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Thermochemistry of binary liquid gold alloys: the systems (Au + Cr), (Au + V), (Au + Ti), and (Au + Sc) at 1379 K

Journal Article · · Metall. Trans., A; (United States)
DOI:https://doi.org/10.1007/BF02656716· OSTI ID:6344234
This paper reports enthalpy of mixing information for the liquid alloys of gold with scandium, titanium, vanadium, and chromium at 1379 K. The results are compared with corresponding information for the alloys of gold with manganese, iron, cobalt, and nickel, with data for the liquid alloys of the first row transition metals with copper, and with the predictions provided by the semi-empirical theory of Miedema et al. For Sc, Ti, and V the experimental values are 75 to 100 kJ mol/sup -//sub 1/ less exothermic than predicted by Miedema. A comparison of the emf data of Eremenko et al. for the soli solutions of V and Cr in gold allows us to make estimates of the excess entropies of solution of these two metals in liquid gold. The values are positive, but numerically smaller than for the same metals in copper. The possible significance of this difference is discussed.
Research Organization:
University of Chicago, Chicago, IL
OSTI ID:
6344234
Journal Information:
Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 16A:1; ISSN MTTAB
Country of Publication:
United States
Language:
English