Determination of crystallization mechanisms and correlation of grain boundary morphology to mechanical properties in silicon-nitride (microstructure, transmission electron microscopy, mechanical properties)
High temperature strength in silicon nitride is limited by glassy second phases which result from the additive fluxing agents necessary in sintering. To improve the high temperature mechanical properties, controlled crystallization of the grain boundary glassy phase was investigated in two silicon nitride systems: Mg, Si, Al/O, N and Y, Si, Al/O, N. Bulk compositions were controlled during processing so that garnet crystallized from the Y containing silicon nitride and cordierite crystallized from that
Thesis, Dissertation, English, 1986