发明授权
- 专利标题: Spherical precious metal based powder particles and process for producing same
- 专利标题(中): 球形贵金属粉末颗粒及其制备方法
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申请号: US905013申请日: 1986-09-08
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公开(公告)号: US4711660A公开(公告)日: 1987-12-08
- 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 precious metal based spherical particles which are 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 which is then entrained in a carrier gas and passed through a high temperature zone above the melting point of the finer powder to melt at least about 50% by weight of the powder and form spherical particles of the melted portion. The powder is directly solidified.
公开/授权文献
- US5803320A Carbonated coffee beverage dispenser 公开/授权日:1998-09-08
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