Silicon carbide with controlled porosity

Details Silicon carbide with controlled porosity Silicon carbide with controlled porosity

1995-06-05

1996-12-31

Group, Karl

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 89, 501 90, 501 91, C04B 35569, C04B 35576

Patent

active

055894283

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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