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Microstructural and mechanical evolution of SiCf/SiC composites in wet oxygen atmosphere above 1000 degrees C

文献类型：期刊论文

作者Guo, Feiyu1,2,3; Chen, Xiaowu2,3; Cheng, Guofeng4; Wu, Huiyang4; Zhou, Haijun2,3; Wang, Hongda2,3; Zhang, Xiangyu2,3; Yang, Jinshan2,3; Dong, Shaoming2,3
刊名CERAMICS INTERNATIONAL
出版日期2022-03-15
卷号48期号:6页码:8473-8480
关键词Wet-oxygen SiCf/SiC Residual stress Bending strength Raman spectra
ISSN号0272-8842
DOI10.1016/j.ceramint.2021.12.057
通讯作者Chen, Xiaowu(xwchen@mail.sic.ac.cn) ; Dong, Shaoming(smdong@mail.sic.ac.cn)
英文摘要As thermal-structural materials used in gas turbine hot sections, continuous silicon carbide fiber reinforced silicon carbide matrix (SiCf/SiC) composites serve under high temperature gas steam corrosion. Therefore the long-term durability of the composites is strongly dependent on the microstructural and mechanical stability under the corrosion. Here, the microstructural and mechanical evolution of SiCf/SiC were investigated in a simulated steam environment (22 vol% H2O + 78 vol% O-2, 1100-1300 degrees C). The results indicate that the temperature plays a major role in the corrosion of the composites. As the temperature rises up to 1200 degrees C, the fiber/matrix interphase (boron nitride) is completely dissipated due to oxidation. Meanwhile, a dense SiO2 scale forms on the composite surface and cristobalite phase tends to precipitate with the increase of temperature. The dissipation of interphase can lead to significant mechanical degradation on the composites. Furthermore, the degradation mechanism was also proposed in terms of stress distribution and fracture morphology. This study can offer new insight for understanding the wet-oxygen corrosion of SiCf/SiC and thus constructing SiCf/SiC with high stability in gas steam.
WOS关键词RESIDUAL-STRESS ; QUANTITATIVE-ANALYSIS ; RAMAN-SPECTROSCOPY ; ZINCBLENDE-TYPE ; OXIDATION ; SILICA ; DEVITRIFICATION ; GRAPHITE ; BEHAVIOR ; MATRIX
资助项目National Natural Science Foundation of China[51902328] ; National Natural Science Foundation of China[51802329] ; Science and Technology Commission of Shanghai Municipality[19ZR1464700] ; Project of Shanghai Science and Technology Innovation Action Plan[21511103200] ; Chinese Academy of Sciences[QYZDY-SSW-JSC031]
WOS研究方向Materials Science
语种英语
WOS记录号WOS:000760350000004
出版者ELSEVIER SCI LTD
源URL[http://119.78.100.183/handle/2S10ELR8/300221]  
专题中国科学院上海药物研究所
通讯作者Chen, Xiaowu; Dong, Shaoming
作者单位1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
3.Chinese Acad Sci, Shanghai Inst Ceram, Struct Ceram & Composites Engn Res Ctr, Shanghai 200050, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Ceram, Anal & Testing Ctr Inorgan Mat, Shanghai 200050, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Feiyu,Chen, Xiaowu,Cheng, Guofeng,et al. Microstructural and mechanical evolution of SiCf/SiC composites in wet oxygen atmosphere above 1000 degrees C[J]. CERAMICS INTERNATIONAL,2022,48(6):8473-8480.
APA Guo, Feiyu.,Chen, Xiaowu.,Cheng, Guofeng.,Wu, Huiyang.,Zhou, Haijun.,...&Dong, Shaoming.(2022).Microstructural and mechanical evolution of SiCf/SiC composites in wet oxygen atmosphere above 1000 degrees C.CERAMICS INTERNATIONAL,48(6),8473-8480.
MLA Guo, Feiyu,et al."Microstructural and mechanical evolution of SiCf/SiC composites in wet oxygen atmosphere above 1000 degrees C".CERAMICS INTERNATIONAL 48.6(2022):8473-8480.

入库方式： OAI收割

来源：上海药物研究所

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