Materials Transactions Online

Transactions of the Japan Institute of Metals, Vol. 11 No. 6 (1970) pp.391-394
© 1970 The Japan Institute of Metals

The Thermal Expansion Coefficient and the Temperature Coefficient of Young's Modulus of Nickel-Palladium and Nickel-Platinum Alloys*

Hakaru Masumoto** and Shôhachi Sawaya**

Measurements of the linear coefficient of thermal expansion, Young's modulus and its mean temperature coefficient, and density were carried out at elevated temperatures so as to investigate the variation in the Elinvar property of nickel at high temperature with the addition of palladium and platinum. It has been made clear from the results of these measurements that in the Ni-Pd and Ni-Pt systems investigated the high temperature at which the Elinvar property of nickel appears falls down along the magnetic transformation point with increasing additive elements, and also a minimum linear coefficient of thermal expansion which represents the Invar property is observed near a composition in which the Elinvar property occurs.

(Received June 18, 1970)


* This paper was presented at the 1963 Autumn Meeting of the Japan Institute of Metals. Reported originally in Japanese in J. Japan Inst. Metals, 33 (1969), 1414. The 40th report from The Foundation : The Research Institute of Electric and Magnetic Alloys, Sendai, Japan.

** The Foundation : The Research Institute of Electric and Magnetic Alloys, Sendai, Japan.

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