摘要
研究Cu、Ga、C元素掺杂的MnAl合金的相结构和磁性能。结果表明:在Cu或者Ga掺杂的MnAl合金中加入C元素,有助于磁性相τ-MnAl的形成。Mn_(50)Al_(47)Ga_3C_3粉末的饱和磁化强度(M_s)随着球磨时间的增加而减小,矫顽力(H_c)随着球磨时间的增加先增大后减小。球磨前Mn_(50)Al_(47)Ga_3C_3合金(1000℃×20 h)样品的饱和磁化强度为89.98 Am^2/kg,约为其理论饱和磁化强度值144 Am^2/kg的62.5%;获得最好磁性能是在粉末球磨1h后,Ms=51.91Am^2/kg,Hc=155.2 kA/m。
The phase structure and magnetic properties of MnAl alloys doped with Cu, Ga and C elements were investigated. The results show that the carbon addition promotes the formation of the T-MnAl phase in MnAl alloys doped with Cu or Ga. The saturation magnetization (Ms) of Mn5oA147Ga3C3 powders decreases with the increase of the milling time, and the coercivity (Hc) firstly increases and then decreases with the increase of milling time. Ms for Mn50A147Ga3C3 bulk speciment (1000℃×20 h heat treatment) before milling is 89.98 Am^2/kg, which is about 62.5% of its theoretical Ms value (144 Am^2/kg). and then the optimal magnetic properties, such as Afs=51.91 Am^2/kg, Hc=155.2 kA/m, can be obtained from the powders ball milling for lh.
作者
瞿晓丹
陈星星
安海强
金昊昀
苏昆朋
QU Xiaodan;CHEN Xingxing;AN Haiqiang;JIN Haoyun;SU Kunpeng(Institute of Material Physics, Hangzhou Dianzi University, Hangzhou 31001,China)
出处
《热加工工艺》
北大核心
2019年第4期82-86,共5页
Hot Working Technology
基金
国家自然科学基金资助项目(51601049)
关键词
无稀土永磁
MnAl合金
热处理
饱和磁化强度
矫顽力
non-rare earth permanent magnet
MnAl alloy
heat treatment
saturation magnetization
coercivity