纳米Cu粉对Nd_2Fe_(14)B磁性材料性能的影响  

Effect of Cu nanopowder on properties of Nd_2Fe_(14)B magnetic material

作　　者：李志杰[1] 李占富[1] 焦文玉 

机构地区：[1]沈阳工业大学理学院,沈阳110870

出　　处：《沈阳工业大学学报》2015年第5期510-514,共5页Journal of Shenyang University of Technology

基　　金：辽宁省科学技术计划资助项目(2012222010);辽宁省教育厅自然科学基金资助项目(201064145)

摘　　要：为了提高磁性材料的耐腐蚀性和力学性能,采用二元合金法制备了Nd2Fe14B磁性材料.利用X射线衍射仪、扫描电子显微镜、粒度分布仪和磁性材料测试设备分别对样品进行了性能检测.结果表明,添加纳米Cu粉后,Nd2Fe14B磁性材料的性能得到了明显的改善.当纳米Cu粉的质量分数为0.25%时,样品的剩磁、矫顽力、磁能积均得到了不同程度的提高;样品的晶界十分清晰,晶粒尺寸趋于均匀化;样品的耐腐蚀性能得到了明显的改善,且样品在0.005 mol/L的H2SO4溶液中腐蚀96 h后的质量损失仅为0.021 7 g/cm3.In order to improve the corrosion resistance and mechanical properties of magnetic materials, the Nd2Fe14B magnetic material was prepared with the binary alloying method. The samples were tested with X ray diffractometer （XRD）, scanning electron microscope （SEM）, particle size distribution instrument and magnetic material testing equipment, respectively. The results show that after adding the Cu nanopowder, the properties of Nd2Fe14 B magnetic material get obviously improved. When the mass fraction of Cu nanopowder is 0.25 %, the remanence, coercive force and magnetic energy product of the samples increase to different extents. In addition, the grain boundaries of the samples are very clear, and the grain size tends to be homogeneous. Furthermore, the corrosion resistance of the samples is obviously improved, and the mass loss of the samples after corroding in 0. 005 mol/L H2SO4 solution for 96 h is only 0. 0217 g/cm3.

关 键 词：纳米Cu粉 Nd2Fe14B磁性材料 磁性能 微观结构 稀土 矫顽力 磁能积 力学性能 

分 类 号：TM27[一般工业技术—材料科学与工程]