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复合粘结La0.8Ce0.2Fe11.7- x Mn x Si1.3H1.8 磁工质的磁性能
作者:
作者单位:

1.包头稀土研究院 白云鄂博稀土资源研究与综合利用国家重点实验室，内蒙古 包头 014030;2.沈阳理工大学 理学院，辽宁 沈阳 110159

中图分类号:

TB64

基金项目:

国家自然科学基金项目（面上项目，重点项目，重大项目）(52066001);内蒙古自然科学基金 (2021MS05016);北方稀土项目(BFXT-2021-D-0013)


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

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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    摘要:

    采用中频感应炉制备La0.8Ce0.2Fe11.7-xMnxSi1.3母合金并退火，将合金饱和氢化后破碎成粉末。通过环氧树脂粘结，将居里温度TC间隔为5 K的多种La0.8Ce0.2Fe11.7-xMnxSi1.3H1.8（x=0.23，0.26，0.29，0.32，质量分数，%）合金粉末进行混合粘结，提高合金的磁熵半峰宽。用VersaLab和绝热温变直接测量仪测试粘结样品的磁性能。结果表明，与单一成分粘结样品相比，混合粘结样品的最大等温磁熵变有所降低，磁熵半峰宽以及相对制冷能力有所提高。含4种成分的混合粘结样品的相对制冷能力可以达到139.2 J/kg。

    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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程娟,刘翠兰,张光睿,张英德,金培育,黄焦宏.复合粘结La0.8Ce0.2Fe11.7- x Mn x Si1.3H1.8 磁工质的磁性能[J].稀有金属材料与工程,2022,51(9):3153~3158.[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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  • 收稿日期:2021-07-23
  • 最后修改日期:2021-11-04
  • 录用日期:2021-11-10
  • 在线发布日期: 2022-09-30
  • 出版日期: 2022-09-27

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