Influence of grain boundary sliding on diffusion in yttria doped zirconia

Ghosh, Santonu and Swaroop, Sathya and Fielitz, Peter and Borchardt, Guenter and Chokshi, Atul H (2011) Influence of grain boundary sliding on diffusion in yttria doped zirconia. In: Journal of the European Ceramic Society, 31 (6). pp. 1027-1032.

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Abstract

Grain boundary sliding during high temperature deformation can lead to stress concentrations and an enhancement of diffusion in mobile boundaries. Experiments were conducted on a fine grained 3 mol% yttria stabilized tetragonal zirconia, under conditions associated with superplastic flow involving grain boundary sliding. Tracer diffusion studies under creep conditions and without load indicate that there is no enhancement in either the lattice or grain boundary diffusivities. The experimental creep data are consistent with an interface controlled diffusion creep mechanism. (C) 2011 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	Journal of the European Ceramic Society
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Grain boundaries;Diffusion;Superplasticity;Zirconia;Creep
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	20 Apr 2011 05:30
Last Modified:	20 Apr 2011 05:30
URI:	http://eprints.iisc.ac.in/id/eprint/36734

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