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Microstructure, mechanical and magnetocaloric properties of bulk La0.9Ce0.1Fe11.7-xMnxSi1.3 hydrides prepared by high-hydrogen-pressure sintering

文献类型：期刊论文

作者Sun, Naikun2; Zhang, Yang2; Zhao, Xinguo1; Guo, Jie2; Cheng, Juan3; Huang, Jiaohong3; Zhang, Zhidong1
刊名JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
出版日期2020-02-01
卷号495页码:7
关键词High-pressure sintering Micropores Mechanical properties Magnetocaloric effect
ISSN号0304-8853
DOI10.1016/j.jmmm.2019.165889
通讯作者Sun, Naikun(naikunsun@163.com) ; Zhao, Xinguo(xgzhao@imr.ac.cn)
英文摘要Fully 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.
资助项目National 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研究方向Materials Science ; Physics
语种英语
WOS记录号WOS:000492698500031
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Key R&D Plan of China (Materials genome project)
源URL[http://ir.imr.ac.cn/handle/321006/136849]  
专题金属研究所_中国科学院金属研究所
通讯作者Sun, Naikun; Zhao, Xinguo
作者单位1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
2.Shenyang Ligong Univ, Sch Sci, Shenyang 110159, Liaoning, Peoples R China
3.Baotou Res Inst Rare Earths, Baotou 014030, Peoples R China
推荐引用方式
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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来源：金属研究所

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