J Mater Sci Technol ›› 2002, Vol. 18 ›› Issue (02): 167-170.

• Research Articles • Previous Articles     Next Articles

Enthalpy of Mixing of Liquid Al-Cr and Cr-Ni Alloys

P.Saltykov, V.T.Witusiewicz, I.Arpshofen, H.J.Seifert, F.Aldinger   

  1. Max-Planck-Institut für Metallforschung and Universität Stuttgart, Institut für Nichtmetallische Anorganische Materialien, Pulvermetallurgisches Laboratorium, Heisenbbergstr. 5, D-70569 Stuttgart Germany
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-03-28 Published:2009-10-10
  • Contact: P.Saltykov

Abstract: The partial and the integral enthalpies of mixing of liquid Al-Cr and Ni-Cr binary alloys have been determined by high temperature isoperibolic calorimetry at 1723± 5 K and 1729±5 K, respectively. The results were analytically described by the thermodynamically adapted power series (TAPS). The enthalpies of mixing values for both binary liquid melts are small and negative and in good agreement with the available literature data. Minima of the mixing enthalpies of liquid Al-Cr and Ni-Cr alloys are -7.0 kJ.mol-1 at 46 at. pct Cr and -3.0 kJ. mol-1 at 37 at. pct Cr, respectively.

Key words: Al-Cr, Cr-Ni, Liquid alloys, Enthalpy of mixing, Isoperibolic calorimetry