Abstract：The sintered NdFeB magnet was produced by the main processes of casting, hydrogen decrepitating and milling. The influences on magnetic properties and micro- structure of sintered NdFeB magnets were studied by the addition of dysprosium alloy. In a certain range, with the increasing percentage of adding dysprosium alloy, namely (PrNd)19Dy23(FeCoCuGa)balB1, the remanence of NdFeB magnet decreased, while the coercivity increased. When the percentage of Dy addition was less than 2. 3% (mass fraction), the magnetic properties can be higher than that of the magnet without addition. When the percentage of Dy addition was more than 2. 99% (mass fraction), the maximum energy product and density of the magnet can decrease obviously, compared the magnet without addition at the same sintering temperature. By increasing the sintering temperature properly, the density and maximum energy product of magnet with high Dy addition can be increased, and also the comprehensive magnetic properties were much higher than that without addition.
宋伟，周军，孙红军，徐鹏，周根超，聂明. 富镝辅合金添加对烧结NdFeB磁体磁性能与微观结构的影响及其电化学性能研究[J]. , 2018, 25(2): 43-46.
SONG Wei,ZHOU Jun,SUN Hong- jun,XU Peng,ZHOU Gen- chao,NIE Ming. The influences on magnetic property and micro structure of sintered NdFeB magnets by the addition of dysprosium alloy. , 2018, 25(2): 43-46.
2018, Vol. 25 
