论文部分内容阅读
研究了添加Zr元素对快淬(Nd,Pr)10.5Fe81.5-ZrxCo2B6(x=0,0.5,1.0,1.5,2.0,2.5)合金显微组织结构和磁性x能的影响,用AFM观察了合金条带自由表面的显微结构。结果表明:添加Zr元素能显著细化合金的晶粒,从(Nd,Pr)10.5Fe81.5Co2B6合金的~150nm减小到(Nd,Pr)10.5Fe80Zr1.5Co2B6合金的~50nm;1%是Zr最佳添加量,低于1%晶粒不够细化,合金的各项磁性能指标均很低,超过1%,富集在晶界处的富Zr晶间相加厚,晶粒间的交换作用和剩磁增强效应减弱,磁体的剩磁Br和最大磁能积(BH)m降低。(Nd,Pr)10.5Fe80.5Zr1Co2B6粘结磁体磁性能最佳:Br=0.675T,Hci=616kA·m-1,(BH)m=77kJ·m-3。
The effects of Zr addition on the microstructure and magnetic X-ray energy of the rapidly quenched (Nd, Pr) 10.5Fe81.5-ZrxCo2B6 (x = 0,0.5,1.0,1.5,2.0,2.5) alloys were investigated. Microstructure of free surface of alloy strip. The results show that the addition of Zr element can remarkably refine the grain size of the alloy, decreasing from ~ 150nm of (Nd, Pr) 10.5Fe81.5Co2B6 alloy to ~ 50nm of (Nd, Pr) 10.5Fe80Zr1.5Co2B6 alloy; 1% The optimal addition amount, less than 1% of the grain is not refined enough, the various magnetic properties of the alloy are very low, more than 1% enriched in the grain boundary rich Zr intergranular phase thickening, the exchange between the grains The effect and residual magnetization enhancement effect weakened, the remanence Br of the magnet and the maximum energy product (BH) m decreased. (Nd, Pr) 10.5Fe80.5Zr1Co2B6 bonded magnets have the best magnetic properties: Br = 0.675T, Hci = 616kA · m-1 and (BH) m = 77kJ · m-3.