Abstract
The electrochemical behaviour of Pb in de-aerated 0·1-6N NaOH has been studied. The influences of concentration and stirring on the corrosion rates were investigated. It is shown that the porosity of the initially formed PbO is maximal in 2N NaOH. Under such conditions, the anodic processes: Pb → PbO, Pb → Pb(OH) 2 Pb → Pb 3S0 4, Pb → Pb0 2 and PbO → Pb0 2 are revealed by current maxima (or potential levels). The results are discussed on the basis of the dissolution-precipitation mechanism.
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