynamotor made of Be-Ni-Ti-Cu alloy, the character of it is: the weight percent of the main components are Be 0.10-0.30%, Ni 1.50-2.50%, Ti 0.40-0.60%, Cr 05-0.15%; the weight percent of impure elements: Mn<=0.04%, Pb<=0.01%, Zn<=0.50%, Fe<=0.20%, Sn<=0.20%, Al<=0.04%, Bi<=0.005%, Mg<=0.005%, the rotor slot wedge of dynamotor is made out by smelting, cast, hot forging, cold-forming, heat treatment, and machining technology. The advantage of this patent is that it owns great mechanical property both at normal temperature and high temperature, and great electric ability, the cost of it is low, and it is easy to confect, and the internal soundness is well, and the percent of pass at supersonic flaw detecting is high.

The invention discloses a titanium dioxide nano thin film composite material and a constant-current preparation method of the composite material. The constant-current preparation method comprises the steps of: placing an amorphous Ti-Cu alloy in an electrolysis solution, and carrying out dealloying process by utilizing a three-electrode system and adopting a constant-current method, wherein a netted platinum electrode is used as a counter electrode, a saturated calomel electrode is used as a reference electrode, the amorphous alloy Ti-Cu is used as a working electrode, the current density is 0.8-2mA/cm<2>, the dealloying time is 3600-10800s, the electrolysis solution is 20-50wt% nitric acid aqueous solution, and the electrolysis solution temperature is 50-80 DEG C. According to the technical scheme disclosed by the invention, Ti-Cu amorphous alloy strips are placed in the electrolysis solution, and dealloying is carried out by three-electrode system reaction, thus a nano porous thin film structure with uniform pore distribution is prepared, the implementation cost is low, the operation is simple and convenient, the reaction temperature is low and the method is an efficient and economical synthesis method.

This invention discloses a method for producing Ti-Cu alloy material. The Ti-Cu alloy material is produced from Ti 5.8-6.1% and Cu 93.9-94.2% by smelting, casting, and rolling. Besides, a third element (one of Al, Fe, Cr and Cd) 0.5-1% can also be added to form a ternary metal. The method comprises: smelting the above components, casting, homogenizing, hot-rolling, quenching, washing with acid, cold-rolling, and aging. The obtained Ti-Cu alloy material has such advantages as high strength, high elasticity, high wear resistance, high corrosion resistance, and high weldability.

The invention provides a copper-copper metal thermal pressing bonding method. The method at least comprises the following steps: first of all, providing a first wafer to be bonded and a second wafer to be bonded, wherein the first water comprises a first substrate, a first passivation layer and a first Ti-Cu alloy film, and the second wafer comprises a second substrate, a second passivation layer and a second Ti-Cu alloy film; then, performgin thermal pressing bonding on the surface of the first Ti-Cu alloy film of the first wafer and the surface of the second Ti-Cu alloy film of the second wafer; and finally, performing annealing processing in a protective gas to enable Ti atoms in the first Ti-Cu alloy film to diffuse towards the surface of the first passivation layer and Ti atoms in the second Ti-Cu alloy film to diffuse towards the surface of the second passivation layer so as to finally form Ti adhesive/barrier layers on the surfaces of the first passivation layer and the second passivation layer, and Cu atoms diffusing towards a bonding surface so as to realize bonding. According to the method provided by the invention, before the bonding, what is needed is only to respectively perform co-sputtering on the two substrates for once, such that the sputtering frequency is reduced by half, the process is relatively simple, the reliability is good, the technical cost is quite low, and finally, the Ti adhesive/barrier layer are formed through diffusion after the annealing processing, and the copper bonding effect is better.

The invention belongs to the technical field of metal materials, and discloses an antibacterial material additive material, a preparation method and application. Titanium or titanium alloy spherical powder and copper spherical powder are mixed according to a specific proportion, or a titanium-copper alloy ingot in a specific proportion is utilized, and spherical alloy powder is prepared through a plasma rotating electrode and a plasma atomization or gas atomization method; raw material powder is processed by using a laser melting or electron beam additive manufacturing technology; heat treatment is carried out on a processed product, the product is cooled in a furnace, and then hot isobaric treatment is carried out; homogenization treatment is carried out; and timeliness processing is carried out. According to the alloy additive manufacturing production method and a post-treatment process, compared with an antibacterial coating, common titanium and titanium alloy can have a long-acting antibacterial effect. A mixed material in a specific proportion can be processed by utilizing the advantages of additive manufacturing, a traditional titanium-based material is endowed with the antibacterial characteristic, and the mechanical property and the antibacterial effect of a part can be balanced through the post-treatment process.

