Thermodynamic properties of ternary liquid Cu-Mg-Ni alloys
Journal Article
·
· Metallurgical Transactions, B (Process Metallurgy); (United States)
- IGCAR, Tamilnadu (India). Materials Chemistry Div.
- Univ. Wien (Austria). Institut fuer Anorganische Chemie
Magnesium vapor pressures were determined over ternary Cu-Mg-Ni alloys along three isopleths with x[sub Cu]/x[sub Ni]=2.0, 1.0, and 0.5 using an isopiestic method. Data points were obtained between approximately 20 and 90 at. pct magnesium in the temperature interval from 1,050 to 1,350 K. Partial thermodynamic properties of magnesium were derived for the liquid phase, and integral Gibbs energies of formation were computed by a Gibbs-Duhem integration. The composition dependence of the activities at 1,173 K is shown for the three sections investigated. The experimental integral Gibbs energies of mixing for liquid alloys are compared with the values calculated from binary data by a geometrical formalism.
- OSTI ID:
- 7072881
- Journal Information:
- Metallurgical Transactions, B (Process Metallurgy); (United States), Journal Name: Metallurgical Transactions, B (Process Metallurgy); (United States) Vol. 25:1; ISSN MTTBCR; ISSN 0360-2141
- Country of Publication:
- United States
- Language:
- English
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