Ni-Mn系新高透磁率合金「Nimalloy」について

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タイトル別名
  • On a New High Magnetic Permeability Alloy “Nimalloy” in the Nickel and Manganese System
  • Ni-Mnケイ シン コウトウジリツ ゴウキン Nimalloy ニ ツイテ
  • On a New High Magnetic Permeability Alloy “Nimalloy” in the Nickel and Manganese System

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The magnetic properties of ferromagnetic Ni-Mn alloys containing less than 35.56% manganese have been measured at room temperature, after cooling at various rates from 900°C, with ring-form specimens punched from thin plates, and the relation between the magnetic permeability and order-disorder transformation of Ni3Mn (23.78 wt%Mn) has been investigated. It has been found that the initial and maximum permeabilities become larger as the cooling rate becomes smaller; the former shows only one maximum against the composition, and the latter two. An alloy containing 21.80% manganese has the best properties when cooled at the rate of 5°C/hr from 900°C; the initial permeability is 5090, the maximum permeability 12490, the magnetic hysteresis loss 18.5 erg/cm3/cycle (Bmax=2000 G), the coercive force 0.027 Oe (Bmax=2000 G), and the specific electric resistance 60.5 μΩ cm at 20°C. This alloy can be forged and rolled more easily than permalloys and has been named “Nimalloy” which is an abbreviation of Ni-Mn alloys.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 29 (3), 228-231, 1965

    公益社団法人 日本金属学会

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