Grain-Growth Kinetics for Alumina in the Absence of a Liquid Phase |
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| Authors: | Stephen J. Bennison Martin P. Harmer |
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| Affiliation: | Materials Research Center, Coxe Laboratory #32, Lehigh University, Bethlehem, Pennsylvania 18015 |
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| Abstract: | The kinetics of grain growth in fully dense Al2O3 with and without MgO solute additions were measured for high-purity samples containing no liquid phases. The MgO was found to suppress the grain-boundary migration rate by a factor of 50. Compensating lattice defects are suggested to play a role in grain-growth inhibition. Implications of these results to the sintering of Al2O3 are discussed. |
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