TY - JOUR
T1 - Thermodynamic Properties of Barium-Antimony Alloys Determined by Emf Measurements
AU - Lichtenstein, Timothy
AU - Gesualdi, Jarrod
AU - Nigl, Thomas P.
AU - Yu, Chen Ta
AU - Kim, Hojong
N1 - Funding Information:
The authors would like to thank Austin Ross for useful discussions about phase behavior. The financial support of the US Department of Energy , Office of Nuclear Energy’s Nuclear Energy University Programs (Award No. DE-NE0008425 ) and Integrated University Program Graduate Fellowship (Award No. DE-NE0000113 ) are gratefully acknowledged. This work was partially supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20142020104190 ).
Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017/10/10
Y1 - 2017/10/10
N2 - The thermodynamic properties of Ba-Sb alloys, including the activity, partial molar entropy, and partial molar enthalpy, were determined using the electromotive force (emf) technique for thirteen compositions spanning the composition range of xBa = 0.03–0.77. Emf measurements were performed at ambient pressure under an inert argon atmosphere using a Ba-Bi(xBa = 0.05)|CaF2-BaF2|Ba(in Sb) electrochemical cell at 723–1073 K. At 923 K, activity values of Ba in Sb were as low as 2.0 × 10−15 at mole fraction xBa = 0.05 and approached unity for mole fractions xBa ≥ 0.77. Phase characterization using X-ray diffraction (XRD) was performed on compositions of xBa = 0.03–0.77 and thermal characterization was performed on compositions up to xBa = 0.40 using differential scanning calorimetry (DSC). Integrating the results from emf, XRD, and DSC measurements, an experimentally determined Ba-Sb phase diagram was constructed.
AB - The thermodynamic properties of Ba-Sb alloys, including the activity, partial molar entropy, and partial molar enthalpy, were determined using the electromotive force (emf) technique for thirteen compositions spanning the composition range of xBa = 0.03–0.77. Emf measurements were performed at ambient pressure under an inert argon atmosphere using a Ba-Bi(xBa = 0.05)|CaF2-BaF2|Ba(in Sb) electrochemical cell at 723–1073 K. At 923 K, activity values of Ba in Sb were as low as 2.0 × 10−15 at mole fraction xBa = 0.05 and approached unity for mole fractions xBa ≥ 0.77. Phase characterization using X-ray diffraction (XRD) was performed on compositions of xBa = 0.03–0.77 and thermal characterization was performed on compositions up to xBa = 0.40 using differential scanning calorimetry (DSC). Integrating the results from emf, XRD, and DSC measurements, an experimentally determined Ba-Sb phase diagram was constructed.
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U2 - 10.1016/j.electacta.2017.07.113
DO - 10.1016/j.electacta.2017.07.113
M3 - Article
AN - SCOPUS:85029445621
SN - 0013-4686
VL - 251
SP - 203
EP - 211
JO - Electrochimica Acta
JF - Electrochimica Acta
ER -