Theoretical investigation on structure, mechanical performance and oxidation resistance of the boron-doped PyC interphase in SiCf/ SiC composites

doi:10.1016/j.jeurceramsoc.2023.11.077

IMR OpenIR

	Theoretical investigation on structure, mechanical performance and oxidation resistance of the boron-doped PyC interphase in SiCf/ SiC composites
	Liu, Mei 1,2; Zhang, Siyan 1,2; Luo, Yixiu 1; Sun, Luchao 1; Wang, Jiemin 1; Wang, Jingyang 1
通讯作者	Wang, Jiemin(jieminwang@imr.ac.cn) ; Wang, Jingyang(jywang@imr.ac.cn)
	2024-05-01
发表期刊	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN	0955-2219
卷号	44 期号:5 页码:3074-3083
摘要	Pyrolytic carbon (PyC) is widely used as the interphase in SiCf/SiC composites because of the crack deflection capability originating from its weakly bonded layered structure. However, the poor oxidation resistance limits its application in SiCf/SiC. Boron doping can improve oxidation resistance due to the crack -healing effects of boron oxide. To explore the optimal boron doping content in PyC interphase, structure characters and mechanical properties of C128_ xBx (x = 8, 20, 32, 44, 64) were simulated by ab-initio molecular dynamics. Modeling results suggest a transition of C128_xBx from layered to amorphous accompanied by a change of its elasticity tensor from strongly anisotropic to nearly isotropic. The predicted optimal boron content is near 34 at%, at which the Bdoped PyC maintains a layered structure with a high crack deflection potential according to the Cook & Gordon model while having a high crack -healing capability with a large volume expansion factor.
关键词	Ceramic matrix composites (CMCs) Ab-initio molecular dynamics (AIMD) Pyrolytic carbon (PyC) Interphase
资助者	National Key R&D Program of China ; National Natural Science Foundation of China ; LiaoNing Revitalization Talents Program ; International Partnership Program of the Chinese Academy of Sciences
DOI	10.1016/j.jeurceramsoc.2023.11.077
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2022YFB3707700] ; National Natural Science Foundation of China[U21A2063] ; LiaoNing Revitalization Talents Program[XLYC2002018] ; International Partnership Program of the Chinese Academy of Sciences[172GJHZ2022094FN]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:001168180900001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/184419
专题	中国科学院金属研究所
通讯作者	Wang, Jiemin; Wang, Jingyang
作者单位	1.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
推荐引用方式 GB/T 7714	Liu, Mei,Zhang, Siyan,Luo, Yixiu,et al. Theoretical investigation on structure, mechanical performance and oxidation resistance of the boron-doped PyC interphase in SiCf/ SiC composites[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2024,44(5):3074-3083.
APA	Liu, Mei,Zhang, Siyan,Luo, Yixiu,Sun, Luchao,Wang, Jiemin,&Wang, Jingyang.(2024).Theoretical investigation on structure, mechanical performance and oxidation resistance of the boron-doped PyC interphase in SiCf/ SiC composites.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,44(5),3074-3083.
MLA	Liu, Mei,et al."Theoretical investigation on structure, mechanical performance and oxidation resistance of the boron-doped PyC interphase in SiCf/ SiC composites".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 44.5(2024):3074-3083.