烧结NdFeB永磁材料腐蚀与防护的研究现状及挑战

吴玉程, 高志强, 徐光青, 刘家琴, 轩海成, 刘友好, 衣晓飞, 陈静武, 韩培德

Current Status and Challenges in Corrosion and Protection Strategies for Sintered NdFeB Magnets

WU Yucheng, GAO Zhiqiang, XU Guangqing, LIU Jiaqin, XUAN Haicheng, LIU Youhao, YI Xiaofei, CHEN Jingwu, HAN Peide

表1 合金化法常用元素及其作用

Table 1 Commonly used elements in alloying process and their roles

Element Speciation Role Typical element Rare earth Nd-M1-Fe Substitute for Nd Dy, Tb, Ce, La, Y Transition/group element Nd-M2 or Nd-M2-Fe Substitute for Fe Cu, Al, Ga, Zn, Ge, Sn Transition/group element M3-B or Fe-M3-B Substitute for Fe Co, Nb, Zr, Ti, V, Mo