发明授权
- 专利标题： Sintered alumina abrasive grain and abrasive products
- 专利标题（中）： 烧结氧化铝磨粒和磨料产品
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申请号： US75569申请日： 1993-06-16
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公开(公告)号： US5387268A公开(公告)日： 1995-02-07
- 发明人: Tadashi Hiraiwa , Fumiyoshi Ono
- 申请人： Tadashi Hiraiwa , Fumiyoshi Ono
- 申请人地址： JPX Tokyo
- 专利权人： Showa Denko Kabushiki Kaisha
- 当前专利权人： Showa Denko Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX3-296375 19911016
- 主分类号： C04B35/111
- IPC分类号： C04B35/111 ; C04B35/117 ; C09C1/68 ; C09K3/14 ; C04B35/10
摘要：
A sintered alumina abrasive grain comprised of alpha-alumina crystals and a spinel crystalline phase which does not form a continuous phase but is in the form of discrete crystals which are deposited on triple points in alumina crystal boundaries and are substantially uniformly distributed over the abrasive grain. Preferably, the alpha-alumina crystals have an average particle diameter not larger than 1 micron, and the spinel crystalline phase is composed of alumina and an oxide of a metal selected from Ni, Mg and Zn.
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