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Superplasticity in zirconia-based ceramics

Chokshi, Atul H (1998) Superplasticity in zirconia-based ceramics. In: TMS Annual Meeting on Superplasticity and Superplastic Forming, 16-19 Feb. 1998, San Antonio, TX, USA, pp. 257-265.

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Following the initial report by Wakai (1986) of an elongation of over 100% in a 3 mol% yttria stabilized zirconia (3YTZ), superplasticity has now been demonstrated in a wide range of zirconia containing ceramics, with a maximum elongation of over 1000% in a glass containing ceramic. The presence of trace impurities can have a very significant effect on the mechanical properties of these ceramics. The report examines data on several superplastic zirconias to evaluate the role of impurities in these materials. It demonstrated that trace impurities appear to facilitate grain boundary sliding in superplastic zirconias, while they apparently hinder grain boundary sliding in superplastic metals

Item Type: Conference Paper
Publisher: The Minearls, Metals and Materials Society (TMS)
Additional Information: Copyright of this article belongs to The Minerals, Metals and Materials Society (TMS).
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 29 May 2007
Last Modified: 27 Aug 2008 12:40
URI: http://eprints.iisc.ac.in/id/eprint/10084

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