Title:
磁気記録媒体用ガラス基板
Document Type and Number:
Japanese Patent JP7276645
Kind Code:
B2
Abstract:
To provide a glass substrate for a magnetic recording medium which does not easily cause deflection or fluttering during high-speed rotation and matches thermal expansion coefficient of a spindle material (for example, stainless steel or the like).SOLUTION: In a glass substrate for a magnetic recording medium of the present invention, an average linear thermal expansion coefficient in the temperature range of 30 to 380°C is 30×10/°C or more, and Young's modulus is 80 GPa or more.SELECTED DRAWING: Figure 1
Inventors:
Tetsuya Murata
Miku Fujii
Ryota Suzuki
Miku Fujii
Ryota Suzuki
Application Number:
JP2018110150A
Publication Date:
May 18, 2023
Filing Date:
June 08, 2018
Export Citation:
Assignee:
Nippon Electric Glass Co., Ltd.
International Classes:
G11B5/73; C03C3/087; C03C3/091; C03C3/093; C03C3/095
Domestic Patent References:
| JP2015062150A | ||||
| JP2007161552A | ||||
| JP2017007940A | ||||
| JP2013254555A | ||||
| JP2002050026A | ||||
| JP2002211946A |
Foreign References:
| US20080130171 | ||||
| CN104211300A |
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