Effects of Additions of Aluminum and Tantalum on the Elinvar Property of Nickel at Low and High Temperatures

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  • Niの高温におけるエリンバー特性におよぼすAlおよびTa添加の影響について
  • Ni ノ コウオン ニ オケル エリンバー トクセイ ニ オヨボス Al オヨ

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Abstract

Young’s modulus at low and high temperatures and thermal expansion at room temperature have been measured so as to investigate the effects of additions of aluminum and tantalum on the Elinvar property of nickel at high temperature. In the alloy systems Ni-Al and Ni-Ta, the critical temperature at which the Elinvar property of nickel appears falls down gradually along the magnetic transformation point with increasing addition of each element. Also, a small minimum linear coefficient of thermal expansion appears near the composition at which the Elinvar property is revealed at room temperature.

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