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公开(公告)号：US5470549A
公开(公告)日：1995-11-28
申请号：US361415
申请日：1994-12-22
IPC分类号： B22F1/02 , B22F9/22 , C01G41/00 , C04B41/51 , C04B41/88 , C22C1/04 , H01H1/025 , H01L23/498 , C01G3/00
CPC分类号： C01G41/00 , B22F1/025 , B22F9/22 , C04B41/5133 , C04B41/88 , C22C1/045 , H01H1/025 , H01L23/49883 , B22F2998/00 , H01L2924/0002
摘要： A method for making a tungsten-copper composite oxide wherein an amount of an ammonium tungstate and an amount of an oxide or hydroxide of copper are combined without milling to form a mixture. The unmilled mixture is then dehydrated and fired at a temperature and for a time sufficient to form the tungsten-copper composite oxide.
摘要翻译： 一种制备钨 - 铜复合氧化物的方法，其中将钨酸铵和一定量的铜的氧化物或氢氧化物的组合不经研磨以形成混合物。 然后将未磨碎的混合物在足以形成钨 - 铜复合氧化物的温度和时间下脱水和烧制。
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公开(公告)号：US5468457A
公开(公告)日：1995-11-21
申请号：US362024
申请日：1994-12-22
IPC分类号： B22F1/02 , B22F9/22 , C01G41/00 , C04B41/51 , C04B41/88 , C22C1/04 , H01H1/025 , H01L23/498 , C01G3/00
CPC分类号： H01L23/49883 , B22F1/025 , B22F9/22 , C01G41/00 , C04B41/5133 , C04B41/88 , C22C1/045 , H01H1/025 , B22F2998/00 , H01L2924/0002
摘要： A method of making a tungsten-copper composite oxide wherein an amount of an oxide of tungsten and an amount of an oxide of copper are combined to form a mixture, the oxide of tungsten or the oxide of copper, or both, being in a hydrated form. The mixture is then milled, dehydrated and fired at a temperature and for a time sufficient to form the tungsten-copper composite oxide, the time sufficient to form the tungsten-copper composite oxide being at least about one-half the time sufficient to form the tungsten-copper composite oxide from a mixture of tungsten trioxide, WO.sub.3, and cupric oxide, CuO, under substantially similar conditions.
摘要翻译： 一种制造钨 - 铜复合氧化物的方法，其中钨的氧化物和铜的氧化物的量被组合以形成混合物，钨的氧化物或铜的氧化物或两者的水合物 形成。 然后将混合物在足以形成钨 - 铜复合氧化物的温度和时间下研磨，脱水和焙烧，足以形成钨 - 铜复合氧化物的时间至少足以形成钨 - 铜复合氧化物的一半 来自三氧化钨WO 3和氧化铜CuO的混合物的钨 - 铜复合氧化物在基本相似的条件下。
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公开(公告)号：US4900590A
公开(公告)日：1990-02-13
申请号：US292713
申请日：1989-01-03
CPC分类号： C23C24/00 , B22F1/02 , C23C18/1216 , C23C18/1241 , C23C18/1275
摘要： A method is disclosed for producing aluminum oxide coated iron powder which comprises contacting iron powder of fine particle size with a liquid aluminum compound wherein the aluminum is hydrolyzable and adding water to the compound and the iron powder to form a slurry, removing essentially all of the liquid from the slurry to produce iron powder with a coating of hydrolyzed aluminum oxide, and firing the iron powder with the hydrolyzed aluminum oxide coating in a non-oxidizing atmosphere to produce iron powder with a coating of aluminum oxide.
