高级搜索

Nb含量对烧结NdFeB永磁体磁性能及显微结构的影响

,  , 

downloadPDF

上一篇

下一篇

成问好, 李卫, 李传健. 2001: Nb含量对烧结NdFeB永磁体磁性能及显微结构的影响, 物理学报, 50(1): 139-143. doi: 10.3321/j.issn:1000-3290.2001.01.027
引用本文: 成问好, 李卫, 李传健. 2001: Nb含量对烧结NdFeB永磁体磁性能及显微结构的影响, 物理学报, 50(1): 139-143. doi: 10.3321/j.issn:1000-3290.2001.01.027
shu
CHENG WEN-HAO, LI WEI, LI Chuan-jian. 2001: INVESTIGATIONS ON THE MAGNETIC PROPERTIES AND MICROSTRUCTURES OF SINTERED NdFeB MAGNETS WITH DIFFERENT Nb ADDITIONS, Acta Physica Sinica, 50(1): 139-143. doi: 10.3321/j.issn:1000-3290.2001.01.027
Citation: CHENG WEN-HAO, LI WEI, LI Chuan-jian. 2001: INVESTIGATIONS ON THE MAGNETIC PROPERTIES AND MICROSTRUCTURES OF SINTERED NdFeB MAGNETS WITH DIFFERENT Nb ADDITIONS, Acta Physica Sinica, 50(1): 139-143. doi: 10.3321/j.issn:1000-3290.2001.01.027
shu

Nb含量对烧结NdFeB永磁体磁性能及显微结构的影响

  • 钢铁研究总院功能材料研究所,

INVESTIGATIONS ON THE MAGNETIC PROPERTIES AND MICROSTRUCTURES OF SINTERED NdFeB MAGNETS WITH DIFFERENT Nb ADDITIONS

  • 摘要: 对Nd33.0Fe65.9-xNbxB1.1(wt%,x=0,0.3,0.6,1.0,1.5,2.0)系列烧结永磁体的磁性能、组织形貌以及磁性能与组织形貌间的关系进行了系统研究.研究发现，不含Nb的NdFeB磁体晶粒的大小、形状差异非常大.这种结构使NdFeB磁体的磁性能恶化.添加一定量的Nb元素后，磁体的组织结构变得均匀一致.当Nb含量小于1.0时磁体矫顽力、剩磁、磁能积均比相应不含Nb的磁体高.其原因是Nb使NdFeB磁体的晶粒变得均匀一致，密度提高.Nb对NdFeB磁体的绝大部分磁性能的影响均与Nb使NdFeB磁体的晶粒得到均匀化有关.
    Abstract: The magnetic properties and microstructures of a series of sintered magnets Nd33.0Fe65.9-xNbxB1.1(wt%,x=0,0.3,0.6,1.0,1.5,2.0) as well as their relations were investigated in detail. It was found that the grain size of NdFeB magnet without Nb addition was quiet different from each other and the shape of the grains was very irregular, which led to the deterioration of the magnetic properties. The microstructures of the magnets with proper Nb addition became homogeneous and the final size of the grain after annealing was very fine, and, correspondingly, the density of the final magnet was increased to a higher level. Magnetic measurements showed that the coercivity iHc, magnetic remanence Br and energy product (BH)max of the magnet with Nb additions below 1.0wt% were generally higher than those of their Nb-free counterparts. The effect of Nb on the magnetic properties originated mainly from the homogenization of the microstructure due to Nb addition.
  • 加载中
  • 加载中
计量
  • 文章访问数:  806
  • HTML全文浏览数:  209
  • PDF下载数:  122
  • 施引文献:  0
出版历程

Nb含量对烧结NdFeB永磁体磁性能及显微结构的影响

  • 钢铁研究总院功能材料研究所,

摘要: 对Nd33.0Fe65.9-xNbxB1.1(wt%,x=0,0.3,0.6,1.0,1.5,2.0)系列烧结永磁体的磁性能、组织形貌以及磁性能与组织形貌间的关系进行了系统研究.研究发现，不含Nb的NdFeB磁体晶粒的大小、形状差异非常大.这种结构使NdFeB磁体的磁性能恶化.添加一定量的Nb元素后，磁体的组织结构变得均匀一致.当Nb含量小于1.0时磁体矫顽力、剩磁、磁能积均比相应不含Nb的磁体高.其原因是Nb使NdFeB磁体的晶粒变得均匀一致，密度提高.Nb对NdFeB磁体的绝大部分磁性能的影响均与Nb使NdFeB磁体的晶粒得到均匀化有关.

English Abstract

    全文HTML

参考文献 (0)

目录

/

返回文章
返回