Synthesis, crystal structure and properties of YB<sub>2</sub>C<sub>2</sub>

doi:10.1080/21870764.2024.2350830

IMR OpenIR

	Synthesis, crystal structure and properties of YB₂C₂
	Li, Yueming 1; Ji, Depeng 2; Bao, Yiwang 3; Chen, Jixin 4; Zhang, Hui 5,6,8; Zhao, Guorui 2,7
通讯作者	Zhang, Hui(huizhang2023@scut.edu.cn) ; Zhao, Guorui(grzhao11s@alum.imr.ac.cn)
	2024-05-10
发表期刊	JOURNAL OF ASIAN CERAMIC SOCIETIES
ISSN	2187-0764
页码	11
摘要	YB2C2 is a novel ultra-high temperature ceramic material with high damage tolerance. In this work, the synthesis mechanism, crystal structure, electronic structure, elastic properties and thermal shock resistance of YB2C2 were systematically investigated through experiments and calculations. It was determined by differential scanning calorimetry with the heating rate of 10 degrees C/min that YB2C2 was formed by the reaction of YB2C and C at about 1202 degrees C, and became the main phase at 1450 degrees C. The space group of YB2C2 was determined to be P4/mbm by X-ray diffraction, transmission electron microscopy, Rietveld refinement and first-principles calculations for the first time. The lattice constants are a = b = 0.5351 nm and c = 0.3561 nm. The atom positions are as follows: Y is located at 2a (0, 0, 0), B is located 4 h (0.133, 0.633, 0.5) and C is located at 4 h (0.662, 0.162, 0.5). The chemical bonding of YB2C2 displayed sharp anisotropy, with strong B-C bond within the B2C2 nets, and weak Y-B/Y-C bond between Y atom layers and B2C2 nets. Additionally, YB2C2 exhibited abnormal thermal shock resistance when the thermal shock temperature exceeded 800 degrees C, with the residual flexural strength at 1300 degrees C being more than 70% of the strength at room temperature.
关键词	YB2C2 synthesis mechanism crystal structure properties
资助者	Guangdong Major Project of Basic and Applied Basic Research ; National Natural Science Foundation of China ; Guangdong Basic and Applied Basic Research Foundation ; Dongguan Sci-tech Commissioner Program ; SSL Sci-tech Commissioner Program ; Start-up Funding support from Songshan Lake Materials Laboratory ; National Key Research and Development Program of China
DOI	10.1080/21870764.2024.2350830
收录类别	SCI
语种	英语
资助项目	Guangdong Major Project of Basic and Applied Basic Research[2021B0301030002] ; National Natural Science Foundation of China[52101091] ; National Natural Science Foundation of China[52032011] ; Guangdong Basic and Applied Basic Research Foundation[2021B1515140061] ; Dongguan Sci-tech Commissioner Program[20221800500592] ; SSL Sci-tech Commissioner Program[20234374-01KCJ-G] ; Start-up Funding support from Songshan Lake Materials Laboratory[Y2D1041C711] ; National Key Research and Development Program of China[2022YFA1403500] ; National Key Research and Development Program of China[2022YFC2403702]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:001218343100001
出版者	TAYLOR & FRANCIS LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/186100
专题	中国科学院金属研究所
通讯作者	Zhang, Hui; Zhao, Guorui
作者单位	1.Dongguan Univ Technol, Sch Mat Sci & Engn, Dongguan, Peoples R China 2.Songshan Lake Mat Lab, Dept Two Dimens Mat, Dongguan, Peoples R China 3.China Bldg Mat Acad, State Key Lab Green Bldg Mat, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 5.South China Univ Technol, Electron Microscopy Ctr, Guangzhou, Peoples R China 6.South China Univ Technol, Sch Emergent Soft Matter, Guangzhou, Peoples R China 7.Songshan Lake Mat Lab, A1 Bldg, Dongguan 523808, Peoples R China 8.South China Univ Technol, Electron Microscopy Ctr, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Li, Yueming,Ji, Depeng,Bao, Yiwang,et al. Synthesis, crystal structure and properties of YB₂C₂[J]. JOURNAL OF ASIAN CERAMIC SOCIETIES,2024:11.
APA	Li, Yueming,Ji, Depeng,Bao, Yiwang,Chen, Jixin,Zhang, Hui,&Zhao, Guorui.(2024).Synthesis, crystal structure and properties of YB₂C₂.JOURNAL OF ASIAN CERAMIC SOCIETIES,11.
MLA	Li, Yueming,et al."Synthesis, crystal structure and properties of YB₂C₂".JOURNAL OF ASIAN CERAMIC SOCIETIES (2024):11.