Density and excess volume of liquid copper, nickel, iron, and their binary alloys

Abstract

Abstract The densities of liquid copper, nickel and iron and their binary alloys have been measured over a wide temperature range, including the undercooled regime. A non-contact technique was used, consisting of electromagnetic levitation and optical dilatometry. In all cases the density was a linear function of temperature. On the other hand, the concentration dependence was only linear for Fe–Ni, whereas Fe–Cu and Cu–Ni are characterized by a positive or negative excess volume respectively.