| abstract |
A process for making open-celled silicon carbide inserts ( 20 ) that allow metal infiltration to create metal-matrix composite part ( 100, 300 ) used for rubbing/wear components, such as an open-celled ceramic ring. The open-celled ceramic insert ( 20 ) is infiltrated by cast iron, and produces no negative effects to the iron casting process or the final metal-matrix composite product ( 100, 300 ) such as casting porosity or gas build-up inside the mold. Inserts ( 20 ) constructed in accordance with the invention enable manipulation and control over the density and weight of final metal-matrix composite products ( 100, 300 ). It is an advantageous characteristic of such inserts ( 20 ) that they enable manipulation and control over the dampening characteristics of final metal-matrix composite products ( 100, 300 ). |