【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。这些表明选择合适的脱氢平衡气压是氢爆工艺中的一个重要因素更多还原

【Abstract】 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.更多还原