发明授权
- 专利标题： Transparent polycrystalline material and production process for the same
- 专利标题（中）： 透明多晶材料和生产工艺相同
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申请号： US13901268申请日： 2013-05-23
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公开(公告)号： US09384888B2公开(公告)日： 2016-07-05
- 发明人: Takunori Taira , Jun Akiyama , Shigeo Asai , Kunihiko Hara
- 申请人： INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION, NATIONAL INSTITUTES OF NATURAL SCIENCES , GENESIS RESEARCH INSTITUTE, INCORPORATED
- 申请人地址： JP Tokyo JP Aichi
- 专利权人： INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION, NATIONAL INSTITUTES OF NATURAL SCIENCES,GENESIS RESEARCH INSTITUTE, INCORPORATED
- 当前专利权人： INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION, NATIONAL INSTITUTES OF NATURAL SCIENCES,GENESIS RESEARCH INSTITUTE, INCORPORATED
- 当前专利权人地址： JP Tokyo JP Aichi
- 代理机构： IP & T Group LLP
- 优先权： JP2008-329934 20081225
- 主分类号： B29C39/00
- IPC分类号： B29C39/00 ; C04B35/00 ; C04B35/447 ; C04B35/495 ; C04B35/50 ; B28B1/26 ; H01F41/02 ; B28B1/00 ; C30B28/00 ; C30B29/22 ; C30B29/30 ; C30B30/04 ; C04B35/645 ; H01S3/16
摘要：
Upon producing a transparent polycrystalline material, a suspension liquid (or slurry 1) is prepared, the suspension liquid being made by dispersing a raw-material powder in a solution, the raw-material powder including optically anisotropic single-crystalline particles to which a rare-earth element is added. A formed body is obtained from the suspension liquid by means of carrying out slip casting in a space with a magnetic field applied. On this occasion, while doing a temperature control so that the single-crystalline particles demonstrate predetermined magnetic anisotropy, one of static magnetic fields and rotary magnetic fields is selected in compliance with a direction of an axis of easy magnetization in the single-crystalline particles, and is then applied to them. A transparent polycrystalline material is obtained by sintering the formed body, the transparent polycrystalline material having a polycrystalline structure whose crystal orientation is controlled.
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