有色金属科学与工程2025，Vol.16Issue(1)：65-74,10.DOI:10.13264/j.cnki.ysjskx.2025.01.008
纳米晶(Nd,Ce)-Fe-B/(Nd,R)-Fe-B(R=Pr,La)热压磁体的制备和性能研究
Preparation and Performance of Nano-crystalline(Nd,Ce)-Fe-B/(Nd,R)-Fe-B(R=Pr,La)Hot-pressed Magnets
摘要
Abstract
Based on the dual-alloy technology,isotropic nanocrystalline(Nd,Ce)-Fe-B/(Nd,R)-Fe-B(R=Pr,La)hot-pressed magnets with different proportions were prepared by spark plasma sintering,and the magnetic properties and microstructure of the hot-pressed magnets were investigated.The results show that the remanence and coercivity are improved with the addition of(Pr,Nd)-Fe-B alloy.BSE images(results)shows that the agglomerated block rare earth-rich phase gradually disappears,and the grain boundary phase becomes more uniform and thin,thereby increasing the coercivity.In addition,the increase of the proportion of(Pr,Nd)-Fe-B main phase also effectively improves the magnetic properties of hot-pressed magnets.When the addition amount is 60%,the magnetic properties of Jr=8.58×0.1(T),Hcj=12.65×79.6(kA/m),(BH)max=15.79×7.96(kJ/m3)were obtained.关键词
双合金/磁性能/微观结构/放电等离子烧结Key words
double alloy/magnetic properties/microstructure/spark plasma sintering分类
动力与电气工程引用本文复制引用
危伟国,江庆政,刘增国..纳米晶(Nd,Ce)-Fe-B/(Nd,R)-Fe-B(R=Pr,La)热压磁体的制备和性能研究[J].有色金属科学与工程,2025,16(1):65-74,10.基金项目
国家自然科学基金资助项目(52061015) （52061015）
江西省重大科技研发专项(20213AAE02016) （20213AAE02016）
江西省自然科学基金项目(20212BAB214018) （20212BAB214018）
