ZrB2-SiC as a protective coating for C/SiC composites: Effect of high temperature oxidation on thermal shock property and protection mechanism

被引：21
|
作者：
Yang, Xiang [1 ]
Feng, Cao [1 ]
Qing, Wang [1 ]
机构：
[1] Natl Univ Def Technol, Sci & Technol Adv Ceram Fibers & Composites Lab, Changsha 410073, Hunan, Peoples R China
来源：
JOURNAL OF ASIAN CERAMIC SOCIETIES | 2016年 / 4卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Ceramic-matrix composites (CMCs); Corrosion; Fracture; Mechanical properties; High-temperature properties; CERAMIC COMPOSITES; MATRIX COMPOSITES; BEHAVIOR; INFILTRATION; FIBER; POLYCARBOSILANE;
D O I：
10.1016/j.jascer.2016.02.001
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：
ZrB2-SiC coating was prepared on C/SiC composites surface by slurry method, and then the thermal fatigue behavior of ZrB2-SiC coated C/SiC composites was studied. The composition of the coating layers was characterized by XRD, SEM and EDS. With the thickness was 200 tun, the coating was ZrB2 and SiC. During thermal cycle between 1773 K in air and 373 K in boiling water, the weight of the ZrB2-SiC coated composites decreased lightly. The decrease of the flexural strength during the thermal cycle was primarily due to the debonding of the fiber-matrix interfaces and the oxidation of the coated samples. Compared with the uncoated C/SiC composites, the coating played an important role in enhancing the resistance to the thermal shock. (C) 2016 The Ceramic Society of Japan and the Korean Ceramic Society. Production and hosting by Elsevier B.V.
引用
收藏
页码：159 / 163
页数：5
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