Degradation of yttria stabilized zirconia at 370 K under a low applied stress

Junguo Li, Lianmeng Zhang, Qiang Shen, Toshiyuki Hashida

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


The tetragonal-to-monoclinic phase transformation in ZrO2-3mol.%Y2O3 containing 0-5% Al2O3 during aging in hot water (370 K) under 100 MPa stress is investigated. It is found that while a small tensile stress accelerates the degradation, a compressive stress has little affect on the degradation. The degradation of PSZ under tensile stress is considered to be caused by the reaction between Y2O3 and H2O. Small amount of Al2O3 addition does not change the degradation mechanism of PSZ, but it prevents further continuation of degradation when the transformed volume reaches a certain value.

Original languageEnglish
Pages (from-to)26-30
Number of pages5
JournalMaterials Science and Engineering A
Issue number1-2
Publication statusPublished - 2001 Jan 15

ASJC Scopus subject areas

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


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