Activity measurement of liquid Ga‐In‐Te alloys by emf method with stabilized zirconia

Abstract

Electromotive force of galvanic cells with zirconia solid electrolytes was measured to determine the activity of gallium in liquid Ga‐In‐Te alloys in the temperature range of 1000 to 1200 K along 3 psuedobinary lines of (InyTe1−y)‐Ga where y= 0.25, 0.50 and 0.75. The mixture of Ga and Ga2O3 was used as a reference electrode. The activity curves of Ga are very complicated at 1073 K. Isoactivity curves at 1073 K in the ternary Ga‐In‐Te alloys were derived by combining the activity data of Ga‐In and Ga‐Te alloys. Using Darken's equation, 2 binary data of Ga‐In and Ga‐Te and ternary data in this study, ΔGXS at 1073 K were derived. The results were compared with those from 3 model calculations proposed by Toop, Kohler and Chou to show better agreement between the experimental values and those by Toop's and Chou's models.