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Role of diffusion creep in a superplastic zirconia-alumina composite

Swaroop, S and Chokshi, AH (2003) Role of diffusion creep in a superplastic zirconia-alumina composite. In: Materials Science Forum, 447-4 . pp. 323-328.

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The phenomenon of superplasticity has been demonstrated in several zirconia-alumina composites. However, the rate controlling mechanism has not yet been unambiguously identified, due to the limited data available on these materials in comparison with 3 mol% yttria stabilized tetragonal zirconia (3YTZ). The limited data on a zirconia-20 wt% alumina (3Y20A) composite suggest that the mechanical characteristics are similar to those of 3YTZ. The present experimental study on 3Y20A reveals the occurrence of diffusion creep. The experimental results are examined critically in terms of dislocation activity and diffusion creep, and their relevance to superplastic deformation.

Item Type: Editorials/Short Communications
Publication: Materials Science Forum
Publisher: Trans Tech Publications Inc..
Additional Information: Copyright of this article belongs to Trans Tech Publications Inc..
Keywords: ceramics;diffusion creep;dislocation activity; superplasticity;tetragonal zirconia
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 25 Aug 2011 06:14
Last Modified: 25 Aug 2011 06:14
URI: http://eprints.iisc.ac.in/id/eprint/40187

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