发明授权
- 专利标题: Process for producing iron group based and chromium based fine spherical particles
- 专利标题(中): 生产铁基和铬基微球的方法
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申请号: US905015申请日: 1986-09-08
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公开(公告)号: US4778515A公开(公告)日: 1988-10-18
- 发明人: Preston B. Kemp, Jr. , Walter A. Johnson
- 申请人: Preston B. Kemp, Jr. , Walter A. Johnson
- 申请人地址: CT Stamford
- 专利权人: GTE Products Corporation
- 当前专利权人: GTE Products Corporation
- 当前专利权人地址: CT Stamford
- 主分类号: B22F1/00
- IPC分类号: B22F1/00
摘要:
A powdered material and a process for producing the material are disclosed. The powdered material consists essentially of iron group based and chromium based spherical particles. 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% by weight of the powder and form the spherical particles of the melted portion. The powder is then directly solidified.
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