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1.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：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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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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5.发明授权Process for producing finely divided spherical metal powders containing an iron group metal and a readily oxidizable metal 失效用于生产包含铁族金属和容易氧化的金属的精细分散的球形金属粉末的方法
公开(公告)号：US4802915A
公开(公告)日：1989-02-07
申请号：US185713
申请日：1988-04-25
CPC分类号： C22C33/0207 , B22F1/0048
摘要： Alloys of a first group of metals containing at least one iron group metal and one or more easily oxidizable metals can be formed by forming an aqueous solution of the first group of metals, forming solids containing the metals from the solution, reducing the solids to a metallic powder, converting the metallic powder to metallic alloy spherical powders, agglomeration the spherical powder with one or more easily oxidizable metals in a non-oxidizing atmosphere, thereafter the agglomerates are subjected to a sufficient temperatures under non-oxidizing conditions to form an alloy. Alternatively, the easily oxidizable metals can be agglomerated with the solids containing the iron group metal prior to converting the agglomerates to a spherical alloy powder.
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6.发明授权Hydrometallurgical process for producing finely divided spherical low melting temperature metal based powders 失效用于生产精细分散的球形低熔点金属基粉末的湿法冶金方法
公开(公告)号：US4723993A
公开(公告)日：1988-02-09
申请号：US28824
申请日：1987-03-23
CPC分类号： B22F1/0048 , C22C1/04 , Y10S75/953
摘要： A process for producing finely divided spherical metal low melting temperatures powders comprises forming an aqueous solution metals, forming a reducible solid material from the solution, reducing the solid to metal powder particles, subjecting the metal particles to a high temperature zone to melt a portion of the metal powder particles and to form droplets and cooling the droplets to form essentially spherical metal particles.
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7.发明授权Hydrometallurgical process for producing finely divided spherical maraging steel powders 失效用于生产细碎球形马氏体时效钢粉末的湿法冶金工艺
公开(公告)号：US5114471A
公开(公告)日：1992-05-19
申请号：US291832
申请日：1988-12-29
CPC分类号： B22F1/0048 , C22C33/0285
摘要： A process comprising by producing maraging steel powder comprises forming an aqueous solution of iron, cobalt, nickel and molybdenum metals values in a predetermined ratio, forming a reducible solid material from the solution reducing the solid material to metallic powder particles, entraining at least a portion of the powder particle in a carrier gas which is fed into a high temperature zone to form droplets therefrom, and cooling said droplets to form essentially spherical shaped maraging steel alloy particles.
摘要翻译： 包括通过产生马氏体时效钢粉末的方法包括以预定比例形成铁，钴，镍和钼金属的水溶液值，从溶液中形成可还原固体材料，将固体材料还原成金属粉末颗粒，夹带至少一部分 的粉末颗粒在进料到高温区中以形成液滴的载气中，并且冷却所述液滴以形成基本上为球形的马氏体时效钢合金颗粒。
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8.发明授权Hydrometallurgical process for producing spherical maraging steel powders utilizing spherical powder and elemental oxidizable species 失效使用球形粉末和元素可氧化物质生产球形马氏体时效钢粉末的湿法冶金工艺
公开(公告)号：US4787934A
公开(公告)日：1988-11-29
申请号：US140515
申请日：1988-01-04
CPC分类号： B22F1/0096 , B22F1/0048
摘要： A process for forming maraging steel alloys comprise forming an aqueous solution containing the metal values of iron, cobalt, nickel and molybdenum in a predetermined ratio, forming the reducible solid material from the solution, reducing the solid material to form metallic powder particles. These particles are entrained in a carrier gas and fed into a high temperature zone to form droplets. The droplets are cooled to form essentially spherical particles which are agglomerated with a predetermined amount of at least one readily oxidizable metal selected from the group consisting of aluminum, titanium and vanadium. The agglomerates are entrained in a carrier gas and fed into a high temperature zone to form droplets which are thereafter cooled to form essentially spherical shaped particles of a maraging steel alloy containing at least one readily oxidizable metal.
摘要翻译： 形成马氏体时效钢合金的方法包括以预定比例形成含有铁，钴，镍和钼的金属含量的水溶液，从溶液中形成可还原固体材料，还原固体材料以形成金属粉末颗粒。 这些颗粒被夹带在载气中并进料到高温区以形成液滴。 将液滴冷却以形成基本上为球形的颗粒，其与预定量的至少一种选自铝，钛和钒的易氧化金属团聚。 附聚物被夹带在载气中并进料到高温区以形成液滴，然后冷却以形成含有至少一种容易氧化的金属的马氏体时效钢合金的基本上球形的颗粒。
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9.发明授权Hydrometallurgical process for producing finely divided spherical maraging steel powders containing readily oxidizable alloying elements 失效用于生产含有容易氧化的合金元素的细碎球形马氏体马氏体时效钢粉末的湿法冶金工艺
公开(公告)号：US4772315A
公开(公告)日：1988-09-20
申请号：US140514
申请日：1988-01-04
CPC分类号： C22C33/0207 , B22F1/0048 , C22C33/0285 , B22F2999/00
摘要： A process for producing spherically shaped maraging steel powder particles containing a readily oxidizable metal comprises forming an aqueous solution containing the metal values of iron, cobalt, nickel and molybdenum, in a predetermined ratio, forming a reducible solid material from the solution reducing the solid material to form metallic poweder particles. These particles are agglomerated with a predetermined amount of a second group consisting of at least one readily oxidizable metal selected from the group consisting of aluminum, titanium and vanadium. The agglomerates are entrained in a carrier gas and fed into a high temperature zone and droplets are formed. The droplets are cooled to form essentially spherical shaped particles of a maraging steel alloy containing at least one readily oxidizable metal.
摘要翻译： 一种用于生产含有易氧化金属的球形马氏体时效钢粉末颗粒的方法包括以预定比例形成含有铁，钴，镍和钼的金属含量的水溶液，从该溶液中形成还原固体材料 以形成金属粉末颗粒。 这些颗粒与预定量的由至少一种选自铝，钛和钒的容易氧化的金属组成的第二组聚集。 附聚物被夹带在载气中并进料到高温区中并形成液滴。 液滴被冷却以形成包含至少一种容易氧化的金属的马氏体时效钢合金的基本上球形的颗粒。
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10.发明授权Hydrometallurigcal process for producing finely divided spherical precious metal based powders 失效用于生产精细分散的球形贵重金属粉末的水蒸气法
公开(公告)号：US4731110A
公开(公告)日：1988-03-15
申请号：US26222
申请日：1987-03-16
CPC分类号： B22F9/22 , B22F1/0048
摘要： A process for producing finely divided spherical precious metal based powders comprises forming an aqueous solution containing a source of at least one precious metal value forming a solid reducible precious metal material from the solution, reducing the solid material to precious metal powder particles, subjecting the precious metal based particles to a high temperature zone to melt at least a portion of the precious metal based powder particles and cooling the molten material to form essentially spherical precious metal based alloy particles.
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