ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Corrosion of cobalt in the molten sodium sulfate-sodium chloride system

B. Tomik, J. Leško, J. Tržil, and J. Ullrych

Min.-Metall. Inst., Ostrava

Abstract: The equiv. elec. cond. and the emf. of a concn. galvanic cell with O electrodes and solid electrolyte in the molten Na₂SO₄-NaCl system was investigated. The corrosion of Co was measured by the gravimetric method. The results of the measurement of the elec. cond. indicate that the given system differs only slightly from theor. Markov model over the whole concn. range. The emf. method showed that the addn. of NaCl increases the activity of O^2-. The gravimetric investigation of the corrosion of Co at 910° showed that the addn. of NaCl decreases the corrosion over the whole concn. range. The dependence of the corrosion on the compn. of the melt does not have a monotonic course, but there is a max. on the corresponding curve in the region of the max. of the activity of O^2- anions.

Full paper in Portable Document Format: 311a17.pdf (in Russian)

Chemical Papers 31 (1) 17–22 (1977)