Abstract
The electrochemical behavior of Tc–Ru alloys (Ru content, at. %: 3.2, 5.2, 20.1, 24.7) in 1 M HNO3 was studied. The transpassivation potentials (E tp) of Tc–Ru alloys were determined by linear voltammetry. The results show that the transpassivation potentials of the alloys increase with the Ru content. To understand the dissolution mechanism, electrolysis experiments at 1.2 V vs. Ag/AgCl were performed; the corrosion products of the alloys were characterized in solution by UV-visible spectroscopy and electrospray ionization mass spectrometry (ESI-MS). For Ru, a polymeric Ru(IV) species was detected, while for Tc the speciation was dominated by TcO4 –.
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Dedicated to Dr. Sci. (Chem.) A.G. Maslennikov (1955–2016), a gifted electro- and radiochemist
Published in Russian in Radiokhimiya, 2017, Vol. 59, No. 1, pp. 39–44.
The text was submitted by the authors in English.
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Poineau, F., Koury, D.J., Bertoia, J. et al. Electrochemical studies of technetium–ruthenium alloys in HNO3: Implications for the behavior of technetium waste forms. Radiochemistry 59, 41–47 (2017). https://doi.org/10.1134/S1066362217010040
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DOI: https://doi.org/10.1134/S1066362217010040