SmFeN系磁石の開発と展望

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タイトル別名
  • Progress and Prospects of SmFeN Magnets
  • SmFeNケイ ジシャク ノ カイハツ ト テンボウ

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説明

  More than 20 years have passed since SmFeN was discovered. At that time, because of its huge anisotropy field and high Curie temperature, SmFeN was expected to become a next-generation permanent magnetic material. However, SmFeN has the drawback that it cannot be sintered. Although considerable research has been carried out, this problem has still not been overcome. Therefore, SmFeN magnets have less potential for mass commercialization than NdFeB magnets. We propose two methods that are expected to lead to the commercial use of SmFeN. One is to increase coercivity by controlling the shape of particles, consequently increasing heat resistance. The other is to form products with new magnetic patterns by examining the magnetic orientation process. Moreover, it is important to use all rare-earth elements efficiently. Thus, we consider that SmFeN should be reappraised as a magnetic material.<br>

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 76 (1), 107-111, 2012

    公益社団法人 日本金属学会

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