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公开(公告)号：US4880170A
公开(公告)日：1989-11-14
申请号：US292791
申请日：1989-01-03
摘要： Copper powder with enhanced sinterability and process for producing same is disclosed which comprises fluid energy milling dendritic copper powder particles having a mean particle size of no greater than about 25 micrometers in diameter to produce a deagglomerated cold-worked powder wherein the particles are essentially equiaxed in shape and are of a mean particle size of no greater than about 7 micrometers in diameter.
摘要翻译： 公开了具有增强的可烧结性的铜粉末和其制造方法，其包括流体能量研磨直径为不大于约25微米的平均粒度的树枝状铜粉末颗粒，以产生解散的冷加工粉末，其中颗粒基本上等轴于 并且具有不大于约7微米直径的平均粒度。
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52.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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53.发明授权Hydrometallurgical process for producing finely divided copper and copper alloy powders 失效用于生产细分铜和铜合金粉末的湿法冶金工艺
公开(公告)号：US4778517A
公开(公告)日：1988-10-18
申请号：US54553
申请日：1987-05-27
CPC分类号： B22F1/0048
摘要： A process for producing finely divided spherical copper copper alloy powders comprises forming an aqueous solution of copper and alternatively other metal values forming a reducible metallic material from the solution, reducing the material 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 an essential spherical metal alloy particles.
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公开(公告)号：US4756746A
公开(公告)日：1988-07-12
申请号：US904316
申请日：1986-09-08
IPC分类号： B22F1/00 , C03B19/10 , C04B35/653
CPC分类号： C04B35/653 , B22F1/0048 , C03B19/1025 , Y10S75/953
摘要： A powdered material and a process for producing the material are disclosed. The powdered material consists essentially of spherical particles selected from the group consisting of metals, metal alloys, ceramic glasses, crystalline ceramic materials, and combinations of these. The material is essentially free of elliptical shaped material and elongated particles having rounded ends. The material has a particle size of less than about 20 micrometers. The process for making the spherical particles involves mechanically reducing the size of a starting material to produce a finer powder the major portion of which has a particle size of less than about 20 micrometers. The finer powder is entrained in a carrier gas and passed through a high temperature zone at a temperature above the melting point of the powder to melt at least about 50% of the powder and form the spherical particles of the melted portion. The powder is then directly solidifed.
摘要翻译： 公开了一种粉末材料及其制造方法。 粉末材料基本上由选自金属，金属合金，陶瓷玻璃，结晶陶瓷材料以及它们的组合的球形颗粒组成。 该材料基本上不含椭圆形材料和具有圆形端部的细长颗粒。 该材料具有小于约20微米的粒度。 制造球形颗粒的方法包括机械地减小起始材料的尺寸以产生更细的粉末，其主要部分具有小于约20微米的粒度。 更细的粉末被夹带在载气中，并在高于粉末熔点的温度下通过高温区域，以熔化至少约50％的粉末并形成熔融部分的球形颗粒。 然后将粉末直接固化。
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55.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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