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 V 2 O 3 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 (γ V ) increased. The activity coefficient at infinite dilution (γ V o ) increased and the interaction parameter (ε V V ) decreased with rising temperature. The excess Gibbs energy value for the fcc phase Pt-V alloy was strongly negative.
| Original language | English |
|---|---|
| Pages (from-to) | 967-971 |
| Number of pages | 5 |
| Journal | Journal of Alloys and Compounds |
| Volume | 788 |
| DOIs | |
| Publication status | Published - 2019 Jun 5 |
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Keywords
- Activity coefficient
- Excess Gibbs energy
- Pt-V alloy
- Thermodynamics
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
Cite this
Vanadium activity measurement in fcc phase Pt-V alloy. / Park, Dong Hwi; Jeong, Ji Seok; Shim, Sang Chul; Lee, Joonho.
In: Journal of Alloys and Compounds, Vol. 788, 05.06.2019, p. 967-971.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Vanadium activity measurement in fcc phase Pt-V alloy
AU - Park, Dong Hwi
AU - Jeong, Ji Seok
AU - Shim, Sang Chul
AU - Lee, Joonho
PY - 2019/6/5
Y1 - 2019/6/5
N2 - The temperature dependence of the thermodynamic properties of V, in Pt-V alloy, was investigated in this study. A Pt strip was equilibrated with V 2 O 3 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 (γ V ) increased. The activity coefficient at infinite dilution (γ V o ) increased and the interaction parameter (ε V V ) decreased with rising temperature. The excess Gibbs energy value for the fcc phase Pt-V alloy was strongly negative.
AB - The temperature dependence of the thermodynamic properties of V, in Pt-V alloy, was investigated in this study. A Pt strip was equilibrated with V 2 O 3 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 (γ V ) increased. The activity coefficient at infinite dilution (γ V o ) increased and the interaction parameter (ε V V ) decreased with rising temperature. The excess Gibbs energy value for the fcc phase Pt-V alloy was strongly negative.
KW - Activity coefficient
KW - Excess Gibbs energy
KW - Pt-V alloy
KW - Thermodynamics
UR - http://www.scopus.com/inward/record.url?scp=85062418024&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85062418024&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2019.02.313
DO - 10.1016/j.jallcom.2019.02.313
M3 - Article
AN - SCOPUS:85062418024
VL - 788
SP - 967
EP - 971
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -