Method of densification of a porous substrate by a matrix containing carbon.

摘要

A slip (12) containing a submicronic carbon powder is placed on one side of a substrate to be densified (10) and a pressure difference is established to force the slip to pass through the substrate while the liquid which has passed through the substrate is filtered to retain the carbon powder inside the substrate. When the densification of the substrate by the carbon powder is finished the densified substrate is dried and a precursor of carbon, introduced into the substrate in order to bond the powder forming the matrix, is converted into carbon by carbonisation. <IMAGE>