Aluminum nitride/aluminum oxynitride/group IV B metal nitride abrasive particles derived from a sol-gel process.

摘要

A multiphase, microcrystalline, nearly fully dense ceramic composite has grains comprising 0 to 95 volume percent aluminum nitride, 0 to 95 volume percent polytypes of aluminum nitride, 0 to 95 volume percent gamma-aluminum oxynitride, and 5 to 50 volume percent of at least one of titanium nitride, zirconium nitride and hafnium nitride. The composite is useful to prepare a ceramic abrasive grit or article.