Mechanical properties of Si3N4/BN fibrous monolithic ceramics at elevated-temperature |
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| Authors: | Shuqin Li Yong Huang Changan Wang Qingfeng Zan Cuiwei Li |
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| Affiliation: | (1) State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, People's Republic of China |
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| Abstract: | The mechanical properties at high temperature of Si3N4/BN fibrous monolithic ceramics were tested. The flexural strength of SiC whisker reinforced Si3N4/BN fibrous monolithic ceramics from 25°C to 1200°C were investigated. The strength degraded slowly from 1000°C to 1200°C which was different to Si3N4 monolithic ceramics. The creep behaviors of the material at different temperatures were characterized. Si3N4/BN fibrous monolithic ceramics possess high creep resistance. The chemical composition and microstructure of the composites were analyzed by XRD and SEM. |
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