Activity measurement of Ga in liquid Ga-Pb alloys by EMF method with zirconia solid electrolyte

Abstract

EMF measurement of the electrochemical cell with zirconia as solid electrolyte was performed to determine the gallium activity from 950 to 1150K in the entire composition range of liquid Ga-Pb alloys. In the whole concentration range, activity of Ga shows moderately positive deviations from ideality, and activity of Pb which is derived by Gibbs- Duhem equation shows also positive deviation from ideality. These are compared with published data obtained by different experimental methods.

Keywords

• thermodynamics
• activity
• Ga-Pb alloy
• emf method
• zirconia solid electrolyte
• liquid binary alloy