2-17型Sm-Co磁石の1-7相の安定化におよぼすジルコニウムの効果

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書誌事項

タイトル別名
  • Effect of Zirconium on Stabilization for the 1-7 Phase in 2-17 Type Sm-Co Permanent Magnet
  • 2-17ガタ Sm Co ジシャク ノ 1-7ソウ ノ アンテイカ ニ オヨボ

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抄録

The 2-17 type rare earth permanent magnets show high coercivity only when they are subjected to aging after solution treatment. It is necessary for obtaining the high coercivity that they are in a single 1-7 phase region at the solution temperature. In the present study, an isothermal phase diagram in the Sm-Zr-Co ternary system at 1473 K close to the solution temperature was constructed, in order to investigate the extent of composition ranges stable for the 1-7 phase due to Zr addition, and the behavior of the Zr atom in the 1-7 phase was investigated. It is shown that the Zr addition may fairly extend the stable 1-7 phase region to the higher Co content. Zr atom dissolved in the 1-7 phase seems to substitute either a pair of Co atoms occupying a dumbbell site or a single Sm atom involved in the 1-7 phase.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 52 (5), 502-507, 1988

    公益社団法人 日本金属学会

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