胡慧敏,侯雪玲,刘春雨,薛允,徐晖.Co元素及凝固速度对La-Fe-Si系NaZn13型相及磁性能影响[J].稀有金属材料与工程,2016,45(1):244~247.[huhuimin,houxueling,liuchunyu,xueyun,xuhui.Influence of Co and Freezing Rate on NaZn13-type Phase Formation and Magnetic Property in La-Fe-Si Alloys[J].Rare Metal Materials and Engineering,2016,45(1):244~247.]
Co元素及凝固速度对La-Fe-Si系NaZn13型相及磁性能影响
投稿时间:2014-03-02  修订日期:2014-07-12
中文关键词:  熔体快淬  La0.8Ce0.2(Fe11.5-xCox)Si1.5 合金  凝固速度  NaZn13 型相  磁滞
基金项目:上海市自然科学基金资助(项目号13ZR1415300),上海市教育委员会资助(项目号12ZZ085)
中文摘要:
      采用熔体快淬法制备不同快淬速度的 La0.8Ce0.2(Fe11.5-xCox)Si1.5 (x=0、0.3、0.5、0.7) 合金条带,经过 1273 K 20 min 热处理,通过 X 射线衍射和磁性测量研究 Co 元素及凝固速度对La-Ce-Fe-Co-Si的相形成和磁性能的影响。结果表明:Co 元素添加和快淬速度提高均有利于 NaZn13 型相的形成;Co 元素添加提高合金居里温度,减小磁滞,但是磁热性能有所降低;快淬速度提高导致合金的磁滞增大,但对磁热性能影响较小。
Influence of Co and Freezing Rate on NaZn13-type Phase Formation and Magnetic Property in La-Fe-Si Alloys
英文关键词:Melt-spun  La0.8Ce0.2(Fe11.5-xCox)Si1.5 alloys  Freezing rate  NaZn13-type  Magnetic hysteresis
英文摘要:
      La0.8Ce0.2(Fe11.5-xCox)Si1.5(x=0、0.3、0.5、0.7) ribbons were prepared by melt spinning. The phases and the magnetic property were characterized by X-ray diffraction and a vibrating sample magnetometer. The results show that Co and high quenched-speed help form the NaZn13-type phase. The substitution of Fe by Co can enhance the Curie temperature. The maximum magnetic entropy changes and the magnetic hysteresis decrease because of the substitution of Fe by Co. However, the magnetic hysteresis increases with quenched-speed rising. The quenched-speeds have little effect on maximum magnetic entropy changes and the Curie temperature.
作者单位E-mail
胡慧敏 上海大学 xiaqing.1051@163.com 
侯雪玲 上海大学 grasshuang10@163.com 
刘春雨 上海大学  
薛允 上海大学  
徐晖 上海大学  
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