SILICON NITRIDE-BASED COMPOSITES

The application of silicon nitride, as well as other ceramics, is limited by its tendency towards catastrophic failure and thus reduced reliability. Additional improvements in the strength and fracture toughness of these materials would considerably expand their range of application. Reinforcement of the monolithic ceramics through the application introduction of fibers, particulates and whiskers offers a potential for such property improvements. Research and development work in this area, specific to silicon nitride, is reviewed with an emphasis on current developments.