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Er-Al-Co块体非晶合金的磁热效应
  • 期刊名称：科学通报，56(2011)：No23:2812-2828
  • 时间：0
  • 分类：TG139.8[金属学及工艺—合金;一般工业技术—材料科学与工程;金属学及工艺—金属学]
  • 作者机构：[1]北京科技大学新金属材料国家重点实验室,北京100083
  • 相关基金：国家重点基础研究发展计划（2007CB613901）和国家自然科学基金（50871013,51071018）资助项目
  • 相关项目：大磁致冷Gd基块体非晶合金形成机制
关键词： Er-Al-Co块体, 非晶合金, 磁热效应, 居里温度, 致冷能力
中文摘要：

利用水冷铜模铸造法制备了一系列不同成分的Er-Al-Co三元块体非晶合金,研究了该系列合金的非晶形成能力和磁热效应.结果表明,在磁场诱发下,该系列非晶合金在9K左右发生了顺磁-铁磁性二级磁性转变.由于具有较高的有效磁子数,该系列非晶合金具有优异的磁热效应,其中Er56Al24Co20非晶合金最大磁熵变和磁致冷能力分别为16.06Jkg-1K-1和465.7Jkg-1,是氢液化区有竞争力的磁致冷候选材料.

同期刊论文项目
大磁致冷Gd基块体非晶合金形成机制
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