Transformation of Yttria‐Doped Tetragonal ZrO2 Polycrystals by Annealing in Water


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Phase changes and the microstructure resulting from low‐temperature annealing of yttria‐doped tetragonal ZrO2 polycrystals in water were investigated at 65° to 120°C. Tetragonal ZrO2 on the surface of the sintered body transformed to the monoclinic phase, accompanied by microcracking. The transformation rate in water, which was much greater than that in air, was first order with respect to surface concentration of tetragonal ZrO2. Nonaqueous solvents with a molecular structure containing a lone‐pair electron orbital opposite a proton donor site also greatly enhanced the transformation.

Original languageEnglish
Pages (from-to)356
Number of pages1
JournalJournal of the American Ceramic Society
Issue number6
Publication statusPublished - 1985 Jun

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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