Ni-Mn系新高透磁率合金「Nimalloy」の特性におよぼすAl添加の影響について

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タイトル別名
  • Effect of Aluminium Additions on the Properties of New High-Magnetic Permeability Alloys “Nimalloy” in the System of Nickel and Manganese
  • Ni-Mnケイ シン コウトウジリツ ゴウキン Nimalloy ノ トクセイ ニ オヨボス Al テンカ ノ エイキョウ ニ ツイテ
  • Effect of Aluminium Additions on the Properties of New High-Magnetic Permeability Alloys “Nimalloy” in the System of Nickel and Manganese

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Kobayashi and two of the present authors have previously discovered that nickel-manganese alloys exhibit high permeability in the concentration of less than about 24% manganese and named them Nimalloy. A further study has since been made on the effect of additions of various elements on the properties of nickel-manganese alloys and obtained the highest initial permeability of 53940 and the highest maximum permeability of 270000. In the present paper, the effect of aluminium additions on the properties of nickel-manganese alloys is presented, with the conclusion that the optimum cooling rate to develop the highest value of permeability for each alloy increases in general with increasing aluminium content. The alloy composed of 78.95%Ni, 19.85%Mn and 1.20%Al showed the highest initial permeability of 10780 when cooled at a rate of 400°C/hr from 900°C and the alloy of 78.81%Ni, 19.56%Mn and 1.63%Al exhibited the highest maximum permeability of 73200 when cooled at a rate of 800°C/hr from 900°C; the latter shows a magnetic hysteresis loss of 9.49 erg/cm3/cycle and a coercive force of 0.0121 Oe for the maximum magnetic induction of 2000 G, and a specific electrical resistivity of 61.0 μΩ-cm at 20°C.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 32 (5), 444-447, 1968

    公益社団法人 日本金属学会

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