Effect of MgO Solute on the Kinetics of Grain Growth in A1 <sub>2</sub> O <sub>3</sub>

Stephen J. Bennison, Martin P. Harmer

Journal of the American Ceramic Society · 1983 · 150 citations · 14 references

Concepts

Abstract

The kinetics of grain growth in fully dense Al 2 O 3 with and without MgO solute additions were measured. The MgO was found to retard boundary migration and to rkvelop more uniform microstructures. A grain‐growth mechanism involving solute partitioning of segregated ions (calcium and magnesium) between different boundary types is proposed. Implications regarding the sintering of Al 2 O 3 are discussed.

References

14