Oxidation resistance of SiCf/SiC composites with a PyC/SiC multilayer interface at 500 °C to 1100°C

被引：50

作者：

Wang, Lian-Yi ^{[1
]}

Luo, Rui-Ying ^{[1
,2
]}

Cui, Guang-Yuan ^{[1
]}

Chen, Zhao-Feng ^{[3
]}

机构：

[1] Beihang Univ, Sch Phys, Beijing 100191, Peoples R China

[2] Beihang Univ, Res Inst Frontier Sci, Beijing 100191, Peoples R China

[3] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China

来源：

CORROSION SCIENCE | 2020年 / 167卷

基金：

中国国家自然科学基金;

关键词：

SiCf/SiC composite; PyC/SiC multilayer interface; Mechanical properties; Oxidation behavior; Self-healing characteristics; CERAMIC-MATRIX COMPOSITES; MECHANICAL-PROPERTIES; SIC/SIC COMPOSITES; SIC-FIBER; NEUTRON-IRRADIATION; COATING THICKNESS; CARBON INTERFACE; INTERPHASE; MINICOMPOSITES; KINETICS;

D O I：

10.1016/j.corsci.2020.108522

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

SiC fiber-reinforced SiC ceramic matrix composites with a novel PyC/SiC multilayer interface were oxidized at 500 degrees C-1100 degrees C for more than 400 h. The oxidation resistance of the composites was evaluated by micro-structural and mechanical evolution. Results showed that the PyC layer of composites was completely consumed after oxidation at 500 degrees C and 700 degrees C, thereby resulting in significant mechanical-property degradation. By contrast, 97 % and 101 % strength remained after oxidation at 900 degrees C and 1100 degrees C, respectively. The transformation was associated with the self-healing characteristics of the composites beyond 900 degrees C.

引用

页数：10

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