The influence of grain boundaries and interphase boundaries on the creep response of silicon nitride

摘要

The creep response of single-phase ceramic materials is often controlled by grain boundary diffusion creep processes. In multiphase ceramics such as silicon nitride however, the effect of grain boundaries and interfaces on creep is more complex, but nonetheless pervasive. In this paper I will summarize this behaviour with reference primarily to our own work in recent years.