Rare earth-fe-b anisotropic permanent magnet and its manufacture

Abstract

Abstract PURPOSE:To improve magnetic characteristics even with thin shape by making an R2P14B intermetel compound phase, which is oriented in the direction of crystallographic C axis by rolling recrystallized organization and takes tetragonal structure of specific crystal diameter, a main phase. CONSTITUTION:The R2Fe14B intermetal compound phase taking tetragonal structure of 0.05-50mum, preferably, 0.05-10mum in average crystal diameter is made a main phase, and this main phase is recrystallized rolled organization having aggregate structure oriented in the direction of crystallographic C axis. And since there is no mixture of impurity such as O2, etc., and density ratio is almost 100%, magnetic characteristics are very stable.

Inventors

• 👤 Takuo Takeshita
• 👤 武下　拓夫
• 👤 Toshiro Kimura
• 👤 敏郎 木村
• 👤 Toru Yamauchi
• 👤 徹 山内
• 👤 Ryoji Nakayama
• 👤 亮治 中山
• 👤 Tamotsu Ogawa
• 👤 保 小川

Bibliographic Details