HTHP 37.1, p. 5-12

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Thermophysical property measurements of liquid and supercooled cobalt
Paul-François Paradis, Takehiko Ishikawa and Noriyuki Koike

This paper, focusing on cobalt, is part of a systematic determination of the properties of liquid metals carried out at the Japan Aerospace Exploration Agency using an electrostatic levitator. Over the 1690 to 1850 K temperature span, the density can be expressed as r(T) = 7.77 ¥ 10³ – 0.63 T – T_m) kg·m^-3 with T_m = 1768 K, yielding a volume expansion coefficient of 8.1 ¥ 10^-5 K^-1. In addition, the surface tension can be expressed as s(T) = 1.89 ¥ 10³ – 0.19 (T – T_m) mN·m^-1 and the viscosity as h(T) = 0.033 exp [8 2 ¥ 10⁵ /(RT ] mPa·s over the 1685 to 1955 K interval.

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