氢爆工艺中脱氢程度对烧结NdFeB磁体永磁性的影响  

The Effect of H-desorption in HD Process on Sintered NdFeB Permanent Magnets

作　　者：朱青[1] 刘长庆[2] 王亦忠[2] 王震西[2] 

机构地区：[1]中国科学院物理研究所,北京100080 [2]中国科学院三环新材料研究开发公司研究部,北京100080

出　　处：《金属功能材料》2003年第1期1-3,共3页Metallic Functional Materials

摘　　要：研究了氢爆工艺中不同的脱氢气压对烧结NdFeB磁体永磁性能的影响。结果指出 ,随着脱氢气压的增大 ,磁体的磁能积和矫顽力也增大。样品不脱氢时 ,磁体内出现大量微裂纹 ,这是由于烧结时放气量太大的缘故。The effect of various H-desorption pressures in HD process on sintered NdFeB permanent magnets is studied.Experimental results show that with the H-desorption pressure increasing,the energy product and the intrinsic coercivity of the magnets increase too.Without H-desorption in HD process,the magnet has a lot of microfissures.That results from the H-desorption process when sintering.It shows that to choose an optimal H-desorption pressure in HD process is important.

关 键 词：脱氢 烧结磁体 钕铁硼 氢爆工艺 磁性 

分 类 号：TF125.8[冶金工程—粉末冶金]