Abstract
The electrochemical behavior of nickel in water-methanol-acid solutions has been investigated; the concentration of the three constituents of the solution have been extensively varied. The mechanisms of Ni dissolution and passivation seem to be the same as in water solution; the previously proposed model is well satisfied by the experimental results. Methanol seems to act as an inhibitor of the free corrosion of nickel, while water is the main passivating agent. Both active corrosion and passivation are diffusion controlled reactions: their rates in the presence of small amounts of water, are lowered.
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