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高能球磨Gd5Si1.8Ge1.8Si0．4合金的磁性能及相组成
  • ISSN号：1001-9731
  • 期刊名称：《功能材料》
  • 时间：0
  • 分类：TB64[一般工业技术—制冷工程] TM273[电气工程—电工理论与新技术;一般工业技术—材料科学与工程]
  • 作者机构：[1]四川大学材料科学与工程学院,四川成都610064
  • 相关基金：国家高技术研究发展计划（863计划）资助项目（2007AA032440）;国家自然科学基金重点基金资助项目（50731007）
作者： 唐永柏[1], 陈云贵[1], 张铁邦[1], 涂铭旌[1]
关键词： 磁热材料, 高能球磨, 磁性能, 相组成, Gd5Si1.8Ge1.8Si0.4合金, magnetocaloric effect material, high-energy bali mill, magnetic properties, phase formation, Gd5Si1.8 Ge1.8 Si0.4 alloy
中文摘要：

采用电弧熔炼的方法制备了具有一级磁晶相变Gd5Si1.8Ge1.8Si0.4母合金，然后在不同时间条件下对其进行高能球磨，并研究球磨时间对该磁热合金的磁性能及相组成的影响。粉末XRD结果显示球磨没有改变Gd5Si2Ge2相，但拓宽了相应的布拉格衍射峰，这表明球磨后的合金的晶粒尺寸较小。另外，球磨后的合金中形成了一些非晶相。随着晶粒尺寸和磁畴的减小，与母合金相比，希望其滞后现象减小。

英文摘要：

The master Gd5Si1.8Ge1.8Si0.4 alloy with first order magnetic-crystallographic transition （FOMT） was prepared by the arc-meh method. Subsequently, the alloy was high-energy ball milled for different time. The effect of milling time on the magnetic properties and phase formation of the MCE alloy was investigated. According to powder XRD results, the ball milling technique does not change the Gd5 Si2 Ge2-type phase but broaden the corresponding Bragg reflection which implies the smaller crystalline size of milled alloys. In addition, some non-crystalline phase is formed in each milled alloy. With the decrease of the crystalline size and magnetic domain, the hysteresis of the alloy is expected to reduce compared with that of the master alloy.

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期刊信息
  • 《功能材料》
  • 北大核心期刊（2011版）
  • 主管单位:重庆材料研究院
  • 主办单位:重庆材料研究院
  • 主编：黄伯云
  • 地址：重庆北碚区蔡家工业园嘉德大道8号
  • 邮编：400707
  • 邮箱：gnclwb@126.com
  • 电话：023-68264739
  • 国际标准刊号：ISSN：1001-9731
  • 国内统一刊号：ISSN：50-1099/TH
  • 邮发代号:78-6
  • 获奖情况:
  • 2008、2011年连续获中国精品科技期刊,2010获重庆市双十佳期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:30166