Self-healing ZrB2-SiO2 oxidation resistance coating for SiC coated carbon/carbon composites

被引：74
作者：
Ouyang Haibo [1 ]
Li Cuiyan [1 ]
Huang Jianfeng [1 ]
Cao Liyun [1 ]
Fei Jie [1 ]
Lu Jing [1 ]
Xu Zhanwei [1 ]
机构：
[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Shaanxi, Peoples R China
来源：
CORROSION SCIENCE | 2016年 / 110卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Ceramic matrix composites; High temperature corrosion; Oxidation; DIBORIDE-SILICON CARBIDE; HIGH TEMPERATURE CERAMICS; ZIRCONIUM; BEHAVIOR; PROTECTION; OXYGEN; AIR;
D O I：
10.1016/j.corsci.2016.04.040
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A ZrB2-SiO2 coating was prepared on the SiC coated carbon/carbon composites by infiltrating silica sol into a porous ZrB2 layer. The ZrB2-SiO2 coating protected the composites from oxidation for 330 h at 1500 degrees C with a weight loss of 158 g/m(2). The formation of ZrO2 and ZrSiO4 from ZrB2 expanded the volume of solid phase, generating compressive stress in the coating at high-temperature oxidations. The phase transformation of ZrO2 provided the compressive stress in the coating during cooling. These compressive stresses restrained the formation of cracks and improved the oxidation protection of the coating. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：265 / 272
页数：8
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