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

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タイトル別名
  • Effect of Iron and Molybdenum Additions on the Properties of New High Magnetic Permeability Alloys “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 ノ トクセイ ニ オヨボス Fe オヨビ Mo テンカ ノ エイキョウ ニ ツイテ
  • Effect of Iron and Molybdenum Additions on the Properties of New High Magnetic Permeability Alloys “Nimalloy” in the Nickel and Manganese System

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抄録

Scince the original discovery of “Nimally” on Ni-Mn alloys containing less than about 24%Mn which exhibit high permeability when subjected to an appropriate heat treatments. Much work has since been carried out so as to investigate the effects of various element additions on the properties of Ni-Mn alloys, and numerous alloys having superior magnetic properties have been obtained. It has been known that the cooling rate should be as large as possible for the Ni-Mn-Fe alloys and as small as possible for the Ni-Mn-Mo alloys in order to develop their excellent magnetic properties. Therefore the present authors have investigated the Ni-Mn-Fe-Mo system so as to obtain the alloys which exhibit the superior magnetic properties as in the case of the Ni-Mn-Fe-Cr system at a moderate cooling speed as the furnace cooling. As a result, the highest initial permeability of 46540 was obtained on the alloy composed of 76.88%Ni, 11.22%Mn, 4.67%Fe and 7.23%Mo when cooled at a rate of 400°C/hr from 900°C, and the highest maximum permeability of 270000 was obtained on the alloy of 77.13%Ni, 10.66%Mn, 5.15%Fe and 7.06%Mo when cooled at a rate of 2800°C/hr from 900°C. The latter alloy shows a coercive force of 0.0019 Oe and a magnetic hysteresis loss of 0.53 erg/cm3/cycle for the maximum magnetic induction of 1000 G, its electrical resistivity being 89.4 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 (12), 1242-1247, 1970

    公益社団法人 日本金属学会

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