Abstract
Grain boundaries, phase boundaries, and void surfaces are discussed. The need for better grain boundary models for ionic materials is demonstrated by noting some charge problems of such boundaries. Second-phase accumulations at grain boundaries in bicrystalline and polycrystalline specimens are shown and the relationship of such accumulations to sintering, grain growth, and mechanical properties is discussed. Methods to improve and extend the study of grain boundaries are described. Boundaries between different phases are also briefly discussed, with particular reference to ceramic alloying. Interrelationships between voids, impurities, and dislocation phenomena are considered, and evidence of impurity accumulations at or near voids in single and polycrystalline bodies is presented. Methods of reducing mechanical problems resulting from these internal surfaces are discussed.
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Rice, R.W. (1966). Internal Surfaces of MgO. In: Kriegel, W.W., Palmour, H. (eds) The Role of Grain Boundaries and Surfaces in Ceramics. Materials Science Research. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-6311-6_23
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DOI: https://doi.org/10.1007/978-1-4899-6311-6_23
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