Two-stage sintering inhibits abnormal grain growth during beta to alpha transformation in SiC
Journal Article
·
· Journal of the European Ceramic Society
OSTI ID:940556
Free sintering of SiC with Al, B, and C additions in two successive stages, first under nitrogen and then under argon, produced a near full-density ceramic with equiaxed grain structure. The beta to alpha transformation proceeded to completion; however, the grain shape remained equiaxed due to the action of nitrogen present during the first stage of sintering. It is found that the beta to alpha transformation is necessary but not sufficient for producing the microstructure of interlocking plates found in high-toughness SiC.
- Research Organization:
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
- Sponsoring Organization:
- Materials Sciences Division
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 940556
- Report Number(s):
- LBNL-1103E
- Journal Information:
- Journal of the European Ceramic Society, Journal Name: Journal of the European Ceramic Society Vol. 28; ISSN 0955-2219; ISSN JECSER
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:6231611