アルニコ系磁石の低温処理について

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書誌事項

タイトル別名
  • On the Low Temperature Treatment of An Alnico Permanent Magnet
  • アルニコケイ ジシャク ノ テイオン ショリ ニ ツイテ

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抄録

An Alnico permanent magnet has hitherto been heated at above 1250°C, which is in the range of the solid solution of the alloy, in order to obtain the best characteristics. From various investigations, we have found that the same or even better properties of the alloy can be obtained by the low temperature treatment at 875°C, lower than 1250°C. Conditions of the low temperature treatment are as follow the heating temperature is 875°C, the holding time at 875°C is 1 hr, the cooling velocity from 875°C to 750°C is about 1°C/sec, and the temperature range effective to magnetic cooling is to 800°C. The structure of the alloy affected by the low temperature treatment contains a dendrite which does not appear in the alloy heated at the high temperature and can be revealed by the etching with 30% HNO3.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 28 (6), 313-319, 1964

    公益社団法人 日本金属学会

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