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The Surface Cracking Resistance of Al2O3-Modified SiCf/SiC-B4C Composites after Cyclic Oxidation in Wet Environment
Shan, Qingliang; Wang, Qinglei; Xue, Yudong; Hu, Jianbao; Yang, Jinshan; Zhou, Haijun; Zhu, Guangxiang; Dong, Shaoming
2019-09-01
Source PublicationADVANCED ENGINEERING MATERIALS
ISSN1438-1656
Volume21Issue:9
SubtypeArticle
AbstractAluminum oxide is introduced into SiCf/(SiC + B4C) composites to improve the surface cracking resistance after oxidizing at 1100 degrees C in O-2/H2O (40/60) atmosphere. Research on morphology observation of oxidized composites reveals that Al2O3 can lead to the formation of a dense and smooth oxidation layer, resulting in a relatively shallow oxygen penetration depth. In-depth studies on acoustic emission reveal that composites with Al2O3 can improve the surface cracking resistance after oxidizing at 1100 degrees C in O-2/H2O (40/60) atmosphere since the retention rates of sigma(min) (first acoustic emission [AE] stress) and sigma(onset) (AE onset stress) are significantly increased compared with virgin composites. Moreover, a small number of cumulative events and steep slope of strength-time curves at the initial stage further confirm the improvement of surface cracking resistance after oxidation.
Keywordacoustic emission composites cracking resistance
DOI10.1002/adem.201900458
Language英语
WOS Research AreaMaterials Science
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26913
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Shan, Qingliang,Wang, Qinglei,Xue, Yudong,et al. The Surface Cracking Resistance of Al2O3-Modified SiCf/SiC-B4C Composites after Cyclic Oxidation in Wet Environment[J]. ADVANCED ENGINEERING MATERIALS,2019,21(9).
APA Shan, Qingliang.,Wang, Qinglei.,Xue, Yudong.,Hu, Jianbao.,Yang, Jinshan.,...&Dong, Shaoming.(2019).The Surface Cracking Resistance of Al2O3-Modified SiCf/SiC-B4C Composites after Cyclic Oxidation in Wet Environment.ADVANCED ENGINEERING MATERIALS,21(9).
MLA Shan, Qingliang,et al."The Surface Cracking Resistance of Al2O3-Modified SiCf/SiC-B4C Composites after Cyclic Oxidation in Wet Environment".ADVANCED ENGINEERING MATERIALS 21.9(2019).
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