Abstract
The temperature dependence of the thermodynamic properties of V, in Pt-V alloy, was investigated in this study. A Pt strip was equilibrated with V2O3 powder, under controlled oxygen partial pressure and temperature. The mole fraction of V in the sample was measured with an electron probe micro-analyzer, and the activity coefficient of V was determined as a function of temperature and composition. With increasing temperature, the activity coefficient of V (γV) increased. The activity coefficient at infinite dilution (γVo) increased and the interaction parameter (εVV) decreased with rising temperature. The excess Gibbs energy value for the fcc phase Pt-V alloy was strongly negative.
Original language | English |
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Pages (from-to) | 967-971 |
Number of pages | 5 |
Journal | Journal of Alloys and Compounds |
Volume | 788 |
DOIs | |
Publication status | Published - 2019 Jun 5 |
Keywords
- Activity coefficient
- Excess Gibbs energy
- Pt-V alloy
- Thermodynamics
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry