METHOD OF FORMING A CERAMIC PRODUCT

摘要

Ceramic materials which comprise a transition metal carbide, nitride or carbonitride and from 5 to 90 volume percent zirconia. In general, these materials have a bulk density greater than 75 percent of theoretical and a modulus of rupture greater than 200 MPa. The materials may be formed by mixing together a finely divided particulate transition metal carbide, nitride or carbonitride and zirconia, fabricating the mixture into a ceramic product of the desired shape, and heating the fabricated mixture in a low oxygen containing atmosphere to a temperature in the range from 1300C to 2000C to produce the ceramic product.