发明名称 |
MANUFACTURING METHOD OF GLASS SUBSTRATE FOR MAGNETIC DISK, MAGNETIC DISK, AND MAGNETIC DATA RECORDING/REPRODUCING DEVICE |
摘要 |
A manufacturing method of a glass substrate for a magnetic disk is provided whereby nano pits and/or nano scratches cannot be easily produced in polishing a principal face of a glass substrate using a slurry containing zirconium oxide as an abrasive. The manufacturing method of a glass substrate for a magnetic disk includes, for instance, a polishing step of polishing a principal face of a glass substrate using a slurry containing, as an abrasive, zirconium oxide abrasive grains having monoclinic crystalline structures (M) and tetragonal crystalline structures (T). |
申请公布号 |
PH12015000215(A1) |
申请公布日期 |
2017.01.09 |
申请号 |
PH2015120150002 |
申请日期 |
2015.06.23 |
申请人 |
HOYA CORPORATION |
发明人 |
TAMAKI, MASANORI;NAKAGAWA, HIROKI;TAWARA, YOSHIHIRO |
分类号 |
B24B37/04;C03C21/00;G11B5/73 |
主分类号 |
B24B37/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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