The Density of Nickel in the Superheated and Supercooled Liquid States

A.levitation melting. technique has been used to obtain the density of liquid nickel between 1149 and 1866°C. Goodagreement is found with recent measurements by an Archimedean method for superheated liquid metal, although the levitation results are higher than those obtained by apparently reliable maximum-bubble-pressure measurements.Extensive supercooling occurs under levitation melting conditions and densities have been measured over a 300°C range below the melting temperature. The density varies linearly with temperature over the whole temperature range studied, showing no discontinuity at the melting temperature. The density is expressed by the relation:ρ(g/cm2) = 9.966 – 12.000 × 10−4T(°K)± 0.055 at the 68 per cent confidence level.