含Ti和C的纳米复合Nd_2Fe_(14)B/α-Fe磁体研究  

Nanocomposite Nd_2Fe_(14)B/α-Fe Magnets with Ti and C Additions

作　　者：李顺[1] 白书欣[1] 张虹[1] 陈柯[1] 肖加余[1] 

机构地区：[1]国防科技大学材料工程与应用化学系,长沙410073

出　　处：《材料工程》2008年第12期15-18,共4页Journal of Materials Engineering

摘　　要：研究Ti和C添加对Nd9.4Fe79.6B11合金磁性能的影响规律。结果表明:Ti和C联合添加能够在不降低合金剩磁的情况下显著提高合金的矫顽力,最佳工艺条件下制备出的Nd9.4Fe75.6Ti4B10.5C0.5合金薄带的剩磁Br=0.91T,矫顽力Hcj=975.6kA/m,磁能积(BH)max=135.4kJ/m3。在磁体密度为6.1g/cm3时,黏结Nd9.4Fe75.6Ti4B10.5C0.5磁体剩磁Br=0.68T,内禀矫顽力Hcj=975kA/m,最大磁能积(BH)max=76 kJ/m3,性能和MQ-D磁粉制备的黏结磁体性能相当,具有低价位高性能的特点。The effects of Ti and C additions on the magnetic properties of Nd9.4Fe79.6B11 alloy were investigated. The results showed that marked enhancement of coercivity was gained without sacrificing much remanence with the addition of Ti and C. Excellent magnetic properties of Br=0.91T, Hcj = 975.6kA/m, and （BH）max = 135.4kJ/m^3 were achieved in Nd9.4 Fe75.6 Ti4 B10.5 C0.5 alloy ribbons. In comparison with bonded MQ-D magnets, low cost bonded Nd9. 4 Fe75. 6 Ti4 B10. 5 C0.5 magnets with a density of 6. 1g/cma and high magnetic properties of Br=0.68T, Hcj=975kA/m, and （BH）max=76 kJ/ m^3 were also achieved.

关 键 词：纳米复合磁体 退磁曲线 黏结磁体 

分 类 号：TM271[一般工业技术—材料科学与工程]