|Autors: Tzaneva, B. R., Petrova T.M., Hristov J., Fachikov L.B.|
Title: Electrochemical investigation of cementation process
Keywords: copper cementation, mixed potential, potentiodinamic
Abstract: Cementation of metals is a spontaneous electrochemical reaction at the interface of an active metal and the electrolyte containing ions of more noble metal. In this work the electrochemical behaviour of the redox couples was studied experimentally with a special emphasis the mixed cementation potential compared to the potentials of the individual couples at open circuit state. This approach allows determining the values of both the anodic and cathodic polarisations but not the reaction kinetics. The potentiodynamic method separately applied to the iron and the copper electrodes was used to elucidate the nature of the kinetics of the half-reactions of the electrodes. The intersection of the anodic branch of the polarisation curve of the iron electrode with the cathodic one of the copper electrode corresponds to the rate of copper deposition at the iron surface, represented indirectly by the deposition current density. The determined corrosion potentials, however, are more positive ..
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Вид: статия в списание, публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus
Въведена от: доц. д-р Боряна Рангелова Цанева