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    • 23. 发明授权
    • 수지상금속입자의형성방법
    • KR100451332B1
    • 2004-11-16
    • KR1019980706483
    • 1996-12-13
    • 마이크롤리스 코포레이션
    • 젤러,로버트,에스.브로만,크리스토퍼,제이.
    • B22F1/00B01D39/20B22F3/10
    • B01D67/0041B01D39/06B01D39/2034B01D39/2044B01D39/2075B01D71/022B22F1/0096B22F2009/045B22F2998/10B22F9/04
    • A method for forming dendritic metal powders, comprising the steps of: (1) heating a powder comprising non-dendritic particles, under conditions suitable for initial stage sintering, to form a lightly sintered material; and (2) breaking the lightly sintered material to form a powder comprising dendritic particles. In one embodiment, the lightly sintered material is broken by brushing the material through a screen. Another aspect of the present invention comprises the dendritic particles that are produced by the method described above. These particles can comprise any suitable metal, such as transition metals, rare earth metals, main group metals or metalloids or an alloy of two or more such metals. The particles can also comprise a ceramic material, such as a metal oxide. These particles are characterized by a dendritic, highly anisotropic, morphology arising from the fusion of substantially non-dendritic particles, and by a low apparent density relative to the substantially non-dendritic starting material. The present dendritic particles can be of high purity, and substantially free of carbon contamination.
    • 一种形成树枝状金属粉末的方法,包括以下步骤:(1)在适于初始阶段烧结的条件下加热包含非枝晶颗粒的粉末以形成轻度烧结的材料; 和(2)将轻度烧结的材料破碎以形成包含树枝状颗粒的粉末。 在一个实施例中,轻烧结材料通过将材料刷过筛网而被破坏。 本发明的另一方面包括通过上述方法生产的树枝状颗粒。 这些颗粒可以包含任何合适的金属,例如过渡金属,稀土金属,主族金属或准金属或两种或更多种这样的金属的合金。 颗粒还可以包含陶瓷材料,例如金属氧化物。 这些颗粒的特征在于树枝状,高度各向异性,由基本上非树枝状颗粒的熔合形成的形态,以及相对于基本上非树枝状的起始材料具有低表观密度。 本树枝状颗粒可以具有高纯度,并且基本上没有碳污染。