FACTORS AFFECTING SINTERABILITY OF OXIDE POWDERS. BeO AND MgO
Data on the sintering of BeO and MgO were reviewed with reference to the diffusion sintering model devised by Kuczynski and Herring. Sintering rates for compacts of the dead-burned oxide powders were in agreement with the bulk diffusion model with grain-boundary sinks, but those of the active low-calcined powders were not. During isothermal sintering the low-calcined powders had very high initial shrinkages, after which the shrinkage rate was low, corresponding to a rate index of about 10. The initial high rate was ascribed to crystallization and coalescence of the material comprising individual particles. The activation energy associated with the sintering of active BeO was estimated at 249 kcal per mole. (auth)
- Research Organization:
- Battelle Memorial Inst., Columbus, Ohio
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-13-011897
- OSTI ID:
- 4273176
- Journal Information:
- Journal of the American Ceramic Society (U.S.), Journal Name: Journal of the American Ceramic Society (U.S.) Vol. Vol: 42; ISSN JACTA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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