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Abstract
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In this work, an analytical equation of state based on statistical mechanical
perturbation theory, which was initially developed for normal fluids and can
be applied to predict the P–V –T data for saturated liquid alkaline earth metals, is presented. The equation of state is that of Ihm, Song, and Mason, and
the temperature-dependent parameters of the equation of state are calculated
from a corresponding-states correlation as functions of the reduced temperature. Two scaling constants are sufficient for this purpose, the surface tension
and the liquid density at the melting point. The equation of state is used to
predict the saturated liquid density of molten alkaline earth metals from the
melting point up to 2000 K, for which experimental data exist, within an
accuracy of 5%.
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