Creep Deformation in MgO-Saturated Large-Grain-Size Al2O3

Samples of 65 μm‐grain‐size AL2O3 containing 0.05 wt% Mg and 40 μm‐grain‐size AL2O3 containing 0.13 wt% Mg, both MgO‐saturated, undergo compressive deformation in the range 1580° to 1800°C with results interpreted as diffusional creep rate‐limited by grain‐boundary diffusion with the Coble boundary‐...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1971-07, Vol.54 (7), p.339-341
Main Authors: MOCELLIN, ALAIN, KINGERY, W. D.
Format: Article
Language:English
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Summary:Samples of 65 μm‐grain‐size AL2O3 containing 0.05 wt% Mg and 40 μm‐grain‐size AL2O3 containing 0.13 wt% Mg, both MgO‐saturated, undergo compressive deformation in the range 1580° to 1800°C with results interpreted as diffusional creep rate‐limited by grain‐boundary diffusion with the Coble boundary‐diffusion model giving A lower deformation rate for an unsaturated composition indicates that MgO additions enhance grain‐boundary diffusion.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1971.tb12309.x