Member for supporting magnetic disc substrates, process of producing the same, and magnetic disc device using the same
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United States of America Patent
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Sep 8, 2009
Grant Date -
May 17, 2007
app pub date -
Dec 20, 2006
filing date -
Mar 28, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
. The ceramic sinter can be produced by a process including: sintering a ceramic sinter from a ceramic component and at least one conductive component selected from a group consisting of iron, niobium, tin zinc, copper, nickel, cobalt and chromium; machining the sinter into a desired shape of a member of supporting a magnetic disc substrate, and annealing the sinter such that the ceramic sinter has conductive aggregation deposited on its peripheral surface, wherein in the annealing step, the member is heated at a temperature in between a glass transition temperature of the sinter minus 500° C. and a softening temperature of the sinter plus 600° C.
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