High-temperature mechanical behavior of Al2O3/graphite composites

被引：4

作者：

Zapata-Solvas, Eugenio ^{[1
]}

Poyato, Rosalia ^{[1
]}

Gomez-Garcia, Diego ^{[1
]}

Dominguez-Rodriguez, Arturo ^{[1
]}

Padture, Nitin P. ^{[2
]}

机构：

[1] Univ Seville, Dept Fis Mat Condensada, E-41080 Seville, Spain

[2] Ohio State Univ, Ctr Emergent Mat, Dept Mat Sci & Engn, Columbus, OH 43210 USA

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2009年 / 29卷 / 15期

关键词：

Composites; Ceramics; Graphite; Creep; WALL CARBON NANOTUBES; HIGH-PURITY ALUMINA; BOUNDARY DIFFUSION; TENSILE DUCTILITY; CREEP RESISTANCE; CERAMICS; SUPERPLASTICITY; ALPHA-AL2O3; ZIRCONIA; DEFORMATION;

D O I：

10.1016/j.jeurceramsoc.2009.06.002

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Uniaxial compressive creep behaviour of spark-plasma-sintered Al2O3/graphite particulate composites has been studied at temperature between 1250 and 1350 degrees 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. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：3205 / 3209

页数：5

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