Initial Sintering of MnXO-Al2O3 |
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| Authors: | J. R. KESKI I. B. CUTLER |
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| Affiliation: | Department of Ceramic Engineering, University of Utah, Salt Lake City, Utah 8411 |
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| Abstract: | Effects of manganese oxide on the initial sintering kinetics of compacts of 5-μ diameter alumina were studied by isothermal shrinkage measurements from 1450° to 1650°C. The observed rates were characterized by assuming a volume-diffusion mechanism. Variations in sintering rate with both oxygen partial pressure in the furnace and impurity concentration, as well as the observed activation energy, indicated oxygen-ion diffusion was the rate-limiting step during densification. |
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