发明名称 |
CERAMIC SUBSTRATE, MAGNETIC HEAD SLIDER, HARD DISK DRIVE, AND METHOD FOR MANUFACTURING CERAMIC SUBSTRATE |
摘要 |
PROBLEM TO BE SOLVED: To provide a ceramic substrate capable of suppressing chipping during a cutting time, and excellent in machinability, and to provide a magnetic head and a method for manufacturing a ceramic substrate.SOLUTION: A ceramic substrate is a ceramic substrate having a first main surface 10a and a second main surface 10b, and constituted of a ceramic material containing a ≥20 to ≤80 mass% metal carbide and alumina as main components. The ceramic substrate 10 contains a fine particle layer 12 having the average crystal particle size of a and a coarse particle layer 13 having the average crystal particle size of b, wherein the thickness t1 of the fine particle layer 12, the thickness T of the ceramic substrate 10, the average crystal particle size a and the average crystal particle size b satisfy following relations: 0.05T≤t1≤0.95T and 1.1≤b/a. |
申请公布号 |
JP2013180933(A) |
申请公布日期 |
2013.09.12 |
申请号 |
JP20120046233 |
申请日期 |
2012.03.02 |
申请人 |
HITACHI METALS LTD;NIPPON TUNGSTEN CO LTD |
发明人 |
SAKUMICHI HIDETAKA;AJITOMI SHINZO |
分类号 |
C04B35/10;C04B35/56;G11B5/127;G11B5/31;G11B5/60 |
主分类号 |
C04B35/10 |
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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