摘要翻译： 公开了一种用于生产氧化铝涂覆的铁粉的方法，该方法包括使细颗粒的铁粉与液体铝化合物接触，其中铝是可水解的，并向化合物和铁粉中加入水以形成浆料，基本上除去所有 液体从浆料中生产出具有水解氧化铝涂层的铁粉，并在非氧化性气氛中用水解的氧化铝涂层焙烧铁粉以产生具有氧化铝涂层的铁粉。
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4.发明授权
公开(公告)号：US4793969A
公开(公告)日：1988-12-27
申请号：US143869
申请日：1988-01-14
摘要： A process is disclosed for producing a sheet of tungsten heavy alloy which comprises forming metal particles of the alloy wherein each metal particle is a uniform admixture of the alloy components, entraining the particles in a carrier gas, passing the particles and the carrier gas into a high temperature zone at a temperature above the melting point of the matrix phase of the particles and maintaining the particles in the zone for a sufficient time to melt at least the matrix phase of the particles and form spherical particles, followed by rapidly and directly solidifying the high temperature treated material while the material is in flight. A slurry is formed of this high temperature treated material and a liquid medium, the liquid medium is removed from the material and a planar cake is formed of the material, the cake is dried, and sintered to a density equal to or greater than about 90% of the theoretical density of the alloy to form the sheet.
摘要翻译： 公开了一种用于生产钨重合金片的方法，其包括形成合金的金属颗粒，其中每个金属颗粒是合金组分的均匀混合物，将颗粒夹带在载气中，使颗粒和载气流入 在高于颗粒的基质相的熔点的温度下将高温区域保持在该区域中的颗粒至少熔化至少颗粒的基质相并形成球形颗粒，然后快速且直接固化 高温处理材料，同时材料在飞行中。 由该高温处理材料和液体介质形成浆料，从材料中除去液体介质，并由该材料形成平面的饼状物，将滤饼干燥并烧结至等于或大于约90的密度 合金的理论密度的百分比形成片材。
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公开(公告)号：US4670047A
公开(公告)日：1987-06-02
申请号：US906370
申请日：1986-09-12
申请人： Nelson E. Kopatz , Lori S. Pruyne , Howard H. Shaw
发明人： Nelson E. Kopatz , Lori S. Pruyne , Howard H. Shaw
CPC分类号： B22F1/0048 , B22F2998/10
摘要： A process is disclosed for producing finely divided spherical metal powders. The process comprises forming a coating of a surface active agent which can be of the nonionic or anionic type on the surfaces of the particles of a metal powder, feeding the coated particles and a carrier gas into a high temperature zone and maintaining the particles in the zone for a sufficient time to melt at least about 50% by weight of the particles and to form droplets therefrom, and cooling the droplets to form metal particles having essentially a spherical shape with the majority of the particles having a size less than about 50 micrometers.
摘要翻译： 公开了一种用于生产精细分散的球形金属粉末的方法。 该方法包括在金属粉末颗粒的表面上形成可以是非离子或阴离子型表面活性剂的涂层，将涂覆的颗粒和载气进料到高温区并将颗粒保持在 区域足以熔化至少约50重量％的颗粒并从其形成液滴，并冷却液滴以形成具有基本上为球形的金属颗粒，其中大部分颗粒的尺寸小于约50微米 。
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公开(公告)号：US4755353A
公开(公告)日：1988-07-05
申请号：US33706
申请日：1987-04-03
CPC分类号： C23C4/185 , B22F1/0007 , B22F1/0096 , B22F2998/00 , Y10T428/12431
摘要： A process is disclosed for producing discontinuous metal foils. The process involves entraining metal powder particles in a carrier gas and passing the powder particles through a high temperature zone at a temperature above the melting point of the powder particles to melt at least about 50% by weight of the powder particles and thereafter resolidifying the resulting high temperature treated material by impacting the material against a substrate to form the foils.
摘要翻译： 公开了用于生产不连续金属箔的方法。 该方法包括将载体气体中的金属粉末颗粒夹带并使粉末颗粒在高于粉末颗粒的熔点的温度下通过高温区域，以熔化至少约50重量％的粉末颗粒，然后将所得 通过将材料冲击衬底以形成箔来进行高温处理的材料。
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7.发明授权Hydrometallurical process for producing finely divided spherical refractory metal based powders 失效用于生产精细分散的球状难熔金属基粉末的湿法冶金方法
公开(公告)号：US4731111A
公开(公告)日：1988-03-15
申请号：US26312
申请日：1987-03-16
CPC分类号： B22F1/0048
摘要： A process for producing finely divided spherical refractory metal based powders comprises forming an aqueous solution containing at least one refractory metal, forming a solid reducible refractory metal based material containing a compound selected from the group consisting of refractory metal salts, refractory metal oxides, hydroxides and mixtures thereof, reducing the solid material to refractory metal based powder particles, subjecting the refractory based metal particles to a high temperature zone to melt a portion of the particles and cooling the molten material to form essentially spherical refractory metal based powder particles.
