摘要:
A method for forming an anticorrosive coating on the surface of a metal substrate, which comprises, in one embodiment, (1) coating the surface of the metal substrate with an anticorrosive metal capable of forming an alloy with the substrate metal and/or a hydride of the anticorrosive metal; (2) heating the coated surface, and then; (3) heating the coated surface in a vacuum or in an atmosphere substantially inert to the metal coating and the metal substrate by irradiating the coated surface with electron beams, laser beams or a plasma arc to sinter the coated metal and form an alloy layer in the interface between the metal substrate and the metal coating and, in another embodiment, subsequent to Step (2) and prior Step (3) above, coating the coated surface with a solution of a thermally decomposable platinum-group metal compound and then heating the resulting coated surface at about 40.degree. C. to about 600.degree. C.
摘要:
A cathode for electrolyzing acid solutions which comprises an electrically conductive metal substrate, a spray coated layer of a cathode active material containing tungsten, tungsten carbide or a mixture thereof in an amount of 10% by weight or more on the substrate, and an impregnation coated layer of 1 g/m.sup.2 or more of an acid-resistant fluorine containing resin on the outside surface of the coated layer of cathode active material, and a process for producing such.
摘要翻译:一种用于电解酸性溶液的阴极,其包含导电金属基底,在基底上含有10重量%以上的含有钨,碳化钨或其混合物的阴极活性材料的喷涂层,以及浸渍涂层 在阴极活性物质的被覆层的外表面上为1g / m 2以上的耐酸性含氟树脂层,以及其制造方法。
摘要:
A method for forming an anticorrosive coating on the surface of a metal substrate, which comprises, in one embodiment, (1) coating the surface of the metal substrate with an anticorrosive metal capable of forming an alloy with the substrate metal using a spraying procedure, and (2) then heating the coated surface in a vacuum or in an atmosphere substantially inert to the metal coating and metal substrate by irradiating electron beams or a plasma arc thereonto to form an alloy layer in the interface between the metal substrate and the metal coating and, in a second embodiment, subsequent to step (1) and prior to step (2) above coating a solution of a thermally decomposable platinum-group metal compound on the surface of the resulting coating, and heat-treating the coated product at about 50.degree. to about 300.degree. C.
摘要:
An electrolysis apparatus comprising a diaphragm of a solid polymer electrolyte, and an anode electrode structure and a cathode electrode structure located on both sides of the diaphragm, at least one of the electrode structures intimately contacting the surface of said diaphragm, the intimately contacting electrode structure comprising a gas-permeable electrically conductive substrate and a film-like porous electrode catalyst layer bonded integrally thereto and a method for producing such.
摘要:
A cathode for use in the electrolysis of acid solutions, comprisingan electrically conductive substrate,a sprayed coating layer containing at least 10% by weight of W, WC or a mixture thereof on the substrate andan impregnated coating layer comprising a mixture of a cathode active substance and an acid-resistant fluorine-based resin on the external surface of the sprayed coating layer, and a process for the production of such a cathode. The cathode has very superior hydrogen overvoltage characteristics and durability, and is very suitable for use in the electrolysis of acid solutions.
摘要:
An electrolysis apparatus comprising a diaphragm of a solid polymer electrolyte, and an anode electrode structure and a cathode electrode structure located on both sides of the diaphragm, at least one of the electrode structures intimately contacting the surface of said diaphragm, the intimately contacting electrode structure comprising a gas-permeable electrically conductive substrate and a film-like porous electrode catalyst layer bonded integrally thereto and a method for producing such.
摘要:
A cathode for electrolyzing acid solutions which comprises an electrically conductive metal substrate, a spray coated layer of a cathode active material containing tungsten, tungsten carbide or a mixture thereof in an amount of 10% by weight or more on the substrate, and an impregnation coated layer of 1 g/m.sup.2 or more of an acid-resistant fluorine containing resin on the outside surface of the coated layer of cathode active material, and a process for producing such.
摘要:
An alloy for use as a substrate of an electrode for use in electrolysis, the alloy comprising(1) titanium and(2) 0.05 to 10% by weight of (a) tantalum and (b) niobium, zirconium or mixtures thereof, where the tantalum is present in an amount of 0.01 to 9.99% by weight, with each % by weight being based on the weight of the alloy. The alloy can additionally contain(3) 0.001 to 1.5% by weight of at least one platinum-group metal selected from the group consisting of platinum, iridium, rhodium, ruthenium, palladium and osmium, with the % by weight being based on the weight of the alloy. The alloy of this invention is an excellent material to prepare a corrosion-resistant electrode substrate.
摘要:
The present invention provides a combustion-based method and apparatus for producing and isolating carbon nanotubes. The nanotubes are formed when hot combustion gases are contacted with a catalytic surface, which is readily separated from the catalyst support and subsequently dissolved. The process is suitable for large-scale manufacture of carbon nanotubes.
摘要:
The subject invention provides a stable mass production method of carbon nano structure at low cost immune to variation of particle diameter of the catalyst microparticle in the catalyst material. The subject invention also provides a production device used for the method, and a new carbon nano structure having a conformation suitable for the mass production. The production method of carbon nano structure comprising fluidizing a material gas and catalyst microparticles in the reactor so that the material gas and the catalyst microparticles are brought into contact with each other, wherein said catalyst microparticles are suspended by the instantaneous spraying of the high-pressure gas, and then the suspension effect of the catalyst microparticles is stopped so that the catalyst microparticles naturally fall. The particle diameter of the catalyst microparticles is thus selected. With this arrangement, only the selected catalyst microparticles with the desired diameter are supplied to the reactor. Since this arrangement is immune to influence of variation in particle diameter of catalyst microparticles contained in the catalyst material, it achieves stable mass production of carbon nano structure at low cost.