Atomic scale analysis of cubic zirconia grain boundaries

E. C. Dickey, X. Fan, M. Yong, Susan B. Sinnott, S. J. Pennycook

Research output: Contribution to journalArticlepeer-review

Abstract

The core structures of two symmetric tilt [001] grain boundaries in yttria- stabilized cubic zirconia are determined by Z-contrast imaging microscopy. In particular, near-∑=13 (510) and ∑=5 (310) boundaries are studied. Both grain boundaries are found to be composed of periodic arrays of basic grain-boundary structural units, whose atomic structures are determined from the Z-contrast images. While both grain boundaries maintain mirror symmetry across the boundary plane, the 36° boundary is found to have a more compact structural unit than the 24° boundary. Partially filled cation columns in the 24° boundary are believed to prevent cation crowding in the boundary core. The derived grain boundary structural models are the first developed for ionic crystals having the fluorite structure.

Original languageEnglish (US)
Pages (from-to)323-328
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume589
StatePublished - Dec 1 2000

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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