Oxidation behavior of microwave absorbing SiCf/Si3N4 composites by incorporating self-healing phase

被引：5
作者：
Hao, Haohui [1 ]
Fan, Xiaomeng [1 ]
Wang, Xinlei [1 ]
Dang, Xiaolin [1 ]
Ye, Fang [1 ]
Xue, Jimei [1 ]
机构：
[1] Northwestern Polytech Univ, Sci & Technol Thermostructural Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 219卷
基金：
中国国家自然科学基金;
关键词：
Ceramic matrix composites; Electromagnetic absorption properties; Oxidation resistance; Self-healing phase; HIGH-TEMPERATURE OXIDATION; CERAMIC-MATRIX COMPOSITES; MECHANICAL-PROPERTIES; SILICON-NITRIDE; BORON-NITRIDE; INTERPHASE; DESIGN;
D O I：
10.1016/j.corsci.2023.111259
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, two types self-healing phases, SiBCN and SiB6, with low complex permittivity were introduced into SiCf/Si3N4 composite to improve the oxidation resistance. The oxidation behavior of composites depends on the cracking degree and crack-healing ability of the matrix. With the incorporation of SiBCN and SiB6, a large amount of glass phase can be generated, and the cracks can be better filled even the serious matrix crack. After the oxidation of 1200 celcius, the residual strength of SiCf/Si3N4 composite incorporating SiBCN and SiB6 can reach 227 MPa, while that of SiCf/Si3N4 was as low as 120 MPa.
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页数：11
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