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Microstructure, mechanical and magnetocaloric properties of bulk La0.9Ce0.1Fe11.7-xMnxSi1.3 hydrides prepared by high-hydrogen-pressure sintering
Sun, Naikun1; Zhang, Yang1; Zhao, Xinguo2; Guo, Jie1; Cheng, Juan3; Huang, Jiaohong3; Zhang, Zhidong2
Corresponding AuthorSun, Naikun(naikunsun@163.com) ; Zhao, Xinguo(xgzhao@imr.ac.cn)
2020-02-01
Source PublicationJOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN0304-8853
Volume495Pages:7
AbstractFully hydrogenated La0.9Ce0.1Fe11.7-xMnxSi1-3 bulk hydrides with Curie temperature T-C around room temperature were prepared by high-hydrogen-pressure sintering. High-resolution X-ray microtomography has been employed to analyze the morphology, size and distribution of the micropores in the sintered bulk sample. The analysis result shows that most of the micropores have the size of several micrometers with the porosity of 0.22%. A thin plate of La0.9Ce0.1Fe11.35Mn0.35Si1.3H2.0 exhibits a magnetic-entropy change Delta S-m of 7.5 J/kg K at 290 K and a hysteresis loss of 0.5 J/kg for a magnetic-field change from 0 to 2 T. As the sintering pressure increases from 40 to 50 MPa, more alpha-Fe (similar to 20 wt%) precipitates from the 1:13 phase, which causes a reduction of Delta S-m to 6.2 J/kg K for a field change from 0 to 2 T at 297 K and a remarkable enhancement of the compressive strength from 46 to 421 MPa.
KeywordHigh-pressure sintering Micropores Mechanical properties Magnetocaloric effect
Funding OrganizationNational Natural Science Foundation of China ; National Key R&D Plan of China (Materials genome project)
DOI10.1016/j.jmmm.2019.165889
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51571194] ; National Natural Science Foundation of China[51771197] ; National Key R&D Plan of China (Materials genome project)[2017YFB0702703]
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Condensed Matter
WOS IDWOS:000492698500031
PublisherELSEVIER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/136850
Collection中国科学院金属研究所
Corresponding AuthorSun, Naikun; Zhao, Xinguo
Affiliation1.Shenyang Ligong Univ, Sch Sci, Shenyang 110159, Liaoning, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
3.Baotou Res Inst Rare Earths, Baotou 014030, Peoples R China
Recommended Citation
GB/T 7714
Sun, Naikun,Zhang, Yang,Zhao, Xinguo,et al. Microstructure, mechanical and magnetocaloric properties of bulk La0.9Ce0.1Fe11.7-xMnxSi1.3 hydrides prepared by high-hydrogen-pressure sintering[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2020,495:7.
APA Sun, Naikun.,Zhang, Yang.,Zhao, Xinguo.,Guo, Jie.,Cheng, Juan.,...&Zhang, Zhidong.(2020).Microstructure, mechanical and magnetocaloric properties of bulk La0.9Ce0.1Fe11.7-xMnxSi1.3 hydrides prepared by high-hydrogen-pressure sintering.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,495,7.
MLA Sun, Naikun,et al."Microstructure, mechanical and magnetocaloric properties of bulk La0.9Ce0.1Fe11.7-xMnxSi1.3 hydrides prepared by high-hydrogen-pressure sintering".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 495(2020):7.
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