C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 38/06 (2006.01) C04B 38/00 (2006.01) F16C 33/02 (2006.01) F16C 33/04 (2006.01)
Patent
CA 2146399
The invention relates to bearing materials of porous SiC having a trimodal pore composition and also a process for their production. The porous bearing material of pressureless-sintered SiC having from 3 to 10% by volume of independent closed pores having a trimodal pore composition consisting of micropores (M), fiber- shaped macropores (F) and spherical macropores (S), where the amounts in the pore system F - M - S (Figure 1) are fixed by the trapezoidal area having the corner points a = 10%M - 80%F - 10%S b = 10%M - 10%F - 80%S c = 40%M - 10%F - 50%S d = 40%M - 50%F - 10%S and the micropores have a diameter of less than or equal to 5 µm and the fiber-shaped macropores have a diameter of less than or equal to 30 µm and a length of less than or equal to 80 µm and the spherical macropores have a diameter of less than or equal to 70 µm, and have a flexural strength of at least 250 MN/M2.
Fundus Michael
Greim Jochen
Katheininger Anton
Schwetz Karl Alexander
Gowling Lafleur Henderson Llp
Wacker-Chemie Gmbh
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