TY  - RPRT
TI  - Microstructural changes in Beta-silicon nitride grains upon crystallizing the grain-boundary glass
AU  - Lee, William E.
AU  - Hilmas, Gregory E.
AU  - Lange, F. F.
PY  - 1991
UR  - https://ntrs.nasa.gov/citations/19910022649
ID  - 19910022649
ER  -