[P] P9~P23 Electric/Magnetic Materials

[P17] Precipitate Phase Formation and Distribution Behavior of Sn and In in ThMn12-Type SmFe11Ti

○Hibiki Tsutsumi¹, Keigo Chino¹, Takafumi Yamamoto¹, Ryuji Tamura¹ (1. Tokyo Univ. of Sci.)

Keywords:

permanent magnet,ThMn12-tyoe compound,coercivity,grain boundary phase,elemental distribution

ThMn12-type SmFe11Ti requires additives that form non-ferromagnetic grain-boundary phases without substituting Fe for coercivity development. We report the precipitate phases formed by Sn and In additions and the distribution behavior of these elements compared with Cu addition.