455 results about "Titanium zirconium" patented technology

A prosthetic device having a generally fixed member formed from a low friction material such as ultra-high molecular weight polyethylene and an articulating titanium member, which includes an articular bearing surface. The articular surface is a zirconium oxide layer formed by applying a coating of zirconium onto the titanium member and heating this in an oxygen-containing environment. This causes the zirconium to oxidize and further causes the zirconium to migrate into the titanium member forming a titanium zirconium diffusion layer, which prevents delamination.

The invention discloses a high-nickel positive active material of a surface-modified lithium ion battery. A matrix substance is the high-nickel positive active material LiNixCoyMzO2, the surface of the matrix substance is uniformly coated by a lithium-ion conductor compound which comprises at least one of LiAlO2, Li4Ti5O2 and Li2ZrO3; the content of the total impurity lithium in the positive active material is below 0.085%. The invention also discloses a preparation method of the positive active material. The preparation method comprises the following steps of: firstly mixing the matrix substance with an organic solution containing aluminum, an organic solution containing titanium or an organic suspension liquid containing aluminum/titanium/zirconium, drying, calcining the dried mixture, finally generating the lithium-ion conductor compound on the surface of the matrix substance, namely the high-nickel positive active material of the surface-modified lithium ion battery. The high-nickel positive active material disclosed by the invention has the advantages that the content of alkali substances is obviously reduced, the processing performance of the material is improved, and the electrochemical stability is improved.

Resistance spot welding of a steel workpiece to an aluminum or an aluminum alloy workpiece can be facilitated by replacing the refractory aluminum oxide-based layer(s) on at least the faying surface of the aluminum or aluminum alloy workpiece with a protective coating that is more conducive to the spot welding process. The protective coating may be a metallic coating or a metal oxide conversion coating. In a preferred embodiment, the protective coating is a coating of zinc, tin, or an oxide of titanium, zirconium, chromium, or silicon.

The invention relates to steel for a steam-temperature ultra-supercritical thermal power unit and a preparation method thereof, belonging to the technical field of heat resistant steel. The steel comprises the following chemical compositions by weight percentage: 0.06-0.10 percent of carbon, 0.1-0.5 percent of silicon, 0.2-0.8 percent of manganese, not more than 0.004 percent of phosphorous, not more than 0.002 percent of sulfur, 8.0-9.5 percent of chromium, 2.5-3.5 percent of tungsten, 2.5-3.5 percent of cobalt, 0.03-0.07 percent of niobium, 0.10-0.30 percent of vanadium, 0.80-1.20 percent of copper, 0.006-0.010 percent of nitrogen, 0.010-0.016 percent of boron, 0.01-0.04 percent of rare-earth cerium, not more than 0.01 percent of nickel, not more than 0.005 percent of aluminum, not more than 0.01 percent of titanium, not more than 0.01 percent of zirconium and the balance of ferrum and inevitable impurity elements. The steel has the advantages that the steel can be used for preparing G115 steel of 650 DEG C of steam-parameter ultra-supercritical thermal power unit and a large-diameter boiler tube thereof, and the room-temperature mechanical property, the impact property, the high-temperature mechanical property and the permanence property of the steel are much higher than those of P92 steel in the Gb5310 and ASME standard.

The present invention relates to a chrome-free passivating liquid for treating aluminum alloy and a method for using the same; the components of the passivating liquid and the weight concentration of the elements thereof consist of fluorin titanate comprising Ti (IV) between 0.05 wt percent and 0.15 wt percent, fluorin zirconate comprising Zr (IV) 0.01 wt percent and 0.05 wt percent and organic phosphate compound comprising 0.02 wt percent to saturated concentration. The use method of the passivating liquid of the invention has the following procedures: after grease on the surface of the aluminum alloy is removed, the aluminum alloy is treated by alkali cleaning, deoxidation and activation; when the temperature is between 25 DEG C and 60 DEG C and the PH value is between 3 and 3.5, the aluminum alloy is treated by impregnating or spraying for 2 min to 5 min. In the passivating liquid of the invention, organic phosphoric acid is directly added to a titanium zirconium system; the formed zirconium phosphate composite structure can obviously improve the corrosion resisting property of a passivating film and the adhesive capactiy of polymer coating (primer) on the surface of aluminum alloy.

