Journal article
Compositional dependence of creep behaviour in silicon nitride ceramics
Abstract
The compressive creep behaviour of undoped and Ba-doped silicon nitride ceramics were studied at 1400°C in air. Precise density meaurements were used to determine cavitation during creep. Microstructural evolution was examined by means of transmission electron microscopy. The Ba-doped material gave a stress exponent of 2.6 and exhibited extensive cavitation, plus strain whorls at grain boundaries. The undoped material, however, exhibited no …
Authors
Jin Q; Ning XG; Wilkinson DS; Weatherly GC
Journal
Canadian Ceramics, Vol. 65, No. 3, pp. 211–214
Publication Date
August 1, 1996
ISSN
1486-0945