Graphite-coated shaped body made of sintered silicon carbide
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United States of America Patent
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Aug 17, 2004
Grant Date -
Jun 20, 2002
app pub date -
Sep 6, 2001
filing date -
Sep 14, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Shaped body based on polycrystalline SiC and having a density of greater than 90% of its theoretical density and an adherent graphite layer on its surface, wherein the graphite layer is crystalline, has a thickness of 0.1-100 .mu.m and has been produced by thermal surface decomposition of the SiC after it has been sintered to closed porosity.
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