...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Microstructure and improved magnetocaloric properties: LaFeSi/LaAl magnets prepared by spark plasma sintering technique
【24h】

Microstructure and improved magnetocaloric properties: LaFeSi/LaAl magnets prepared by spark plasma sintering technique

机译：微观结构和改进的磁热性能：通过火花等离子体烧结技术制备的Lafesi / LAAL磁铁

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Bulk LaFeSi magnets with the addition of LaAl alloy showing excellent performance were prepared by the spark plasma sintering (SPS) technique. The effects of heat treatment and various amounts of LaAl on the microstructure and magnetocaloric properties were investigated in details. It was found that appropriate amounts of LaAl can promote the peritectic reaction, and LaFeSi magnets with a high 1:13 phase amount can be obtained. Due to the unfavorable effects of Al in the peritectic reaction, excess addition of LaAl alloy was not beneficial to the formation of the 1:13 phase. The addition of 5 wt.% LaAl was most favorable to the formation of the 1:13 phase. Furthermore, heat treatment had important effects on the formation of the 1:13 phase and magnetocaloric performance. For SPSed LaFeSi magnets with 5 wt.% LaAl, the maximum values of magnetic entropy change (-Delta S-M)(max) and refrigerating capacity (RC) are 18.07 J. kg(-1). K-1 and 327.55 J. kg(-1) under the field changes of 0-5 L, respectively. The variation of Curie temperature (T-C) depended on the joint effects from the antiferromagnetic interaction between Fe-Al atoms and the ferromagnetic interaction between Fe-Fe atoms.
机译：通过喷射等离子体烧结（SPS）技术制备了具有展示优异性能的LAAL合金的散装Lafesi磁体。详细研究了热处理和各种量的LAAL对微观结构和磁热性能的影响。发现适量的Laal可以促进包晶反应，并且可以获得具有高1:13相量的Lafesi磁体。由于Al在包晶反应中的不利影响，对1:13相的形成没有有利于形成。加入5重量％。％Laal最有利于1:13期的形成。此外，热处理对1:13相和磁热性能的形成具有重要作用。对于具有5wt的Spsed Lafesi磁体，％LAAL，磁熵变化（-Delta S-M）（MAX）和制冷容量（RC）的最大值为18.07J.KG（-1）。 K-1和327.55 J.KG（-1）分别在0-5升的变化下。居里温度（T-C）的变化取决于Fe-Al原子与Fe-Fe原子之间的铁磁相互作用的关节效应。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号