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Thermodynamics of Aluminium in Molten Zinc with the use of Electrochemical Sensors
Author(s) -
Pouri Masoumeh Hossein,
Soltanieh Mansour
Publication year - 2006
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.200606484
Subject(s) - aluminium , zinc , thermodynamics , molten salt , activity coefficient , electrochemistry , materials science , metallurgy , chemistry , analytical chemistry (journal) , aqueous solution , electrode , chromatography , physics
In the present study the thermodynamics of aluminium in molten Zn‐Al was determined at the temperatures 470, 490 and 520°C with the use of electrochemical sensors. Cell and sensor techniques were used. The following concentration cell was used: Al (pure reference) |Al 3+ (in fused salt) | [Al] in zinc . It was found that the activity of aluminium shows positive deviation from Raoult's law. The partial heat of solution of aluminium at temperatures between 470 and 520°C for X Al = 0.004 was determined as Δ H ¯ Al M= 21882 J. The dilute solution of aluminium in zinc in the range of 0≤X Al ≤0.044 obeys Henry's law. The Wagner's first order interaction coefficient e Al Al was determined.