发明名称 |
Alumina glass composition and magnetic head incorporating same |
摘要 |
There are described a glass composition and a magnetic head containing the same, wherein the glass composition comprises an oxide of an alkali metal or alkaline earth, and at least one non-alkali metal oxide in an amount sufficient to provide a coefficient of thermal expansion of 80-170x10-7 DEG C.-1, the composition featuring from 5-15 mole % Al2O3 and an amount of a compatible glass former sufficient to insure the Al2O3 is soluble in the composition.
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申请公布号 |
US4544974(A) |
申请公布日期 |
1985.10.01 |
申请号 |
US19830543678 |
申请日期 |
1983.10.20 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
WEST, JR., BRADFORD D.;BERCHTOLD, JEAN |
分类号 |
C03C3/064;C03C3/145;C03C3/19;C03C3/253;C03C4/00;C03C8/24;C03C27/04;G11B5/147;G11B5/235;(IPC1-7):C03C3/16 |
主分类号 |
C03C3/064 |
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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