کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1569973 1514271 2006 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Diffusivity, activity and solubility of oxygen in liquid lead and lead–bismuth eutectic alloy by electrochemical methods
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
Diffusivity, activity and solubility of oxygen in liquid lead and lead–bismuth eutectic alloy by electrochemical methods
چکیده انگلیسی

The diffusivity of oxygen in liquid lead and lead–bismuth eutectic (LBE) alloy was measured by a potentiostatic method and is given by log(DOPb/cm2s-1)=-2.554-2384/T(±0.070), 818–1061 K, and log(DOLBE/cm2s-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 byGO(Pb)xs=-121349+16.906T(±560)J(gatomO)-1,815–1090K,GO(LBE)xs=-127398+27.938T(±717)J(gatomO)-1,812–1012K.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) = −5100/T + 4.32 (±0.04), 815–1090 K and log(S/at.%O) = −4287/T + 3.53 (±0.06), 812–1012 K respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 349, Issues 1–2, 15 February 2006, Pages 133–149
نویسندگان
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