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Tunable strength of SiCf/beta-Yb2Si2O7 interface for different requirements in SiCf/SiC CMC: Inspiration from model composite investigation
Lv, Xirui1,2; Yue, Mengkun3,4; Yang, Wenfan1,2; Feng, Xue3,4; Li, Xiaoyan3,4; Wang, Yumin5; Wang, Jiemin1; Zhang, Jie1; Wang, Jingyang1
Corresponding AuthorZhang, Jie(jiezhang@imr.ac.cn) ; Wang, Jingyang(jywang@imr.ac.cn)
2021-03-20
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume67Pages:165-173
AbstractModel composites consisting of SiC fiber embedded in beta-Yb2Si2O7 matrix were processed by Spark Plasma Sintering method and the feasibility of tunable SiCf/Yb2Si2O7 interface in SiC-based CMCs were estimated. Weak and strengthened SiCf/Yb2Si2O7 interfaces were achieved by adjusting sintering temperatures. The indentation crack test and fiber push out experiments clearly demonstrated the different debonding mechanisms in the samples. Weak interfaces sintered at 1200 and 1250 degrees C exhibited crack deflection at interface in indentation test. Their low debond energy at the interface, which were comparable to those of PyC or BN, satisfied the well-recognized interfacial debond and crack deflection criteria for CMCs. The interface was strengthened by atomic bonding in model composite sintered at 1450 degrees C, leading to crack penetrating into SiC fiber and high debond energy. The strong interface may be promising in SiCf/SiC CMC to withstand higher combustion temperature, because Yb2Si2O7 will provide plastic deformation capacity, which would serve as weak interphase for crack deflection and energy dissipation. Therefore, it is possible to design the capability of SiCf/RE2/Si2O7 interface for different requirements by adjusting interfacial strength or debond energy to reach optimal mechanical fuse mechanism in SiCf/SiC CMC. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordSiCf/SiC composite Interphase Rare earth disilicate Tunable interface
Funding OrganizationNational Key R&D Program of China ; Natural Science Foundation of China ; CAS International Cooperation Key Program
DOI10.1016/j.jmst.2020.05.071
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFB0703201] ; Natural Science Foundation of China[51772302] ; CAS International Cooperation Key Program[174321KYSB20180008]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000611164200016
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159160
Collection中国科学院金属研究所
Corresponding AuthorZhang, Jie; Wang, Jingyang
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Tsinghua Univ, Dept Engn Mech, AML, Beijing 100084, Peoples R China
4.Tsinghua Univ, Ctr Mech & Mat, Beijing 100084, Peoples R China
5.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Lv, Xirui,Yue, Mengkun,Yang, Wenfan,et al. Tunable strength of SiCf/beta-Yb2Si2O7 interface for different requirements in SiCf/SiC CMC: Inspiration from model composite investigation[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,67:165-173.
APA Lv, Xirui.,Yue, Mengkun.,Yang, Wenfan.,Feng, Xue.,Li, Xiaoyan.,...&Wang, Jingyang.(2021).Tunable strength of SiCf/beta-Yb2Si2O7 interface for different requirements in SiCf/SiC CMC: Inspiration from model composite investigation.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,67,165-173.
MLA Lv, Xirui,et al."Tunable strength of SiCf/beta-Yb2Si2O7 interface for different requirements in SiCf/SiC CMC: Inspiration from model composite investigation".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 67(2021):165-173.
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