Metallurgical Transactions A

, Volume 16, Issue 1, pp 93–99 | Cite as

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

  • O. J. Kleppa
  • Letitia Topor
Physical Chemistry
Received:

Abstract

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 Miedemaet al. For Sc, Ti, and V the experimental values are 75 to 100 kJ mol−1 less exothermic than predicted by Miedema. A comparison of the emf data of Eremenkoet al. for the solid 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.

Keywords

Enthalpy Metallurgical Transaction Scandium Liquid Alloy Excess Entropy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© The Metallurgical Society of American Institute of Mining 1985

Authors and Affiliations

  • O. J. Kleppa
    • 1
  • Letitia Topor
    • 1
  1. 1.James Franck InstituteUniversity of ChicagoChicago

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