The magnetic properties of cast and hot- rolled Pr17Fe77.5 B4M1.5 (M=Cu, Ga, Ag, Al, In and Pb) alloys were investigated, in order to explore the rule of additive elements in improving the magnetic properties in the Pr-Fe-B system. It is found that Ga and Ag additions have a similiar effect as Cu in increasing the coercivity in both cast and hot-rolled specimens. The coercivity of these hot-rolled magnets containing Ga, Ag or Cu can easily reach 10k0e or greater. This is due to the grain refinement as well as the enhanced smoothing of grain boundaries.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering