MnxFe2-xP1-yGey化合物成分、结构、相变过程及性能关系的研究

来源 :第三届全国磁热效应材料和磁制冷技术学术研讨会 | 被引量 : 0次 | 上传用户：wszlzsjava

【摘要】

：

MnxFe2-xP1-yGey系列化合物是最具应用潜力的新型室温磁制冷材料之一,具有高磁熵、环保和使用温度范围大等磁制冷材料的主要优点.但其磁热滞后较大的缺点影响到实际应用,磁熵

【作者】

：

刘丹敏王少博张虎黄清镇岳明张久兴

【机构】

：

北京工业大学固体微结构与性能研究所,100124NISTCenterforNeutronResearch,NationalInstituteofStandardsandTechnology,Maryl

【出处】

：

第三届全国磁热效应材料和磁制冷技术学术研讨会

【发表日期】

：

2014年5期

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MnxFe2-xP1-yGey系列化合物是最具应用潜力的新型室温磁制冷材料之一,具有高磁熵、环保和使用温度范围大等磁制冷材料的主要优点.但其磁热滞后较大的缺点影响到实际应用,磁熵变等性能也存在继续提高的潜力.我们采用机械合金化和SPS技术制备了系列MnxFe2-xP1-yGey合金,针对Mn/Fe与P/Ge比、微量元素替代和掺杂、晶粒尺寸及制备工艺等影响材料重要性能的关键因素,开展了材料成分及其分布、微观结构、相变过程与性能关系的研究,并以此得到提高化合物重要磁热性能的途径和方法,同时对化合物磁热性能的表征方法进行了探讨.

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