Abstract

The inherently brittle nature of ceramics, arising from their lack of plastic deformation mechanisms at ambient temperatures, subjects their macroscopic mechanical properties to microscopic flaws, such as processing voids, secondary phases, and/or grain boundaries. Advances in ceramic processing have curtailed the detrimental aspects of the former two flaw types. Utilizing recent advances in microstructural characterization techniques, the structure and chemistry of grain boundaries, and/or interfaces in ceramics composites, can be engineered to actually enhance mechanical properties.1–3 Thus, future improvements in ceramic properties via the control of ceramic microstructure requires a comprehensive knowledge of atomic structure and chemical composition of interfaces.

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