Improvement of thermal stability of Yttria-doped tetragonal zirconia polycrystals by alloying with various oxides

Tsugio Sato, Shiro Ohtaki, Tadashi Endo, Masahiko Shimada

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

Yttria-doped tetragonal zirconia polycrystals doped with 0-12 mol% of CaO, MgO, CeO2 and TiO2 were sintered at 1400-1600°C for 3 h, and the mechanical properties and thermal stability of the sintered bodies were evaluated. The degree of the tetragonal-to-monoclinic phase transformation by annealing in humid air or hot water decreased with both increasing amounts of CeO2 or TiO2 and decreasing grain size of ZrO2. Alloying with TiO2 accelerated the grain growth and depressed densification, but alloying with less than 6 mol% of CeO2 caused no significant changes in grain size and mechanical properties.

Original languageEnglish
Pages (from-to)167-177
Number of pages11
JournalInternational Journal of High Technology Ceramics
Volume2
Issue number3
DOIs
Publication statusPublished - 1986

ASJC Scopus subject areas

  • Engineering(all)

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