Stability of Tetragonal ZrO <sub>2</sub> Particles in Ceramic Matrices

書誌事項

公開日
1982-12
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1111/j.1151-2916.1982.tb09946.x
公開者
Wiley

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説明

<jats:p> The stability of tetragonal ZrO <jats:sub>2</jats:sub> particles in ceramic matrices was considered, with particular reference to Al <jats:sub>2</jats:sub> O <jats:sub>3</jats:sub> ‐ZrO <jats:sub>2</jats:sub> composites and to partially stabilized ZrO <jats:sub>2</jats:sub> . In both systems, particles above a “critical” size transform martensitically to monoclinic symmetry on cooling to room temperature. The critical factors that could affect the size dependence of the transformation temperature—surface and strain energy effects, the chemical free energy driving force, and the difficulty of nucleating the martensitic transformation—were considered. Nucleation arguments are probably the most important. </jats:p>

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