| 摘要 |
A powdered material and a process for producing same are disclosed. The powdered material essentially consists of spherical particles selected from the group consisting of metal based materials, 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 process for making the spherical particles involves mechanically reducing the size of a starting material to produce a finer powder. 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 solidified.
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