Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1477017 | Journal of the European Ceramic Society | 2009 | 5 Pages |
Abstract
Uniaxial compressive creep behaviour of spark-plasma-sintered Al2O3/graphite particulate composites has been studied at temperature between 1250 and 1350 °C. Values of stress exponent, n, ranging from 1 to 1.4 and, activation energy, Q, of 600 ± 40 kJ/mol have been determined. With 10 vol% graphite in the composite, the creep deformation of the composite is controlled by the fine-grained Al2O3 matrix, where Coble creep has been identified as the dominant creep mechanism.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Eugenio Zapata-Solvas, Rosalía Poyato, Diego Gómez-García, Arturo Domínguez-Rodríguez, Nitin P. Padture,