The influence of zirconium addition and process parameters on the magnetic properties of Pr-Fe-B sintered magnets
Time: 2018/10/10 Hits: 2041
Sintered magnets based on the compositions Pr 16Fe 76B 8 and Pr 16Fe 75.5B 8Zr 0.5 were produced using the hydrogen decrepitation process. Sintered magnets prepared under specific processing conditions from the zirconium-free alloy exhibited excellent remanence (1.22 T), intrinsic coercivity (1.22 T) and energy product (278 kJm -3). The squareness factor of magnets prepared from the Pr 16Fe 75.5B 8Zr 0.5 alloy was improved considerably (0.96). This investigation also shows the remarkable influence of zirconium addition on the intrinsic coercivity of these permanent magnets.
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