Patent ID: 8303889
Filing Date: 2012-11-06
Classification: C04B

Abstract:
1. The process for fabricating a sintered porous body, comprising: a) mixing a first powder of SiC particles, whose median diameter is less than 20 μm, in a solvent and in the presence of a binder, b) agglomerating said particles in order to form granules whose average size is in a range between 5 and 500 μm, c) mixing the granules from b) with a second powder of SiC particles whose median diameter is greater than 5 μm and at least twice that of said first powder, in the presence of a solvent and of a binder, in proportions designed to allow shaping of the mixture, d) shaping the mixture obtained during c) so as to obtain a hollow body, e) eliminating the solvent and the binders from the body by thermal treatment and/or by use of microwaves, and f) heat treating the body at a sintering temperature in a range between 1600° C. and 2400° C. in order to obtain a sintered porous body.