A novel strategy to improve the corrosion resistance of SiCf/SiC composites in high-temperature combustion environments by cooperation of self-healing SiBCN and high-stability Yb2Si2O7

doi:10.1016/j.surfcoat.2024.131098

IMR OpenIR

	A novel strategy to improve the corrosion resistance of SiC_f/SiC composites in high-temperature combustion environments by cooperation of self-healing SiBCN and high-stability Yb₂Si₂O₇
	Liang, Bin 1; Ji, Suya 1,2; Pang, Shengyang 1; Hu, Chenglong 1; Zhao, Rida 1; Tang, Sufang 1
通讯作者	Tang, Sufang(sftang@imr.ac.cn)
	2024-08-15
发表期刊	SURFACE & COATINGS TECHNOLOGY
ISSN	0257-8972
卷号	489 页码:11
摘要	How to improve the resistance to water-oxygen-salt corrosion of SiCf/SiC composites is vital to their long-term service in the advanced aero-engines or gas turbines. SiCf/SiC-SiBCN-Yb2Si2O7 (SSY) self-healing composites were exposed to combustion environments at 1200-1350 degrees C for a long time up to 100 h. The dissolution of solid Yb2Si2O7 into low-viscosity glassy oxides derived mainly from oxidation of SiBCN leads to the formation of stable Yb2Si2O7-contianing multi-phase silicate which can inhibit the diffusion of corrosive media and alleviate corrosive damage of composites. After corrosion in H2O/O-2/Na2SO4 at 1200 degrees C and 1350 degree celsius, the strength retention rates of SSY are 96 % and 88 %, respectively, (6.4 +/- 0.9)% higher than those of SiCf/SiC-SiBCN (SS), due to the good cooperative protective effect of SiBCN-Yb2Si2O7. However, the insufficient dissolution of Yb2Si2O7 causes the formation of plenty of solid/liquid interfaces conductive to the diffusion of corrosive media in H2O/O-2 at 1200 degrees C and 1350 degrees C. As a result, the retention rates of flexural strengths of SSY are 100 % and 91 %, respectively, (2.5 +/- 0.5)% lower than those of SS.
关键词	Ceramic matrix composites SiCf/SiC SiBCN High temperature corrosion Yb2Si2O7 High temperature corrosion
资助者	Research Fund of Youth Innovation Promotion Association of CAS, China ; National Key Research and Development Program of China ; Natural Science Foundation of Liaoning Province
DOI	10.1016/j.surfcoat.2024.131098
收录类别	SCI
语种	英语
资助项目	Research Fund of Youth Innovation Promotion Association of CAS, China[2021190] ; National Key Research and Development Program of China[2021YFA1500804] ; Natural Science Foundation of Liaoning Province[2022-MS-003]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:001325485500001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/190499
专题	中国科学院金属研究所
通讯作者	Tang, Sufang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 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	Liang, Bin,Ji, Suya,Pang, Shengyang,et al. A novel strategy to improve the corrosion resistance of SiC_f/SiC composites in high-temperature combustion environments by cooperation of self-healing SiBCN and high-stability Yb₂Si₂O₇[J]. SURFACE & COATINGS TECHNOLOGY,2024,489:11.
APA	Liang, Bin,Ji, Suya,Pang, Shengyang,Hu, Chenglong,Zhao, Rida,&Tang, Sufang.(2024).A novel strategy to improve the corrosion resistance of SiC_f/SiC composites in high-temperature combustion environments by cooperation of self-healing SiBCN and high-stability Yb₂Si₂O₇.SURFACE & COATINGS TECHNOLOGY,489,11.
MLA	Liang, Bin,et al."A novel strategy to improve the corrosion resistance of SiC_f/SiC composites in high-temperature combustion environments by cooperation of self-healing SiBCN and high-stability Yb₂Si₂O₇".SURFACE & COATINGS TECHNOLOGY 489(2024):11.