Large negative thermal expansion promoted by microstructure in hexagonal Fe1-xCoxS

doi:10.1016/j.jallcom.2021.158616

	Large negative thermal expansion promoted by microstructure in hexagonal Fe1-xCoxS
	Wang, X. L.1,2; Tong, P.1,2; Lin, J. C.1; Zhang, X. K.1,2; Yang, C.1; Wang, Z. C.1,2; Wang, M.1; Wu, Y.1; Zhang, L.3; Tong, W.3
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2021-05-05
卷号	862
关键词	FeS alloy Negative thermal expansion Structure phase transition Microstructure
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2021.158616
通讯作者	Tong, P.(tongpeng@issp.ac.cn) ; Lin, J. C.(jclin@issp.ac.cn)
英文摘要	Materials showing negative thermal expansion (NTE) can be used as thermal expansion compensators. Here, we report the NTE behavior in hexagonal Fe1-xCoxS (0 <= x <= 0.15) alloys. NTE appears near room temperature when x is increased to 0.09, shifts to lower temperature as x increases, and finally disappears for x >= 0.15. For x = 0.10, the inherent volumetric coefficient of thermal expansion (alpha(v)) measured by diffraction method is about - 29.8 ppm/K. However, the value obtained by dilatometric method is increased to - 97.2 ppm/K. The pores among the grains in polycrystalline sample are suggested to account for the extra NTE performance. The present study suggests that the NTE of the alloys with anisotropic lattice thermal expansion can be adjusted effectively by controlling the microstructure. (C) 2021 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[U1932127] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH015] ; Hefei Science Center CAS[2019HSC-UE008]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000624934000107
资助机构	National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Hefei Science Center CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/121104]
专题	中国科学院合肥物质科学研究院
通讯作者	Tong, P.; Lin, J. C.
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Magnet Field Lab, HFIPS, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Wang, X. L.,Tong, P.,Lin, J. C.,et al. Large negative thermal expansion promoted by microstructure in hexagonal Fe1-xCoxS[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,862.
APA	Wang, X. L..,Tong, P..,Lin, J. C..,Zhang, X. K..,Yang, C..,...&Sun, Y. P..(2021).Large negative thermal expansion promoted by microstructure in hexagonal Fe1-xCoxS.JOURNAL OF ALLOYS AND COMPOUNDS,862.
MLA	Wang, X. L.,et al."Large negative thermal expansion promoted by microstructure in hexagonal Fe1-xCoxS".JOURNAL OF ALLOYS AND COMPOUNDS 862(2021).