Ceramic material permitting the passage of fluids and based...

Details Ceramic material permitting the passage of fluids and based... Ceramic material permitting the passage of fluids and based...

C - Chemistry, Metallurgy

04

B

39/104, 25/125,

C04B 38/00 (2006.01) B01D 39/20 (2006.01) B01J 21/18 (2006.01) B01J 35/04 (2006.01) B01J 37/00 (2006.01) C04B 38/06 (2006.01)

Patent

CA 1321470

CERAMIC MATERIAL PERMITTING THE PASSAGE OF FLUIDS AND BASED ON SILICON POWDER REACTION-BONDED IN THE PRESENCE OF CARBON ABSTRACT OF THE DISCLOSURE A ceramic material made of a skeleton reaction-bonded silicon powder is distinguished by an open-cell pore structure produced by using a matrix of an appropriately shaped polyurethane foam structure. For the preparation, a foam matrix is coated with a suspension of silicon powder, synthetic resin and solvent and is subjected to a heat treatment, during which the foam matrix is expelled and the silicon is stabilized. The thermally and chemically stable product can be used, for example, as a filter medium for metal melts, as a catalyst carrier, or as a boundary medium between the flame zone and unignited combustible mixtures in burners.

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