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Fe_(25)Co_(25)Ni_(25)Cr_5P_(10)B_(10)高熵块体非晶态合金磁热效应的研究
Authors
刘丛
吴克楠
+3 more
孙言飞
李强
霍军涛
Publication date
30 May 2019
Publisher
Abstract
利用Fluxing提纯处理和J-Quenching技术相结合的方法成功制备了最大尺寸为1.2 mm的Fe_(25)Co_(25)-Ni_(25)Cr_5P_(10)B_(10)高熵块体非晶态合金,并对它的磁热性能进行的表征和研究,以探讨高熵效应对非晶态合金磁热性能的影响。目前的高熵块体非晶态合金的居里温度为572 K。在外加磁场为1.5和5 T时,它的最大等温磁熵变和制冷能力的值分别为0.66 J/(kg·K),42.9 J/kg和1.88 J/kg,136.1 J/(kg·K)。与其它非晶态合金磁热性能的对比显示,高熵效应对非晶态合金磁熵变似乎并没有明显影响,但高熵非晶态合金磁熵变随温度变化曲线显示了较大的半高宽温度区间
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Last time updated on 27/12/2019