发明授权
- 专利标题: Glass-ceramic composition for recording disk substrate
- 专利标题(中): 用于记录盘基片的玻璃陶瓷组合物
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申请号: US09616029申请日: 2000-07-13
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公开(公告)号: US06573206B1公开(公告)日: 2003-06-03
- 发明人: Hideki Nagata , Toshiharu Mori , Hiroshi Yuki , Hideki Kawai , Akira Sugimoto , Kazuhiko Ishimaru
- 申请人: Hideki Nagata , Toshiharu Mori , Hiroshi Yuki , Hideki Kawai , Akira Sugimoto , Kazuhiko Ishimaru
- 优先权: JP11-200448 19990714
- 主分类号: C03C1008
- IPC分类号: C03C1008
摘要:
A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 47.5 to 52.5 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 6.2 to 7.8 wt % of TiO2.
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