A Fischer-Tropsch catalyst support comprising at least 15 wt % of a material having the formula X_aY_bO_c wherein: X comprises an element selected from the group consisting of magnesium, calcium, barium, strontium, cerium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, niobium, ruthenium, rhodium, palladium, cadmium, osmium, iridium, platinum, gold, mercury, tin, lead, lanthanides, and mixtures thereof; Y comprises a different element to X, Y selected from the group consisting of silicon, aluminium, titanium, zirconium, cerium, hafnium, gallium, and mixtures of these, preferably silicon, aluminium and titanium and mixtures thereof, especially titanium; O is oxygen; a and b are, independently, in the range of 1-6; c is in the range of 1-15. Preferably a perovskite-type structure results which is more stable and resistant to degradation.

The invention relates to a preparation method of a titanium zirconium base alloy. The titanium zirconium base alloy comprises the following components in percentage by weight: 41-62% of Ti, 30-51% of Zr, 5% of Al and 3% of V. The preparation method comprises the following steps: adding the raw materials into a nonconsumable electric-arc furnace and melting the raw materials to obtain an alloy ingot; after coating a high-temperature antioxidant on the surface of the alloy ingot, heating and insulating in the furnace, and cogging and forging to obtain a platy alloy; after removing the antioxidant on the surface, heating in a thermal treatment furnace at 850-870 DEG C, insulating for 1 hour and performing water quenching and cooling; cutting the alloy plate to thin plates which are 3-4mm long for rolling and forming at room temperature, wherein the rolling strain rate is 2.2-3.1<-s> and the total deformation is over 80%; then, annealing, wherein the vacuum degree is 10<-4>-10<-5>Pa, the temperature is 740-760 DEG C; insulating for 1 hour; performing air cooling to room temperature. According to the preparation method provided by the invention, the titanium zirconium base alloy with the microstructure which is a special duplex microstructure is obtained, and the alloy strength is effectively improved while the plasticity of the alloy is maintained.

The invention discloses a high thermal conductivity cast aluminium alloy and a preparation method thereof. The high thermal conductivity cast aluminium alloy comprises the following components by weight percent: 5.0-7.5% of silicone, 0.25-0.5% of magnesium, 0.01-0.06% of boron, 0.005-0.02% of titanium, 0.005-0.02% of zirconium, less than 0.2% of iron, less than 0.2% of copper, less than 0.1% of manganese, less than 0.1% of zinc, no more than 0.3% of all the other impurities and the balance of aluminium. The preparation method comprises that boron oxide is taken as a modificator, and then titanium and zirconium elements are added, thus a cast aluminium alloy with thermal conductivity as high as 210W/(m.K) can be prepared. The high thermal conductivity cast aluminium alloy has the advantages that thermal conductivity of a Al7SiMg cast aluminium alloy is obviously improved on the basis of the existing good casting property, mechanical property and thermal treatment property, and an industrial application range of the Al7SiMg cast aluminium alloy is expanded.

The present invention provides a catalyst capable of producing an epoxy compound in high yield and improving the utilization efficiency of the oxidizing agent as well as a method of producing an epoxy compound using that catalyst. A catalyst for producing an epoxy compound by oxidizing a compound having at least one ethylenic double bond with an oxidizing agent, comprising a polyatom-containing heteropolyoxometalate anion (A1) having two defective and/or three defective structure sites and containing silicon as the heteroatom, and an element (E1) being at least one element selected from the group consisting of vanadium, tantalum, niobium, antimony, bismuth, chromium, molybdenum, selenium, tellurium, rhenium, cobalt, nickel, ruthenium, rhodium, palladium, osmium, platinum, iridium, silver, gold, zinc, aluminum, gallium, indium, scandium, yttrium, titanium, zirconium, hafnium, germanium, tin and lanthanoids, and being different from the polyatom.

The invention discloses a method for preparing a fine-grain high-density TZM (Titanium-Zirconium-Molybdenum Allo) alloy. The method disclosed by the invention comprises the following steps of: with pure molybdenum powder, ZrH2 powder, La2O3 powder and graphite powder as raw materials, mixing the raw materials, and carrying out ball milling, press molding, presintering and high-temperature sintering to obtain the TZM alloy. The TZM alloy prepared by using the method disclosed by the invention has the characteristics of fine crystal grains, distribution uniformity, low porosity, high compactness, simple preparation process and strong operability and controllability and has the most remarkable advantages that: on the basis of the traditional ZTM alloy preparation method, rare earth oxide La2O3 is solid-solid doped in the alloy powders, a mode of combining mixing and ball-milling of the alloy powders and a mode of sectional sintering during high-temperature sintering are adopted, crystal grains are fined, the alloy density is remarkably improved, the sintering temperature of the TZM alloy is reduced to 1800-2000 DEG C from 2100-2300 DEG C in the traditional method, therefore energy resources are saved and requirements of an enterprise on the fine-grain TZM alloy material with high density can be met.

