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Exudation of Silicate Liquid from Polycrystalline Alumina

Published online by Cambridge University Press:  21 March 2011

N. Ravishankar ,
Jeffrey K. Farrer  and
C. Barry Carter
N. Ravishankar
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota421 Washington Ave SE, Minneapolis, MN 55455-0132
Jeffrey K. Farrer
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota421 Washington Ave SE, Minneapolis, MN 55455-0132
C. Barry Carter
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota421 Washington Ave SE, Minneapolis, MN 55455-0132
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Abstract

The presence of a liquid film at grain boundaries affects the mechanical properties of the material. One of the ways to eliminate the liquid film is to exude it from the grain boundaries to the free surface of the material. The present paper presents results on the exudation of a liquid silicate from grain boundaries in polycrystalline alumina. The results are compared to exudation behavior from bicrystals of alumina. This approach is very useful in understanding the mechanism of the exudation process.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 654: Symposia AA – Structure-Property Relationships of Oxide Surfaces & Interfaces , 2000 , AA5.8.1
Copyright
Copyright © Materials Research Society 2001

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