Effects of Zr substitution for rare earth on the thermal stability of melt-spun (Nd{sub}0.75Pr{sub}0.25){sub}(12.5-x)Zr{sub}xFe{sub}82B{sub}5.5(x=0-3) powder and magnets

摘要

Early studies have shown that Zr goes into the 2:14:1 structure and replaces the rare earth atoms, and leads to an increase in the anisotropy field in R{sub}2Fe{sub}14B (R=Ce, Nd, Pr, Gd and Dy). This raises an interesting question: can Zr substitution improve the performance of R{sub}2Fe{sub}14B type magnets and reduce the raw material cost? Thus, the purpose of this work is to make such a study by investigating the effects of Zr substitution for rare earth on the magnetic properties and microstructure of melt-spun (Nd{sub}0.75Pr{sub}0.25){sub}(12.5-x)Zr{sub}xFe{sub}82B{sub}5.5 (x=0-3) powder and magnets.