(Massachusetts Institute of Technology Materials Science Program: Progress report)

Research in ceramics has continued in the following areas: electrical and optical properties, grain boundary mobility, liquid phase sintering and atomic transport; structural effects on grain boundary migration in high-purity A1/sub 2/O/sub 3/; mobility in alkali halides; effects of dopants on sintering of alumina; mass transport in SiC; and defects, diffusion and grain boundaries in SiC and SiN. Results are briefly discussed. (CBS)