ANODIC-DISSOLUTION OF METALS UNDER MASS-TRANSPORT CONTROL

Citation
Oe. Barcia et al., ANODIC-DISSOLUTION OF METALS UNDER MASS-TRANSPORT CONTROL, Electrochimica acta, 41(7-8), 1996, pp. 1385-1391
Citations number
14
Categorie Soggetti
Electrochemistry
Journal title
ISSN journal
00134686
Volume
41
Issue
7-8
Year of publication
1996
Pages
1385 - 1391
Database
ISI
SICI code
0013-4686(1996)41:7-8<1385:AOMUMC>2.0.ZU;2-X
Abstract
This paper is focussed on anodic dissolution processes controlled by m ass transport. After the recall of the results obtained for a classic redox system, four examples are discussed: (i) iron dissolution in sul phuric acid for which a liquid layer of high visosity is formed at the interface; (ii) copper dissolution in hydrochloric acid and (iii) in phosphate acid, where in both solutions a solid salt layer is existing at the electrode surface; and (iv) nickel dissolution in sulphate aci d media, where a very high Schmidt number is involved in the mass tran sport. On the basis of the analysis of steady-state results and electr ohydrodynamic impedance, it is evidenced that each system needs a part icular description.