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： US09610337申请日： 2000-07-05
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公开(公告)号： US06593257B1公开(公告)日： 2003-07-15
- 发明人: Hideki Nagata , Hideki Kawai , Toshiharu Mori , Hiroshi Yuki , Kazuhiko Ishimaru
- 申请人： Hideki Nagata , Hideki Kawai , Toshiharu Mori , Hiroshi Yuki , Kazuhiko Ishimaru
- 优先权： JP11-191747 19990706
- 主分类号： C03C1004
- IPC分类号： C03C1004
摘要：
A glass ceramics composition for recording disk substrate consists essentially, expressed in terms of weight percent on the oxide basis, of from 65 to 80 wt % of SiO2, from 3 to 15 wt % of Al2O3, from 3 to 15 wt % of Li2O, from 0.2 to 5 wt % of P2O5, and from 0.1 to 15 wt % of ZrO2, wherein a value of ZrO2/P2O5 is within a range from 1.1 to 8.5, expressed in terms of weight percent on the oxide basis.
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