Nd_(2)Fe_(14)B/PrCo_(5)纳米双相快淬带的磁性能与相互作用  

Magnetic properties and interaction of nanocomposite Nd_2Fe_(14)B/PrCo_(5) melt-spun ribbons

作　　者：薄宇 左建华 王浩 鲁伟 Bo Yu;Zuo Jianhua;Wang Hao;Lu Wei(School of Science,Inner Mongolia University of Science and Technology,Baotou Inner Mongolia 014010,China;Key Laboratory of High Performance Rare Earth Permanent Magnet Materials,Baotou Inner Mongolia 014010,China)

机构地区：[1]内蒙古科技大学理学院,内蒙古包头014010 [2]内蒙古自治区高性能稀土永磁材料重点实验室,内蒙古包头014010

出　　处：《金属热处理》2025年第1期42-46,共5页Heat Treatment of Metals

基　　金：国家自然科学基金(51761031);内蒙古自治区直属高校基本科研业务(2023QNJS117,2023RCTD009)。

摘　　要：采用感应熔炼和熔体快淬法制备Nd_(2)Fe_(14)B/PrCo_(5)纳米双相快淬带,研究了PrCo_(5)含量对快淬带相结构、磁性能和交换耦合作用的影响。XRD测试结果表明,快淬带具有Nd_(2)Fe_(14)B和PrCo_(5)双硬磁相,并且在制备过程中并未氧化和产生新相。PrCo_(5)含量对磁性能影响明显,适量添加PrCo_(5)有助于提升矫顽力,但剩磁、最大磁能积随PrCo_(5)含量的增加而降低。回复曲线研究表明,回复曲线的“开口”现象与PrCo_(5)含量有关;δ_(M)曲线测试表明Nd_(2)Fe_(14)B/PrCo_(5)快淬带存在强烈的交换耦合作用。综合分析,PrCo_(5)含量为12%时Nd_(2)Fe_(14)B/PrCo_(5)纳米双相快淬带获得最优磁性能,剩磁M_(r)=8.73 kGs,矫顽力H_(cj)=11.03 kOe,最大磁能积(BH)_(Max)=15.83 MGOe。The nanocomposite Nd_(2)Fe_(14)B/PrCo_(5) melt-spun ribbons were prepared by induction melting and melt-spinning technique,and the effect of PrCo_(5) addition on the phase structure,magnetic properties and exchange coupling was investigated.The XRD test results indicate that the ribbons has dual hard magnetic phases of Nd_(2)Fe_(14)B and PrCo_(5),and no oxidation or formation of new phases occur during the preparation process.The content of PrCo_(5) has an obvious effect on magnetic properties,and the appropriate addition of PrCo_(5) can help improve coercivity.However,the remanent and maximum magnetic energy product decrease with the increase of PrCo_(5) content.Research on the recoil loops shows that the "opening" phenomenon of the recoil loops is related to the content of PrCo_5,and the δ_(M) curve test shows that there is a strong exchange coupling effect in the Nd_(2)Fe_(14)B/PrCo_(5) ribbons.Comprehensive analysis shows that optimal magnetic properties of the nanocomposite Nd_(2)Fe_(14)B/PrCo_(5) ribbons can be obtained at 12%PrCo_(5) content,with remanent M_(r) of 8.73 kGs,coercive H_(cj) of 11.03 kOe,and the maximum magnetic energy product(BH)_(Max) of 15.83 MGOe.

关 键 词：纳米双相 Nd_(2)Fe_(14)B/PrCo_(5)快淬带 磁性能 交换耦合 

分 类 号：TM273[一般工业技术—材料科学与工程]