593 results about "Alloy electrode" patented technology

A method of fabricating an electrode structure for a ferroelectric device structure including a ferroelectric material, involving chemical vapor deposition of a hybrid electrode constituting a multilayer electrode structure or an alloyed electrode structure, using either bubbler delivery or liquid delivery chemical vapor deposition.

An uncoated refractory antiwear welding cast iron alloy electrode for build-up welding contains C (2.5-6.5 wt.%), Si (0.8-2.5), Mn (0.4-1.5), Cr (16-35), Nb (0-1.5), Mo (0-3.5), Ni (0-2.0), W (0-2.5), V (0.1-2.0), Ti (0-0.8), Cu (0-1.0), S (0-0.08), P (0-0.1), O (0-0.08), N (0-0.08), Al (0-0.1) and Fe (rest), and is made up by casing method. Its advantages are high hardness of welded layer (more than 42 HRC), and low cost.

The invention relates to a copper, copper/molybdenum, or copper/molybdenum alloy electrode etching solution, comprising: based on the total weight of the etching solution, 12-35 wt% of hydrogen peroxide, 0.5-5 wt% of sulfate, 0.5-5 wt% of phosphate, 0.0001-0.5 wt% of fluorine ion, 0.1-5 wt% of first water-soluble cyclic amine, 0.1-5 wt% of chelating agent, 0.1-5 wt% of second water-soluble cyclicamine, 0.1-5 wt% of diol, and deionized water, the total weight of the etching solution being 100 wt%. The invention relates to the copper, copper/molybdenum, or copper/molybdenum alloy electrode layer etching solution for use in the process of etching gate electrode, source electrode, or collecting electrode of the thin film transistor (TFT) in the liquid crystal display device or etching metallic wire.

The invention relates to a method for melting a nickel-base high temperature alloy with an electro-slag furnace. The method includes the following methods: loading materials, welding a high temperature alloy electrode and a false electrode to be smelted together, and placing slag materials at the bottom of a crystallizer; blowing the welded electrodes with inert gases, and closing a protection cover; protecting a smelting closing smoke exhaust valve, and feeding an Ar gas into the crystallizer and the protection cover; striking an arc and melting slag; cleaning smelting slag materials, starting a smelting period, and swinging a slag resistor for less than 0.5 m omega during the smelting process; adding oxidizing agents, and adding metal aluminum powder continuously or at intervals to serve as deoxidizing agents during an electro-slag re-melting process; adopting feeding thorough three stages, power feeding is decreased rapidly, power feeding is decreased slowly, and finally heat is preserved at constant power; and casting a die, cooling and demolding the die. According to the method for melting the nickel-base high temperature alloy with the electro-slag furnace, the surface of a nickel-base high temperature steel ingot has no slag groove defect, and the burning losses of Al and Ti are less than or equal to 5%.

The invention belongs to the technical field of catalytic and energy storage applications of high-entropy alloys, and particularly relates to a nanometer porous high-entropy alloy catalytic electrode,a preparing method thereof and applications of the electrode in bi-functional catalytic water splitting to produce hydrogen and oxygen. The electrode includes, by mole, 15-50% of Ni, 5-20% of a transition metal A, 15-50% of Mo, 5-25% of a transition metal B and 5-40% of Mn, wherein the transition metal A is Fe or Cu, and the transition metal B is one of Co, Ti or W. The alloy electrode has a porous structure, pore diameters range from 2 nm to 500 nm, and the specific surface area is 10-80 m<2>/g. The alloy electrode has advantages of 1) capability of being three-dimensional, porous, self-supporting and no need of any support or adhesive; 2) a large specific surface area and good electrical conductivity; 3) a simple material structure of the non-noble-metal porous high-entropy electrode, rich raw material sources, low prices and controllable preparation conditions; and 4) excellent catalytic performance.

This invention relates to a Pa-type CoSb3-base thermoelectric converting device including: a Mo-Cu alloy electrode at an end of high temperature, a welding layer of the high temperature end, a diffusion blocking layer, thermoelectric pins, a metal layer, a welding layer and an electrode of the low temperature end, in which, the thermoelectric pins are made of P or N-type CoSb3-base thermoelectric material and are connected with the Mo-Cu alloy electrode into one unit by the welding layer of the high temperature end to form a high temperature end, the low temperature end of the pins are connected with the electrode of its end by the metal layer and the welding layer of the low temperature end, which utilizes a SPS quick welding technology to realize heat match as much as possible and no obvious crack exists at the high temperature end.

