发明公开
- 专利标题： Solid state process for the conversion of a polycrystallic ceramic material to a single crystal, particulary sapphir
- 专利标题（中）： 对于多晶陶瓷材料转化成单晶，特别是蓝宝石固态方法。
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申请号： EP94303398.5申请日： 1994-05-11
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公开(公告)号： EP0625594A2公开(公告)日： 1994-11-23
- 发明人: Maxwell, Randolph E. , Scott, Curtis Edward , Kaliszewski, Mary Sue , Jones, Marshall Gordon , Levinson, Lionel Monty , Erikson, Carl Edward
- 申请人： GENERAL ELECTRIC COMPANY
- 申请人地址： 1 River Road Schenectady, NY 12345 US
- 专利权人： GENERAL ELECTRIC COMPANY
- 当前专利权人： GENERAL ELECTRIC COMPANY
- 当前专利权人地址： 1 River Road Schenectady, NY 12345 US
- 代理机构： Pratt, Richard Wilson
- 优先权： US64386 19930521
- 主分类号： C30B1/02
- IPC分类号： C30B1/02 ; C30B29/20
摘要：
A process for bulk conversion of a solid polycrystalline ceramic body to a single crystal body which comprises heating only a portion of said polycrystalline ceramic body with a localized energy source, without melting the entire said polycrystalline ceramic body, at a temperature and for a time sufficient to convert said polycrystalline ceramic body to said single crystal body.
In one embodiment of the invention, a dense polycrystalline alumina (PCA) article is converted to sapphire via a solid state conversion process.
A CO₂ laser energy source has been successfully employed as a localized energy source.
In one embodiment of the invention, a dense polycrystalline alumina (PCA) article is converted to sapphire via a solid state conversion process.
A CO₂ laser energy source has been successfully employed as a localized energy source.
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