Method for preparing eutectic ceramics
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United States of America Patent
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Jul 15, 2003
Grant Date -
N/A
app pub date -
Apr 8, 2002
filing date -
Mar 29, 1999
priority date (Note) -
Expired
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Abstract
A method for advantageously producing sintered eutectic ceramics having a homogenous and dense structure, in particular, a eutectic containing a rare earth aluminate compound. The method allows eutectic powder of alumina and a rare earth aluminate compound to stand at a temperature of 1300-1700.degree. C. for 1-120 minutes under vacuum or in an non-oxidative atmosphere under a pressure of 5-100 MPa using a spark plasma sintering apparatus, thereby causing crystal growth to occur to obtain a rare earth aluminate eutectic structure crystal.
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