ZrB2-SiC laminated ceramic composites

被引：35
|
作者：
Lu, Zhihui [1 ,2 ]
Jiang, Dongliang [1 ]
Zhang, Jingxian [1 ]
Lin, Qingling [1 ]
Huang, Zhengren [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2012年 / 32卷 / 07期
基金：
中国国家自然科学基金;
关键词：
ZrB2-SiC; Mechanical properties; Laminated ceramic composites; DIBORIDE-SILICON CARBIDE; HIGH TEMPERATURE CERAMICS; MECHANICAL-PROPERTIES; ZIRCONIUM; OXIDATION; MICROSTRUCTURE;
D O I：
10.1016/j.jeurceramsoc.2011.04.020
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：
The oxidation behavior for ZrB2-20 vol% SiC (ZS20) and ZrB2-30 vol% SiC (ZS30) ceramics at 1500 degrees C was evaluated by weight gain measurements and cross-sectional microstructure analysis. Based on the oxidation results, laminated ZrB2-30 vol% SiC (ZS30)/ZrB2-25 vol% SiC (ZS25)/ZrB2-30 vol% SiC (ZS30) symmetric structure with ZS30 as the outer layer were prepared. The influence of thermal residual stress and the layer thickness ratio of outer and inner layer on the mechanical properties of ZS30/ZS25/ZS30 composites were studied. It was found that higher surface compressive stress resulted in higher flexural strength. The fracture toughness of ZS30/ZS25/ZS30 laminates was found to reach to 10.73 MPa m(1/2) at the layer thickness ratio of 0.5, which was almost 2 times that of ZS30 monolithic ceramics. (C) 2011 Elsevier Ltd. All rights reserved.
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页码：1435 / 1439
页数：5
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