Co-Al系新磁石合金「Malcolloy」の特性におよぼすMo添加の影響について

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タイトル別名
  • The Influence of the Addition of Molybdenum on the Characteristics of New Magnet Alloys “Malcolloy” in the System of Cobalt and Aluminum
  • Co-Alケイ シン ジシャク ゴウキン Malcolloy ノ トクセイ ニ オヨボス Mo テンカ ノ エイキョウ ニ ツイテ
  • The Influence of the Addition of Molybdenum on the Characteristics of New Magnet Alloys “Malcolloy” in the System of Cobalt and Aluminum

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Three years ago, the present investigators found a new magnet alloy “Malcolloy” having a high coercive force and determined the influence of the addition of nickel on their properties, the highest coercive force obtained being 1500 Oe. Further, they have investigated the influence of the addition of molybdenum on the properties of Co-Al alloys and discovered that the coercive force of Co-Al alloys is increased generally by the addition of molybdenum. An alloy containing 80.51%Co, 13.96%Al and 5.53%Mo shows the coercive force of 1600 Oe, the residual magnetic flux density of 2750 G and the maximum energy product of 1.34×106 G·Oe, when tempered at 600°C for 20 hours after water-quenching from 1380°C. These alloys consist of many ferromagnetic elongated particles of about 400 Å in mean diameter which are dispersed in the matrix of almost non-magnetic β phase. Consequently, it may be concluded that the high coercivity of these alloys is mainly caused by the existence of the small particles, each of them being composed of a single magnetic domain.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 29 (3), 217-222, 1965

    公益社団法人 日本金属学会

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