Diffusivity, activity and solubility of oxygen in liquid lead and lead-bismuth eutectic alloy by electrochemical methods
DSpace at IIT Bombay
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Title |
Diffusivity, activity and solubility of oxygen in liquid lead and lead-bismuth eutectic alloy by electrochemical methods
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Creator |
GANESAN, R
GNANASEKARAN, T SRINIVASA, RS |
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Subject |
wide temperature-range
gibbs free-energy emf-measurements molten lead pb-bi thermodynamics system sb antimony kinetics |
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Description |
The diffusivity of oxygen in liquid lead and lead-bismuth eutectic (LBE) alloy was measured by a potentiostatic method and is given by log(D-O(Pb)/cm(2) s(-1)) = -2.554 - 2384/T (+/- 0.070) 818-1061 K, and log(D-O(LBE)/cm(2) s(-1)) = -0.813- 3612/T (+/- 0.091), 811-980 K. The activity of oxygen in lead and LBE was determined by coulometric titration experiments. Using the measured data, the standard free energy of dissolution of oxygen in liquid lead and LBE was derived and is given by G(O(Pb))(XS) = -121349 + 16.906T (+/- 560)J(g atom O)(-1), 815-1090 K, G(O(LBE))(xs) = -127398 + 27.938T (+/- 717)J(g atom O)(-1), 812-1012 K. Using the above data, the Gibbs energy of formation of PbO(s) and equilibrium oxygen pressures measured over the oxygen-saturated LBE alloy, the solubility of oxygen in liquid lead and LBE were derived. The solubility of oxygen in liquid lead and LBE are given by log(S/at.%O) = -51001T + 4.32 (+/- 0.04) 815-1090 K and log(S/at.%O) = -4287/T + 3.53 (+/- 0.06), 812-1012 K respectively. (c) 2005
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Publisher |
ELSEVIER SCIENCE BV
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Date |
2011-07-24T18:07:33Z
2011-12-26T12:47:34Z 2011-12-27T05:36:35Z 2011-07-24T18:07:33Z 2011-12-26T12:47:34Z 2011-12-27T05:36:35Z 2006 |
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Type |
Article
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Identifier |
JOURNAL OF NUCLEAR MATERIALS, 349(1-2), 133-149
0022-3115 http://dx.doi.org/10.1016/j.jnucmat.2005.10.006 http://dspace.library.iitb.ac.in/xmlui/handle/10054/6500 http://hdl.handle.net/10054/6500 |
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Language |
en
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