Process for the production of composite moldings with complex internal geometry.

摘要

Composite articles with internal surface are prepared by heating a porous compact formed about an insert body of infiltrant material. The insert body has an external surface corresponding to the desired internal surface of the article and consists of a material having a melting temperature less than that of the article. The porous compact has substantially the net shape of the article and is made of a material that is wetted by liquid insert material and has a sintering temperature greater than the wetting temperature of the insert material. The compact is heated to a temperature such that the insert substantially melts and infiltrates the porous compact forming the finished composite article.