The invention provides a method for preparing Ti-6Al-7Nb medical titanium alloy spherical powder. The preparation method comprises the following steps: preparing materials of alloy components according to ASTM F1295 standards and carrying out two times of vacuum melting on a mother alloy ingot; preparing the mother alloy ingot into an alloy electrode bar through forging and machining; carrying out pre-vacuumizing treatment on atomization equipment and introducing mixed inert protective gas; conveying the electrode bar into an atomization chamber through a feeding system and heating the end face of the electrode bar by using a plasma torch; preparing metal liquid drops by using a centrifugal effect of a rotary electrode and instantly condensing the metal liquid drops into spherical metal powder; after cooling the high-nitrogen stainless steel spherical powder, removing non-metal impurities through an electrostatic impurity removing device; and finally, carrying out powder package by adopting multilayered vacuum heat sealing. The method provided by the invention has the characteristics of high production efficiency, strong batch stability, high fine powder yield and the like; and the Ti-6Al-7Nb medical titanium alloy spherical powder with high sphericity degree, good purity, strong mobility and smooth and clean surface can be easily prepared.

The invention discloses an inclined cavity surface two-dimensional photonic crystal distribution feedback quantum cascade laser and a preparation method. The inclined cavity surface two-dimensional photonic crystal distribution feedback quantum cascade laser comprises an InP substrate, an InP waveguide limit layer manufactured on the InP substrate, an InGaAs lower waveguide layer manufactured on the InP waveguide limit layer, a strain compensation active layer manufactured on the InGaAs lower waveguide layer, an InGaAs upper waveguide layer manufactured on the strain compensation active layer, a two-dimensional rectangular photonic crystal dot matrix graph manufactured on the InGaAs upper waveguide layer, an InP cover layer manufactured on the InGaAs upper waveguide layer, a contact layer manufactured on the cover layer for forming a secondary epitaxial wafer, V-shaped double channels etched downward from the surface of the secondary epitaxial wafer to the limit layer for forming a slant ridge waveguide, a silicon dioxide layer which is manufactured on the surfaces of the V-shaped double channels and the contact layer, a front electrode manufactured on the surface of the etched secondary epitaxial wafer, a metal layer which is manufactured on the front electrode and fills up the two V-shaped double channels and an alloy electrode manufactured on the backside of the InP substrate, wherein a current injection window is formed in the middle of the silicon dioxide layer on the surface of the contact layer.

A preparation method of Waspalloy spherical powder for additive manufacturing includes the steps of conducting alloy component compounding according to AMS 5706 standards and subjecting master ingots to vacuum melting twice; producing the master ingots into alloy electrode bars by means of forging and machining; subjecting an atomizing unit to pre-vacuum-pumping treatment, and feeding the atomizing unit with mixed inert protective gas; feeding the electrode bars into an atomizing chamber by a feeding system, heating electrode bar end faces by a plasma torch, preparing metal liquid droplets under the centrifugal action of a rotating electrode, and making the metal liquid droplets form spherical metal powder by flash setting; using a powder collecting device comprising an electrostatic separation component for removing inclusions of the spherical metal powder and collecting purified powder. The preparation method has the advantages of high production efficiency, high batch stability and high -270-mesh powder yield and can be used for easily preparing the Waspalloy spherical powder high in purity, sphericity and fluidity.

This invention relates to a one-step connection technology for the thermoelectric element of CoSb base and an alloy electrode (flow connector) matched to it characterizing that said alloy electrode is made of Mo-Cu serial alloy advantaged that related CTE can be designed freely, the electrode is made of Mo-Cu alloy in the thickness of 0.5-3mm, and the preparation character is a one-step connection method by utilizing discharge plasma sinter to connect a MoCu alloy electrode material and a CoSb thermoelectric material at a Ti transition layer with the grain size of 30-75mum to connect the interfaces very well without evident resistance transition.

The present invention relates to a hydrogen storage alloy electrode composed of a hydrogen storage alloy having a CaCu5 region and a Ce2Ni7 region in the crystal structure and satisfies the relational formula: p:q=1:(4+a), where p is the sum of the mole fraction of an element occupying the Ca site of the CaCu5 region and the mole fraction of an element occupying the Ce site of the Ce2Ni7 region, q is the sum of the mole fraction of an element occupying the Cu site of the CaCu5 region and the mole fraction of an element occupying the Ni site of the Ce2Ni7 region, and -0.2<=a<=0.4. Accordingly, although the hydrogen storage alloy electrode contains a little or no Co, it is possible to obtain an electrode having little deterioration due to pulverization of the alloy and a high capacity.

