Some factors determining the rates of electrochemical dissolution-deposition reactions on metallic surfaces
β Scribed by Ashok K. Vijh; J.P. Randin
- Publisher
- Elsevier Science
- Year
- 1977
- Weight
- 714 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0376-4583
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## Abstract Depending on etching, iron in chloride or sulphate solutions and in some degree copper in perchlorate solution can be made to follow one or the other of two clearly different dissolution behaviours. This is attributed to the establishment of two alternative states of the metal surface.
Under conditions, where two anodic current regions, I, and I,, were distinct in the Tafel plots of the iron electrode, the reaction orders with respect to pH were determined. rn solutions containing chloride or bromide, pH cu 3-5, the reaction order for I,(p,,,,) was close to I. while that for IL(pz