摘要
通过优化合金成分设计和改进合金铸锭技术、合金粉末制备技术、磁场取向成型技术以及烧结技术 ,应用全部国产设备与国内通用的工业生产烧结 Nd Fe B永磁的原材料 ,不使用镓 ( Ga)等稀有贵重金属元素 ,实现了 N46与 N45 H等高性能烧结 Nd Fe B磁体的工业化生产。 N46烧结 Nd Fe B 磁体的典型磁性能为 Br =1 .392 T( 1 3.92 k G) ,Hc B =1 0 0 4 k A/m( 1 2 .62 k Oe) ,Hc J=1 0 85 k A/m( 1 3.64k Oe) ,Hk=1 0 0 8k A/m( 1 2 .67k Oe) ,( BH ) max=366k J/m3( 4 5 .9MGOe)。N45 H烧结 Nd Fe B磁体的典型磁性能为 Br=1 .386T( 1 3.86k G) ,Hc B=1 0 5 9k A/m( 1 3.32 k Oe) ,Hc J=1 41 8k A/m( 1 7.83k Oe) ,Hk=1 35 7k A/m( 1 7.0 6k Oe) ,( BH ) max=364k J/m3( 4 5 .8MGOe)。 SEM观察和 XRD分析结果表明 ,制造的高性能产品具有良好的取向度和晶粒细小而均匀的显微组织。
By optimizing the alloy compositions and improving the alloy ingot technique, powder preparing technique,magnetically aligning technique and sintering technique,N46 and N45H sintered NdFeB magnets have been successfully mass produced from common commercially available Nd,Dy,Tb,Fe,Nb,Cu,Al metals and B Fe master alloy. Typical magnetic properties for N46 sintered NdFeB magnets are B r =1.392 T(13.92kG) ,H cB =1004 kA/m( 12.62 kOe) ,H cJ =1085 kA/m(13.64kOe) ,H k =1008 kA/m(12.67kOe) and (BH) max =366 kJ/m 3(45.9MGOe) . Typical magnetic properties for N45H sintered NdFeB magnets are B r =1.386 T(13.86kG) ,H cB =1059 kA/m(13.32kOe) ,H cJ =1418 kA/m( 17.83 kOe) ,H k =1357 kA/m(17.06kOe) and (BH) max =364 kJ/m 3(45.8MGOe) . SEM and XRD analysis shows that the mass produced high performance sintered NdFeB magnets have a high alignment degree and a fine grained microstructure.
出处
《磁性材料及器件》
CAS
CSCD
2001年第5期17-22,共6页
Journal of Magnetic Materials and Devices
