화학공학소재연구정보센터
Materials Science Forum, Vol.416-4, 168-171, 2003
The effect of zirconium additions on the magnetic properties of Pr-Fe-BHD sintered magnets
Sintered permanent magnets based on the compositions Pr16Fe76B8 and Pr16Fe75.5B8Zr0.5 have been prepared using the hydrogen decrepitation process. It has been shown that small amount of zirconium addition to a Pr16Fe76B8 sintered and fast cooled magnet improves the squareness factor (0.68 to 0.96) and diminishes the intrinsic coercivity. Sintered and slow cooled Pr-Fe-B-Zr and Zr-free magnets exhibited higher intrinsic coercivities (1095kA/m) than the fast cooled magnets.