Silicon carbide with controlled porosity
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United States of America Patent
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Dec 31, 1996
Issued Date -
N/A
app pub date -
Jun 5, 1995
filing date -
Jul 8, 1992
priority date (Note) -
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Abstract
Silicon carbide sintered bodies having controlled porosity in the range of about 2 to 12 vol %. in which the pores are generally spherical and about 50 to 500 microns in diameter, are prepared from raw batches containing a polymer fugitive. Sintered bodies in the form of mechanical seal members exhibit lower power consumption at low PV and, in addition, lower wear rates at high PV in comparison to commercially available silicon carbide seal members.
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