C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/141, 400/7210
C04B 35/571 (2006.01) C04B 35/575 (2006.01) C08K 3/00 (2006.01) C08L 83/04 (2006.01)
Patent
CA 1337949
The preparation of highly densified ceramic bodies by the sintering of certain organopolysiloxanes filled with silicon carbide powders and metal-containing sintering aids is described. Such highly densified ceramic bodies can be prepared by either a pressureless sintering process or a hot press sintering process. The compositions of this invention can be formed into desired shapes and then sintered to form ceramic, shaped bodies with high densities. One advantage of the present invention is that the green bodies have relatively high strengths and thus can be easily handled and, if desired, machined before being sintered. The organopolysiloxanes useful in this invention must yield a ceramic char which contains free or excess carbon in addition to carbon in the form of silicon carbide upon pyrolysis to elevated temperatures.
610880
Atwell William Henry
Burns Gary Thomas
Saha Chandan Kumar
Dow Corning Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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