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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, Naikun; Zhang, Yang; Zhao, Xinguo; Guo, Jie; Cheng, Juan; Huang, Jiaohong; Zhang, Zhidong
2020-02-01
Source PublicationJOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume495
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.
DOI10.1016/j.jmmm.2019.165889
WOS IDWOS:000492698500031
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/83162
Collection中国科学院金属研究所
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.
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.
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).
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