The invention discloses a preparation method of Ni-Ti-Cu alloy tooth arch wires. The material of the tooth arch wires is a Ni-Ti-Cu alloy and comprises, by weight, 50.14% of Ni, 43.54% of Ti and 6.26% of Cu. Ni-Ti-Cu cast ingots are prepared by adoption of vacuum self-consuming electric arc smelting, and then forging, rolling, wire drawing and sizing are conducted to prepare the Ni-Ti-Cu tooth arch wires. The method has the advantages that stress needed by martensite phase variant reorientation is low, thus martensite variant reorientation is easily conducted, and deformation stress or the yield strength under the martensite state is lowered; through adding of the Cu, the yield strength of a base phase B2 can be improved, so that the yield strength difference of the base phase and a martensite phase is increased, and phase change cyclic behavior of the base phase is reinforced; the Ni-Ti-Cu alloy is small in super-elasticity stress lagging and thus is a good super-elasticity material; and in Ni-Ti-Cu, the content of the Cu is, by atom percentage, 5-10% so as to replace Ni, and the raw material cost can further be greatly reduced.

The invention discloses a titanium-copper alloy explosion-proof material and a preparation method thereof. The material comprises the following components of, in percentage by weight, 30%-40% of titanium-copper alloy, and 60%-70% of graphene; and the titanium-copper alloy comprises the following components of, in percentage by atomic weight, 60%-65% of titanium, 30% of copper, and 5%-10% of nickel. The preparation method comprises the following steps of 1) taking high-purity titanium, copper and nickel as raw material, carrying out high-temperature smelting in an argon atmosphere, grinding toremove oxide skin, and grinding into powder to obtain alloy powder; 2) preparing natural graphite or artificial graphite into powdery graphene; and 3) mixing part of the alloy powder with powdery graphene, loading the mixture into a mold, and sintering to obtain a preform; and placing the preform into a crucible, vacuumizing, heating the remaining alloy powder to be molten, introducing the alloy melt to permeate the preform, and cooling to room temperature. The titanium-copper alloy and the graphene are prepared into the explosion-proof material in the modes of combined mixed sintering, alloymelt infiltration and the like, the overall strength of the material can be improved, and the explosion-proof material has excellent explosion-proof performance.

The invention relates to biomedical titanium-copper microsphere assembly type microsphere powder, biomedical titanium-copper alloy and a preparation process. According to the biomedical titanium-copper microsphere assembly type microsphere powder provided by the invention, a body is spherical titanium powder particles, a plurality of cellular copper particles uniformly coat the spherical surface of the body to form a microsphere collection, wherein the particle size of the spherical titanium powder particles is less than 35 microns, and the particle size of the copper particles is less than 3 microns. The titanium-copper alloy prepared from the microsphere powder is composed of an alpha-Ti matrix phase and a Ti2Cu phase, the Ti2Cu phase is finely dispersed and uniformly distributed in the alpha-Ti matrix phase, then the antibacterial property of the material can be improved, the density of the titanium-copper alloy reaches 98% or above, and the compressive yield strength reaches 860 MPa. The preparation process provided by the invention is simple, the production efficiency is high, the alloy cost is relatively low, meanwhile, the nonuniformity of components of the titanium-copper alloy in the traditional preparation method can be obviously improved, and then the mechanical property and the antibacterial property are improved.

The invention discloses a rare earth nitride dispersion strengthening titanium-doped copper alloy and a preparation method thereof. The copper alloy is composed of copper, rare earth nitride and titanium. The copper alloy comprises, by mass, 70%-80% of copper, 0.1%-8% of rare earth nitride and the balance titanium. The method comprises the following steps: blowing rare earth nitride particles into a copper melt, stirring until the rare earth nitride particles are uniformly mixed, spraying titanium powder into a copper alloy melt, cooling the copper alloy melt, carrying out pressure casting to obtain a green body sample, and carrying out degassing and thermal aging treatment on the green body. The copper alloy prepared by the invention has the characteristics of high hardness, high wear resistance and high electric conductivity and heat conductivity.

The invention discloses a titanium-copper alloy etching solution and an etching method. The etching solution comprises inorganic acid, copper salt and a corrosion inhibitor. The inorganic acid is used for providing hydrogen ions in an acidic environment, and the acidic environment is beneficial to excitation of oxidability of copper ions in the copper salt, so that the copper ions react with the titanium-copper alloy, and etching of the titanium-copper alloy is achieved. After the copper salt is dissolved, copper ions have strong oxidizing property in an acid environment and can react with the titanium-copper alloy, so that etching of the titanium-copper alloy is realized. The corrosion inhibitor is added into the etching solution, the corrosion inhibitor can be dissolved in the etching solution and has good affinity with the titanium-copper alloy, the corrosion inhibitor can be attached to the side wall of the titanium-copper alloy in the etching process, contact between the side wall and the etching solution is reduced, then lateral erosion is reduced, and the etching precision is improved.