The invention relates to a preparation method of a molybdenum alloy electrode material doped with nano rare oxides. According to the preparation method, molybdenum powder is used as a raw material, the molybdenum powder and nano rare oxide powder are uniformly mixed by adopting a solid-solid doping method, wherein the nano rare oxides are lanthana oxide, cerium oxide or mixed rare earth oxide; and then the molybdenum alloy electrode material doped with different kinds and contents of nano rare earth oxides is prepared through adopting the processes of sieving, pressing and forming, sintering,forging and vacuum annealing heat treatment under certain temperature. The preparation method disclosed by the invention and the heat treatment process are simple and feasible; and the molybdenum alloy electrode material doped with the nano rare earth oxides, which is prepared by using the method disclosed by the invention, has the characteristics of uniform tissues, high compactness, high strength, high recrystallization temperature, high elongation rate, favorable deep processing performance, and the like.

The invention relates to a method for magnetic control electroslag remelting and high-efficiency refining high temperature alloy and a device therefor. The method utilizes electromagnetic shock excitation effect for thinning molten drop and solidification structure, so as to improve the refining effect and reduce segregation. The device comprises a copper mould crystallizer, a water jacket, a high temperature alloy electrode bar, a water-cooled copper plate bottom electrode and a power supply. The invention is characterized in that a magnetic field generator is arranged at the periphery of the water-cooling copper mould crystallizer to generate magnetic field which is compounded with current of electroslag melting, thus generating oscillating lorentz force. The invention is used for electroslag remelting and refining the high temperature alloy, can improve the refining effect and reduce segregation of cast ingot.

Provided is a hydrogen storage alloy which is characterized in that two or more crystal phases having different crystal structures are layered in a c-axis direction of the crystal structures. The hydrogen storage alloy is further characterized in that a difference between a maximum value and a minimum value of a lattice constant a in the crystal structures of the laminated two or more crystal phases is 0.03 Å or less.

Disclosed are methods for forming active metal battery alloy electrodes having protective layers ("encapsulated electrodes"). Charged and uncharged encapsulated alloy electrodes and methods for their fabrication are provided.

The invention discloses an electrochemical method for processing garbage percolate concentrated solution. The electrochemical method includes adjusting pH value of the garbage percolate concentrated solution to 2-4, conducting primary electrochemical processing on the garbage percolate concentrated solution by utilizing a high voltage pulse power supply and an alloy electrode, then adding an oxidation accelerator and a catalyst for further conducting fenton reaction, utilizing the high voltage pulse power supply and an advanced oxidation electro catalysis electrode to conduct secondary electrochemical processing, namely the anode electro catalysis oxidation reaction and the cathode electro catalysis reduction reaction, on supernate till the ratio of BOD5/CODcr of the supernate is larger than or equal to 0.35 to obtain modified garbage percolate concentrated solution capable of conducting aerobic biochemical degradation. The electrochemical method conducts non-selective oxidation degradation and reduction modification on different organic molecules with different structures in the concentrated solution, effectively eliminates biotoxicity of the concentrated solution, reduces salt content, reduces pollutant density and accordingly lays foundation for standardized discharge of processed garbage percolate concentrated solution.

A method of producing a semiconductor device having a thickness of 90 μm to 200 μm and with an electrode on the rear surface, which achieves a high proportion of non-defective devices by optimizing the silicon concentration and thickness of the aluminum-silicon electrode. A surface device structure is formed on a first major surface of a silicon substrate. A buffer layer and a collector layer are formed on the second major surface after grinding to reduce the thickness of the substrate. On the collector layer, a collector electrode is formed including a first layer of an aluminum-silicon film having a thickness of 0.3 μm to 1.0 μm and a silicon concentration of 0.5 percent to 2 percent by weight, preferably not more than 1 percent by weight.

The invention relates to rare earth system hydrogen storage alloy with the general formula of RExYyNiz-a-b-cMnaAlbMcZrATiB. The peak capacity of an alloy electrode is higher than that of LaNi5 type hydrogen storage alloy, and the manufacturing method is simple and safe. The hydrogen storage alloy has the good activation property, the rate discharge capability, and charging and discharging or hydrogen absorption and desorption circular stability, can be used in the wider temperature range, and is small in self discharging. The method can be used for manufacturing a cathode of an alkaline rechargeable battery and a rechargeable battery with the hydrogen storage alloy.

A process for deep cold treatment of the spot-welding electrode for the galvanized steel plate in order to elongate its service life includes putting the Cu-alloy electrodes in a container full of deep cold medium in a deep cold treater layer by layer, setting parameters, deep cold treating, and naturally raising their temp to ordinary temp. Its advantages are long service life elongated by 4 times, no splash on welding, and high welding quality.

A hydrogen-bearing rare-earth alloy as electrode has the chemical formula A1-yByCxm, where A is chosen from La, La-enriched mixed rare earth, Ce, etc, B is chosen from Mg, Ca, Be, etc, and C is chosen from Mn, Fe, Mo, etc. Its quenching process includes heating it to a certain temp in high-vacuum condition, keeping the temp for several hr, and quenching in oil or water. Its advantages include uniform internal structure, high capacity and long cycle life.