| 复合粘结La0.8Ce0.2Fe11.7- x Mn x Si1.3H1.8 磁工质的磁性能 |
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| 引用本文： | 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. |
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| 作者姓名： | 程娟 刘翠兰 张光睿 张英德 金培育 黄焦宏 |
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| 作者单位： | 包头稀土研究院,包头稀土研究院,包头稀土研究院,包头稀土研究院,包头稀土研究院,包头稀土研究院 |
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| 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) |
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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。
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| 关 键 词： | 磁性材料 磁热效应 相对制冷能力 稀土 |
| 收稿时间： | 2021/7/23 0:00:00 |
| 修稿时间： | 2021/11/4 0:00:00 |
Magnetic Properties of Mix-Bonded La0.8Ce0.2Fe11.7- x Mn x-Si1.3H1.8 Magnetic Refrigerants |
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| Cheng Juan,Liu Cuilan,Zhang Guangrui,Zhang Yingde,Jin Peiyu and 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. |
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| Authors: | Cheng Juan Liu Cuilan Zhang Guangrui Zhang Yingde Jin Peiyu and Huang Jiaohong |
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| Affiliation: | State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths |
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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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| Keywords: | magnetic materials magnetocaloric effect relative cooling power rare earths |
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