Anodic dissolution of Tc metal in HNO solutions.

Autor:	Rotmanov, K., Maslennikov, A., Zakharova, L., Goncharenko, Yu., Peretrukhin, V.
Předmět:	TECHNETIUM CORROSION & anti-corrosives DISSOLUTION (Chemistry) OXIDATION-reduction reaction ELECTROLYSIS CURRENT density (Electromagnetism) SCANNING electron microscopy
Zdroj:	Radiochemistry; Jan2015, Vol. 57 Issue 1, p26-30, 5p
Abstrakt:	Corrosion and dissolution of Tc metal in 0.5-6.0 M HNO without external sources of the redox potential and under the conditions of constant-current electrolysis were studied. The dissolution rates of Tc metal without external potential in relation to the HNO concentration and the rates of anodic dissolution of Tc in relation to the anodic current density and HNO concentration were determined. The Tc(VII) current efficiencies in 0.5-6.0 M HNO solutions were measured. The anodic dissolution of Tc is characterized by the linear growth of the concentration of the dissolved Tc species in solution with time. Examination of the sample surfaces by scanning electron microscopy allows a conclusion that the corrosion degradation has intercrystallite character. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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