Mode I fracture toughness of SiC particle-dispersed ZrB2 matrix composite measured using DCDC specimen

被引：10
|
作者：
Kurihara, J. K. [1 ]
Tomimatsu, T. [1 ]
Liu, Y. F. [1 ]
Guo, S. Q. [2 ]
Kagawa, Y. [1 ,2 ]
机构：
[1] Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan
[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
来源：
CERAMICS INTERNATIONAL | 2010年 / 36卷 / 01期
关键词：
Mechanical Properties; Fracture; ZrB2; SiC particle; Composite; HIGH-TEMPERATURE CERAMICS; MECHANICAL-PROPERTIES; ZRB2-BASED COMPOSITES; PHYSICAL-PROPERTIES; MICROSTRUCTURE; DENSIFICATION; RESISTANCE; ZIRCONIUM; OXIDATION;
D O I：
10.1016/j.ceramint.2009.07.031
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：
Mode I fracture toughness of SiC particle-dispersed ZrB2 matrix composite has been measured using DCDC specimen. Compression test results of the DCDC specimen show that the fracture toughness of the composite is independent of crack length with an average toughness similar to 3.5 MPa root m. Optical microscope and SEM observations reveal a flat crack path and fracture surface with no significant toughening mechanisms in the composite either through grain boundary deflection or SiC particle introduction. Comparison with previous ZrB2 matrix composites, in addition to other short crack test methods, there is an agreement with the results between what this study has come upon with respect to previous work. (C) 2009 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：381 / 384
页数：4
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