On estimating the intrinsic surface tension of liquid aluminum and its temperature coefficient

The current experimental capabilities do not allow researchers to measure the surface tension of aluminum without an oxide layer on its surface. Therefore, the oxide-free, or intrinsic, surface tension must still be estimated from first principles. For this purpose, the original model proposed by Skapski for estimating surface tension, and its subsequent modifications have been analyzed in this study. In addition, significant structures and statistical mechanics models have also been evaluated. Moreover, a new Skapski modification has been developed, with the enthalpy of vaporization term changing with temperature. Based on the comparison of these models with maximum experimental results from the literature, as well as analysis of the temperature coefficients, it is suggested that the intrinsic surface tension of liquid aluminum be estimated by the new modification.