Creep in TiO2 doped Zirconia: Implications for high strain rate superplasticity

Kini, Maya and Chokshi, Atul H (2010) Creep in TiO2 doped Zirconia: Implications for high strain rate superplasticity. In: 15th International Conference on the Strength of Materials (ICSMA 15), AUG 16-21, 2009 , Dresden, GERMANY.

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Abstract

In ceramics, dopants offer the possibility of higher creep rates by enhancing diffusion. The present study examines the potential for high strain rate superplasticity in a TiO2 doped zirconia, by conducting creep experiments together with microstructural characterization. It is shown that both pure and doped zirconia exhibit transitions in creep behaviour from Coble diffusion creep with n similar to 1 to an interface controlled process with n similar to 2. Doping with TiO2 enhances the creep rate by over an order of magnitude. There is evidence of substantial grain boundary sliding, consistent with diffusion creep.

Item Type:	Conference Paper
Additional Information:	Copyright of this article belongs to IOP Publishing ltd.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	25 Mar 2011 06:26
Last Modified:	25 Mar 2011 06:26
URI:	http://eprints.iisc.ernet.in/id/eprint/36237

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