Magnetocaloric effect of Fe25Co25Ni25Mo5P10B10 high-entropy bulk metallic glass
Magnetocaloric effect of Fe25Co25Ni25Mo5P10B10 high-entropy bulk metallic glass
复制标题
Fe25Co25Ni25Mo5P10B10高熵块体金属玻璃的磁热效应
DOI：
10.1016/j.jmmm.2019.165404
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发表时间：
2019
影响因子：
2.7
通讯作者：
Sun Yanfei
中科院分区：
文献类型：
--
作者：
Wu Kenan;Liu Cong;Li Qiang;Huo Juntao;Li Mingcan;Chang Chuntao;Sun Yanfei
本文采用助熔处理和J-淬火相结合的方法制备了最大直径为1.2mm的Fe_（25）Co_（25）Ni_（25）Mo_（55）P_（10）B_（10）高熵块体非晶合金（HE-BMG）。研究了Fe_（25）Co_（25）Ni_（25）Mo_（55）P_（10）B_（10）HE-BMG的磁热效应和“高熵效应”。本发明的Fe 25 Co25 Ni 25 Mo 5 P10 B10 HE-BMG的居里温度为560 K，磁熵变和制冷量的峰值在1.5 T的外加磁场下分别为0.80 J kg-1 K-1和135.4 J kg-1，在5 T的外加磁场下分别为1.88 J kg-1 K-1和310.2 J kg-1。与其他过渡金属基BMG相比，本发明的Fe 25 Co 25 Ni 25 Mo 5 P 10 B 10 HE-BMG没有表现出相对较大的磁熵变，但磁熵变曲线的半峰温度全宽更宽，因此具有更大的制冷容量。
In this work, Fe25Co25Ni25Mo5P10B10high-entropy bulk metallic glass (HE-BMG) with a maximum diameter of 1.2 mm is prepared by combining fluxing treatment and J-quenching technique. The magnetocaloric effect and the “high-entropy effect” on the magnetocaloric properties of the present Fe25Co25Ni25Mo5P10B10HE-BMG have been investigated. The Curie temperature of the present Fe25Co25Ni25Mo5P10B10HE-BMG is 560 K, the peak value of the magnetic entropy change and the refrigerant capacity are 0.80 J kg−1K−1and 135.4 J kg−1under the applied field of 1.5 T, 1.88 J kg−1K−1and 310.2 J kg−1under the applied field of 5 T, respectively. Compared with other transition metal-based BMGs, the present Fe25Co25Ni25Mo5P10B10HE-BMG does not exhibit a relatively larger magnetic entropy change but a much wider full width at half maximum temperature of the magnetic entropy change curve, thus a larger refrigerant capacity.