The invention relates to the field of surface protection for aluminium alloys, and specifically discloses a method for titanium-zirconium conversion film/silane film double-layer protection for an aluminium alloy surface. The method comprises the following steps: firstly, carrying out polishing, alkali cleaning and acid cleaning on an aluminium alloy, then soaking the aluminium alloy in a zirconium/titanium conversion solution for 1-60min to generate a layer of titanium/zirconium conversion film, naturally airing, then soaking a sample sheet in a silane hydrolysate for 1-30min, taking out, and then curing at 25-200 DEG C to form a silane film. According to the method disclosed by the invention, a surface treatment technology of titanium-zirconium conversion film/silane film double-layer protection is adopted, and the defects of low corrosion resistance of a single conversion film and the silane film, low wear resistance of the single conversion film, and the like are solved; and moreover, the treatment solution in the method disclosed by the invention is free from toxic substances and meets the requirement of environmental protection, and the process is simple and easy to form industrialization.

The invention provides a method for preparing a low-oxygen titanium-zirconium-molybdenum (TZM) alloy, which comprises the following steps of: 1) selecting raw materials, namely, uniformly mixing industrial molybdenum powder with the Fisher particle size of 4 to 50 mu m, powder containing titanium and zirconium and with the Fisher particle size of 3 to 10 mu m, and simple substance carbon powder with the Fisher particle size of 0.1 to 3 mu m according to a certain mass ratio; 2) shaping the raw materials, namely, treating the mixed raw materials under the pressure of 100 to 300 Mpa to obtain a shaped blank; and 3) sintering the raw materials, namely, sintering the shaped blank in the environment of vacuum, hydrogen or inert gas at the temperature of 1,800 to 2,300 DEG C for 5 to 15h to obtain the low-oxygen TZM alloy. The method solves the problem of high oxygen content of the TZM alloy prepared by a powder metallurgy method. The low-oxygen TZM alloy prepared by the method can be used for the preparation of a rotating anode of an X-ray tube, a composite target substrate, a high-temperature crucible, a hot-forging die and a high-temperature ceramic pad.

Provided are curable film-forming compositions are provided including:

• • (a) a binder of an alkoxysilane;
  • (b) a metal oxide compound containing titanium, zirconium, cerium, niobium, tantalum, and/or tin; and
  • (c) a polyglycidyl ether. Also provided are optical articles including a substrate and the curable film-forming composition superposed on a surface thereof.

The invention relates to a preparing method and application of high purity and density spherical titanium zirconium alloy powder, and belongs to the technical field of alloy powder material preparation. The preparing method comprises the following steps that titanium sponge and zirconium sponge are used as raw materials, and titanium zirconium alloy ingots are prepared by using a vacuum induction melting technology; uniform vacuum annealing treatment is conducted on the titanium zirconium alloy ingots, and the ingots of uniform elements are obtained; the titanium zirconium alloy ingots are crushed into particles, hydrotreating is conducted, and hydrogen absorption titanium zirconium alloy powder is obtained; the hydrogen absorption titanium zirconium alloy powder is ball-milled under atmosphere protecting, and the hydrogen absorption titanium zirconium alloy powder of small particle sizes and irregular forms is obtained; the hydrogen absorption titanium zirconium alloy powder of irregular forms are sent to an inductive plasma torch, and the hydrogen absorption titanium zirconium alloy powder quickly absorbs heat, is dissolved and dehydrogenized; and in the dehydrogenizing process, the hydrogen absorption titanium zirconium alloy powder is split and shattered and then fused and nodulized under the high temperature, and finally, the high purity and density spherical titanium zirconium alloy powder is obtained by cooling. The titanium zirconium alloy powder prepared through the method has the advantages of being high in purity, small in particle size, good in uniformity, high in degree of sphericity and good in flowability.