The Solubility of Nickel in Sodium Calculated from Corrosion Tests in Flowing Liquid Metal
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Hans Ulrich Borgstedt
Abstract
The solubility of nickel in liquid sodium in the temperature range 773 to 873 K was calculated from corrosion results which were obtained in dynamic non-isothermal corrosion loops. The flow conditions at the nickel specimens were turbulent, and the flowing sodium was of very high purity. The saturation concentrations of Ni and Fe in Na were deduced from the corrosion results using a hydraulic model which relates the corrosion rates to the saturation concentrations of the solid metal in the liquid phase. The calculations resulted in solubilities of Ni in the range of 2.8 · 10−6 < csat < 7.6 · 10−5 mol % in the temperature range. The solubility of iron in sodium and its temperature gradient was found to be much lower. The free energy of solution of nickel in sodium, ΔHsol = – 185 kJ · mol−1, is higher in this work than in the literature.
Abstract
Die Löslichkeit von Nickel in flüssigem Natrium im Temperaturbereich 773 bis 873 K wurde aus Ergebnissen von Korrosionsversuchen, die in einem dynamischen, nichtisothermen Korrosionskreislauf erhalten wurden, berechnet. Die Strömungsbedingungen an den Nickelproben waren turbulent, und das strömende Natrium war von hoher Reinheit. Die Sӓttigungskonzentrationen von Ni in Na wurden von den Korrosionsergebnissen abgeleitet unter Benutzung eines hydraulischen Modells, das Korrosionsgeschwindigkeiten zu Sӓttigungskonzentrationen des festen Metalls in der flüssigen Phase in Beziehung setzt. Die Rechnungen ergaben im angegebenen Temperaturbereich Löslichkeiten von Ni von 2.8 · 10−6 < csat < 7.6 ··10−5 mol %. Die Löslichkeit von Eisen in Natrium und ihr Temperaturkoeffizient wurden viel niedriger gefunden. Die freie Lösungsenergie des Nickels in Natrium, ΔHsol = –185 kJ · mol−1, ist in dieser Arbeit höher als in der Literatur.
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The author gratefully acknowledges the helpful discussions with Dr. C. Guminski, University of Warsaw, on the diffusion phenomena in liquid metals and the encouragement through the IUPAC Commission V8 in the work of compiling the solubility of metals in liquid metals. The experiments were performed with the aid of Mrs. Z. Voss and Mr. G. Frees, Forschungszentrum Karlsruhe, to whom sincere thanks are expressed.
Literature
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© 1998 Carl Hanser Verlag, München
Artikel in diesem Heft
- Frontmatter
- Aufsätze
- Thermal Analysis of Solid State Amorphization: Predicted and Measured Reaction Enthalpies and Reaction Kinetics
- Precipitation Trends in Highly Alloyed Austenitic Stainless Steels
- Condensed Phase Equilibria in the Mo-Ga-N System at 800 °C
- Interdiffusion in the β Mo–Ti Solid Solution at High Temperatures
- Nitride Phase Equilibria in the Fe–Cr–Mn–N System at 1273 and 1073 K
- The Solubility of Nickel in Sodium Calculated from Corrosion Tests in Flowing Liquid Metal
- Influence of Heterogeneous Dislocation Arrangements on X-ray Diffraction Profiles Measured on Cyclically Deformed Nickel Single Crystals
- Change of Crystal Orientation in Straining and Dislocation Glide Systems
- On the High Temperature Creep Behavior of Two Rapidly Solidified Dispersion Strengthened Al–Fe–V–Si Materials
- Kinetics of Ferrite to Austenite Transformation in a High Strength Low Alloy Steel Containing Nb
- Mechanical Alloying of Zn-rich Zn–Al–Cu Alloys
- Mitteilungen der Deutschen Gesellschaft für Materialkunde e.V.
- Personen
- Terminkalender
Artikel in diesem Heft
- Frontmatter
- Aufsätze
- Thermal Analysis of Solid State Amorphization: Predicted and Measured Reaction Enthalpies and Reaction Kinetics
- Precipitation Trends in Highly Alloyed Austenitic Stainless Steels
- Condensed Phase Equilibria in the Mo-Ga-N System at 800 °C
- Interdiffusion in the β Mo–Ti Solid Solution at High Temperatures
- Nitride Phase Equilibria in the Fe–Cr–Mn–N System at 1273 and 1073 K
- The Solubility of Nickel in Sodium Calculated from Corrosion Tests in Flowing Liquid Metal
- Influence of Heterogeneous Dislocation Arrangements on X-ray Diffraction Profiles Measured on Cyclically Deformed Nickel Single Crystals
- Change of Crystal Orientation in Straining and Dislocation Glide Systems
- On the High Temperature Creep Behavior of Two Rapidly Solidified Dispersion Strengthened Al–Fe–V–Si Materials
- Kinetics of Ferrite to Austenite Transformation in a High Strength Low Alloy Steel Containing Nb
- Mechanical Alloying of Zn-rich Zn–Al–Cu Alloys
- Mitteilungen der Deutschen Gesellschaft für Materialkunde e.V.
- Personen
- Terminkalender
