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

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  • Effects of Tantalum Additions on the Properties of New Magnetic Permeability Alloys “Nimalloy” in Nickel and Manganese System
  • 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 Ta テンカ ノ エイキョウ ニ ツイテ
  • Effects of Tantalum Additions on the Properties of New Magnetic Permeability Alloys “Nimalloy” in Nickel and Manganese System

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Masumoto et al. previously discovered that alloys near in composition to Ni3Mn exhibited high permeability when these alloys had an optimum degree of order, and named them Nimalloy. In the subsequent work on the effect of various element additions on the properties of Ni-Mn alloys, the highest initial permeability of 121000 and the highest maximum permeability of 643000 have been obtained in Ni-Mn-Fe-Cr-Mo alloys.<BR>The results show that with increasing Ta content, the permeability of Ni-Mn alloys increases gradually at the beginning and later rapidly attains a maximum, and then decrease gradually. The highest initial permeability of 20470 is obtained on the alloy composed of 75.88%Ni, 19.47%Mn and 4.65%Ta when cooled at a rate of 240°C/hr from 900°C and baked at 440°C for 64 hr, and the highest maximum permeability of 84800 on the alloy of 75.37%Ni, 19.08%Mn and 5.55%Ta when cooled at a rate of 240°C/hr from 900°C and baked at 440°C for 65 hr. The latter alloy shows a coercive force of 0.0253 Oe and a magnetic hysteresis loss of 50.85 erg/cm3/cycle for the maximum magnetic induction of 5000 G, and its electrical resistivity being 52.7 μΩ-cm at 20°C.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 34 (10), 1029-1033, 1970

    公益社団法人 日本金属学会

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