Mechanical properties of hot-pressed Al2O3/SiC composites

被引：61
|
作者：
Shi, X. L. [1 ]
Xu, F. M. [1 ]
Zhang, Z. J. [1 ]
Dong, Y. L. [1 ]
Tan, Y. [1 ]
Wang, L. [1 ]
Yang, J. M. [2 ]
机构：
[1] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China
[2] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 18-19期
关键词：
Al2O3/SiC composites; Flexural strength; Fracture toughness; MICROSTRUCTURE; RESISTANCE; BEHAVIOR;
D O I：
10.1016/j.msea.2010.03.035
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Al2O3/SiC composites were prepared by hot pressing with micrometer Al2O3 powders and SiC powders as raw materials. The mechanical properties, including flexural strength, hardness, and fracture toughness were studied. The experimental results showed that flexural strength was enhanced with the density increasing and grain refining. 615 MPa, the highest flexural strength was obtained in 20 wt.%SiC composite sintered at 1735 degrees C. The fracture toughness increased at first then decreased with SiC content variation. 7.6 MPa m(1/2) of the highest fracture toughness was obtained in the composite containing 5 wt.%SiC sintered at 1635 degrees C. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：4646 / 4649
页数：4
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