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Diffusion creep in oxide ceramics

Chokshi, Atul H (2002) Diffusion creep in oxide ceramics. In: Journal of the European Ceramic Society, 22 (14-15). pp. 2469-2478.

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Official URL: http://dx.doi.org/10.1016/S0955-2219(02)00105-X

Abstract

Although the models for diffusion creep were developed over 50 years ago, recently there has been considerable debate in the literature regarding the experimental validity of the models. This report summarizes recent theoretical developments in diffusion creep, with specific emphasis on ceramics. Concomitant microstructural changes during high temperature deformation, such as grain growth and cavitation, frequently interfere with the identification of the rate controlling process. Recent careful experiments coupled with appropriate microstructural characterization will be reviewed in structural oxide ceramics such as alumina and tetragonal zirconia; it will be demonstrated that these oxides deform by diffusion creep. Detailed analysis of the data in tetragonal zirconia will also be utilized to demonstrate the significance of diffusion creep in superplastic ceramics.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Diffusion creep;Grain boundary sliding;Grain growth;Grain boundary diffusion;Superplasticity
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 27 Jun 2007
Last Modified: 16 Jan 2012 10:31
URI: http://eprints.iisc.ernet.in/id/eprint/11253

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