journal article·2016-06Open access

Theoretical assessment of bonaccordite formation in pressurized water reactors

Zs Rak, C.J. O'Brien, D. Shin, A.D. Andersson, C.R. Stanek, D.W. Brenner

Abstract

Abstract The free energy of formation of bonaccordite (Ni2FeBO5) as a function of temperature has been calculated using a technique that combines first principles calculations with experimental free energies of formation of aqueous species. The results suggest that bonaccordite formation from aqueous metal ions (Ni2+ andFe3+) and boric acid is thermodynamically favorable at elevated temperature and pH that have been predicted to exist at the CRUD-clad interface in deposits thicker than 60 μm.
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Research context

OpenAlex topics: Iron oxide chemistry and applications · Nuclear materials and radiation effects · Electronic and Structural Properties of Oxides

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