Activity Measurements of Liquid Cu–In Alloys by an EMF Method Using a Zirconia Electrolyte

Abstract

Deviations of the activities of indium and copper from Raoult's law are positive for the indium rich region and are negative for the copper rich side of the system. The present result agreed approximately with the data measured by Azakami and Yazawa. The α functions of indium for the system show the curvesagainst N In , suggesting that the alloys are not considered as regular solution. Heats of mixing are negative for copper rich alloys and slightly positive for indium rich alloys