title: Thermodynamics of oxygen in dilute liquid silver-tellurium alloys.
abstract: The activity coefficient of oxygen [Formula: see text] in liquid Ag and binary Ag-Te dilute alloys were determined between 1,285 and 1,485 K by coulometric titration using the electrochemical cell (Ir, [O] in liquid metal or alloy | yttria stabilized zirconia | air, Pt). The experimental and evaluation procedures described in the literature were adopted. The oxygen activity coefficient was determined in pure liquid silver to be [Formula: see text]. Next, the oxygen activity coefficient in dilute Ag-(Te)-O alloys for variableXTecontent (from 0.01 to 0.06) was measured. From the obtained results, Wagner's interaction parameter [Formula: see text] as a function of temperature was derived in the form [Formula: see text]. The electrochemical coulometric titration method seems to be very useful to study the thermodynamics of oxygen interaction in liquid silver and its alloys.
authors.affiliation: Laboratory of Physical Chemistry and Electrochemistry, Faculty of Non-Ferrous Metals, AGH University of Science and Technology, 30 Mickiewicza Ave, Krakow, Poland.
authors.forename: Justyna
authors.initials: J
authors.lastname: Nyk
authors.affiliation: Laboratory of Physical Chemistry and Electrochemistry, Faculty of Non-Ferrous Metals, AGH University of Science and Technology, 30 Mickiewicza Ave, Krakow, Poland.
authors.forename: Bogusław
authors.initials: B
authors.lastname: Onderka
keywords: Galvanic cell; Liquid solution; Oxygen activity; Silver–tellurium alloys; Solid electrolyte