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Magnetic Properties of Mix-Bonded La0.8Ce0.2Fe11.7- x Mn x-Si1.3H1.8 Magnetic Refrigerants
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Affiliation:

1.State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China;2.School of Science, Shenyang Ligong University, Shenyang 110159, China

Clc Number:

TB64

Fund Project:

National Natural Science Foundation of China (52066001); Natural Science Foundation of Inner Mongolia Autonomous Region (2021MS05016); Northern Rare Earth Project (BFXT-2021-D-0013)

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    Abstract:

    La0.8Ce0.2Fe11.7-xMnxSi1.3 master alloys were prepared by medium frequency induction furnace, then annealed, saturatedly hydrogenated, and finally crushed into powders. The multiple components of La0.8Ce0.2Fe11.7-xMnxSi1.3H1.8 (x=0.23, 0.26, 0.29, 0.32, wt%) powders with the Curie temperature (TC) interval of 5 K were mix-bonded by epoxy resin to extend the full width at half maximum of magnetic entropy of alloy. The magnetic properties of the mix-bonded specimens were measured by VersaLab and adiabatic temperature change direct test device. The maximal magnetic entropy change of the mix-bonded specimens is decreased, whereas the full width at half maximum of magnetic entropy and the relative cooling power are increased, compared with those of the single-component-bonded specimens. The maximal relative cooling power is 139.2 J/kg for the four-component-bonded specimen.

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[Cheng Juan, Liu Cuilan, Zhang Guangrui, Zhang Yingde, Jin Peiyu, Huang Jiaohong. Magnetic Properties of Mix-Bonded La0.8Ce0.2Fe11.7- x Mn x-Si1.3H1.8 Magnetic Refrigerants[J]. Rare Metal Materials and Engineering,2022,51(9):3153~3158.]
DOI:10.12442/j. issn.1002-185X.20210661

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History
  • Received:July 23,2021
  • Revised:November 04,2021
  • Adopted:November 10,2021
  • Online: September 30,2022
  • Published: September 27,2022