Effects of Grain Size and Ceria Addition on Ageing Behaviour and Tribological Properties of Y-TZP Ceramics

Jansen, S.R. and Winnubst, A.J.A. and He, Y.J. and Verweij, H. and Varst van de, P.G.Th. and With de, G. (1998) Effects of Grain Size and Ceria Addition on Ageing Behaviour and Tribological Properties of Y-TZP Ceramics. Journal of the European Ceramic Society, 18 (5). pp. 557-563. ISSN 0955-2219

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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.
Item Type:	Article
Copyright:	© 1998 Elsevier
Faculty:	Science and Technology (TNW)
Research Group:	Inorganic Membranes (IM)
Link to this item:	http://purl.utwente.nl/publications/72305
Official URL:	http://dx.doi.org/10.1016/S0955-2219(97)00153-2
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