Thermodynamics of oxygen in dilute liquid silver–tellurium alloys

The activity coefficient of oxygen 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 descr...

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Bibliographic Details
Published in:Monatshefte für Chemie 2012, Vol.143 (9), p.1219-1224
Main Authors: Nyk, Justyna, Onderka, Bogusław
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Inorganic Chemistry
Organic Chemistry
Original Paper
Physical Chemistry
Theoretical and Computational Chemistry
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Summary:The activity coefficient of oxygen 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 . Next, the oxygen activity coefficient in dilute Ag–(Te)–O alloys for variable X Te content (from 0.01 to 0.06) was measured. From the obtained results, Wagner’s interaction parameter as a function of temperature was derived in the form . The electrochemical coulometric titration method seems to be very useful to study the thermodynamics of oxygen interaction in liquid silver and its alloys. Graphical abstract
ISSN:0026-9247
1434-4475
DOI:10.1007/s00706-012-0771-z