Effects of grain size and ceria addition on ageing behaviour and tribological properties of Y-TZP ceramics

S.R. Jansen, A.J.A. Winnubst*, Y.J. He, H. Verweij, P.G.Th. van der Varst, G. de With

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

25 Citations (Scopus)

Abstract

The influence was investigated of ceria addition and the grain size on ageing and wear behaviour of Y-TZP ceramics. Two types of ceramics were studied: ZY5 (95 mole% ZrO2 and 5 mole% YO1·5) and ZY4Ce4 (92 mole% ZrO2, 4 mole% YO1·5, and 4 mole%CeO2). Each ceramic was sintered with grain sizes of 0·18 μm (95% dense) or 0·5 μm (98% dense). Only the ZY5 ceramic with a grain size of 0·5 μm showed degradation to monoclinic zirconia (= ageing) after a treatment in water at 180°C. This ceramic was also the only one in which a phase transformation was observed after wear tests in water for a pin (SiC) on plate test configuration. However, this transformation was found not to affect the wear rate. Wear mechanisms were investigated for testing in dry nitrogen and water environment.
Original languageEnglish
Pages (from-to)557-563
Number of pages7
JournalJournal of the European Ceramic Society
Volume18
Issue number5
DOIs
Publication statusPublished - 1998

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