Cu和Zr元素取代对Sm2Co7快淬带磁性能的影响
Effect of Cu and Zr Substitution on Magnetic Properties of Sm2Co7 Melt-Spun Ribbons
侯永杰 1左建华 1李敏敏 1薄宇 1章明 1董福海 1白锁1
作者信息
- 1. 内蒙古科技大学理学院,内蒙古包头 014010
- 折叠
摘要
采用感应熔炼和熔体快淬技术制备了 Sm2Co7-xRx(R=Cu、Zr;x=0、0.1、0.2、0.3、0.4)快淬带,研究了取代元素、取代量和快淬速度对快淬带磁性能、晶粒间相互作用和不可逆翻转场的影响规律.磁性能测试结果表明,Cu和Zr取代在快淬带内引起了强烈的钉扎效应,有助于提升快淬带的矫顽力,且均在x=0.3时获得最大矫顽力;Cu取代量x=0.1、0.2、0.4时快淬带的剩磁与最大磁能积随快淬速度逐渐降低,取代量x=0.3时表现为逐渐升高;Zr取代量x=0.1～0.4时快淬带的剩磁与最大磁能积均随快淬速度的增加先升高后降低.Henkel曲线测试结果表明,对于Cu元素和Zr元素取代,δM值均在x=0.3时达到最大,表明此时快淬带晶粒间的交换耦合作用最强;Sm2(Co,Cu)7和Sm2(Co,Zr)7快淬带的最大δM值分别为1.48和1.04.适量Cu、Zr元素取代可以提高Sm2Co7磁体在反磁化过程中的不可逆翻转场Hn.
Abstract
Sm2Co7-xRx(R=Cu,Zr;x=0,0.1,0.2,0.3,0.4)melt-spun ribbons were prepared by induction melting and melt spinning.The effects of substitution elements,substitution amount,and melt spinning rate on magnetic properties,intergranular interaction and irreversible reversal field of the melt-spun rib-bons were studied.The results of the magnetic property test show that Cu and Zr substitution causes strong pinning effect within the melt-spun ribbons,contributing to improving the coercivity of the melt-spun ribbons,and both achieve maximum coercivity at x=0.3.When the substitution amount x of Cu is 0.1,0.2 and 0.4,the remanence and maximum magnetic energy product of the melt-spun ribbons gradually decrease with the melt spinning rate,while they gradually increase at x=0.3.When the Zr substitution a-mount x is 0.1～0.4,the remanence and maximum magnetic energy product of the melt-spun ribbons in-crease at first and then decrease with the increase of melt spinning rate.The Henkel curve test results indi-cate that for both Cu and Zr substitution,8M value reaches its maximum at x=0.3,indicating that the in-tergranular exchange coupling effect in the melt-spun ribbons reaches its maximum at this point.The ma-ximum 8M values of Sm2(Co,Cu)7 and Sm2(Co,Zr)7 melt-spun ribbons are 1.48 and 1.04,respectively.A moderate substitution amount of Cu and Zr elements can enhance the irreversible reversal field Hn of the Sm2Co7 magnet during demagnetization.
关键词
Sm2Co7/快淬带/Cu和Zr取代/快淬速度/磁性能/交换耦合/不可逆翻转场Key words
Sm2Co7/melt-spun ribbon/Cu and Zr substitution/melt spinning rate/magnetic property/ex-change coupling/irreversible reversal field引用本文复制引用
基金项目
国家自然科学基金地区科学基金(51761031)
内蒙古自治区直属高校基本科研业务费项目(2023QNJS117)
出版年
2024
NETL
NSTL
万方数据