Sintered SIC mechanical seals having particular pore volume, shape, and diameter
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United States of America Patent
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Jan 13, 1998
Grant Date -
N/A
app pub date -
Dec 12, 1996
filing date -
Oct 17, 1990
priority date (Note) -
Expired
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Abstract
Mechanically strong and reduced friction porous silicon carbide sintered shaped articles, well adapted for the production, e.g., of leaktight mechanical packings and rotating bearing seals, have a total pore volume ranging from 4% to 18% thereof, the pores of which having an average diameter of the spherical closed pores ranging from 40 to 200 .mu.m.
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