Abstract
Corrosion behaviour of pure aluminium galvanically connected to metallic copper or in the presence of Cu 2+ ions was investigated by electrochemical measurements in Na 2SO 4 and Na 2SO 4 + NaCl test solutions. It has been found that in aerated Cl − ion containing solutions pitting corrosion of aluminium emerged immediately, while in the absence of oxygen this process was less violent. Effect of passivating pre-treatment of aluminium surface on corrosion behaviour Cu–Al bimetallic system is also demonstrated.
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