CERAMIC MATERIALS WITH INCREASED CRYSTALLINITY FROM SILAZANE POLYMERS

摘要

CERAMIC MATERIALS WITH INCREASED CRYSTALLINITY FROM SILAZANE POLYMERS A method of preparing ceramic materials with increased levels of crystalline SiC and/or Si3N4 is described. The method consists of firing a mixture of a R3SiNH-containing silazane polymer and an inorganic compound selected from the group consisting of iron compounds, cobalt compounds, nickel compounds, and copper compounds to an elevated temperature of at least 750.degree.C under an inert atmosphere or in a vacuum until a ceramic material with increased levels of crystalline SiC and/or Si3N4 is obtained.