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公开(公告)号：US4913731A
公开(公告)日：1990-04-03
申请号：US252411
申请日：1988-10-03
CPC分类号： C22C1/045 , B22F1/0096 , B22F2999/00
摘要： A process for forming particulate tungsten alloys from the individual metal sources comprises forming an aqueous solution containing the individual metals for producing tungsten heavy alloys, producing a solid particulate material from the solution and injecting the particle material into a high temperature zone and retaining such material in the high temperature zone for a time sufficient to at least partially melt the metals that are alloying with tungsten while maintaining the temperature of those metals below the boiling point of the lowest boiling metal in the second component. The prealloyed composite powder contains tungsten grains below about 5 micrometers as a discontinuous phase and has a continuous phase of the tungsten and a second component selected from nickel, iron, copper and mixtures thereof.
摘要翻译： 从各个金属源形成颗粒状钨合金的方法包括形成含有用于生产钨重合金的各种金属的水溶液，从溶液中生产固体颗粒材料，并将颗粒材料注入高温区并将这些材料保持在 高温区域足以至少部分地熔化与钨合金化的金属，同时将这些金属的温度保持在第二组分中最低沸点金属的沸点以下的时间。 预合金化复合粉末包含低于约5微米的钨晶粒作为不连续相，并且具有钨的连续相和选自镍，铁，铜及其混合物的第二组分。
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公开(公告)号：US4900587A
公开(公告)日：1990-02-13
申请号：US292714
申请日：1989-01-03
CPC分类号： C23C24/00 , B22F1/02 , C23C18/1216 , C23C18/1241 , C23C18/1275
摘要： A method is disclosed for producing aluminum oxide coated iron-aluminum alloy powder which comprises contacting iron-aluminum alloy powder of fine particle size with a liquid aluminum compound wherein the aluminum is hydrolyzable and adding water to the compound and the iron-aluminum alloy powder to form a slurry, removing essentially all of the liquid from the slurry to produce iron-aluminum alloy powder with a coating of hydrolyzed aluminum oxide, and firing the iron-aluminum alloy powder with the hydrolyzed aluminum oxide coating in a non-oxidizing atmosphere to produce iron-aluminum alloy powder with a coating of aluminum oxide.
摘要翻译： 公开了一种用于生产氧化铝涂覆的铁 - 铝合金粉末的方法，其包括使细粒径的铁 - 铝合金粉末与液体铝化合物接触，其中铝可水解并将化合物和铁 - 铝合金粉末加入到 形成浆料，从浆料中基本上除去所有的液体，以生产具有水解氧化铝涂层的铁铝合金粉末，并在非氧化性气氛中用水解的氧化铝涂层焙烧铁铝合金粉末以产生 铁铝合金粉末，涂有氧化铝。
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公开(公告)号：US4885028A
公开(公告)日：1989-12-05
申请号：US253173
申请日：1988-10-03
CPC分类号： B22F1/0096 , C22C1/045 , Y10S75/956
摘要： A process for forming particulate tungsten heavy alloys from agglomerated material containing the individual metals by using a high temperature zone is improved by retaining the material in the high temperature zone for a time sufficient to at least partially melt the metals that are alloying with tungsten while maintaining the temperature of those metals below the boiling point of the lowest boiling metal in the alloying component.
摘要翻译： 通过将材料保持在高温区域中，将材料保持在高温区域中足以至少部分地熔化与钨合金化的金属同时保持 这些金属的温度低于合金组分中最低沸点金属的沸点。
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