Effect of Rare Earth Substitution on Machinability of R-Fe-B Sintered Magnets
The machinability of sintered Nd-Fe-B magnets with nominal compositions of (Nd1-xDyx)16Fe78B6 (x = 0,0.05, 0.10,0.15) and (Nd1-yPry)16Fe78B6 (y = 0,0.33,0.67,1), has been investigated. The bending strength, fracture toughness and the Vickers Hardness were measured. It shows that the Dy substituted magnets shows higher Vickers Hardness than the Pr substituted magnets. The brittle index for investigated magnets improves monotonously with increasing Dy content, reduces with increasing Pr content, respectively, which seems to relate closely to the change of the lattice parameters.
sintered Nd-Fe-B permanent magnet brittle indez bending strength fracture toughness
WANG Hui-jie LI An-hua ZHU Ming-gang LI Wei
Division of Functional Materials, Central Iron and Steel Research Institute, Beijing 100081, China
国际会议
北京
英文
367-371
2006-08-29（万方平台首次上网日期，不代表论文的发表时间）