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The Kinetics of iron dissolution and passivation

✍ Scribed by J. Bessone; L. Karakaya; P. Lorbeer; W.J. Lorenz

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
744 KB
Volume
22
Category
Article
ISSN
0013-4686

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✦ Synopsis

AhstraceThe anodic behaviour of pure, recrystallized iron in acid sulphate and perchlorate solutions free of oxygen and surface active substances was investigated in the potential range between the active and passive stzite. The measurements were carried out using an iron rotating disk electrode by cyclic voltammetry under quasi-steady-state conditions with compensation of the ohmic drop. The determined kinetic data confirm mainly the previously proposed dissolution mechanism. The shortened form of this mechanism is Fe + (FeOH),,, + Fe[Fe(OH),],,, Z$ [Fe(OH)& ti rFe, O,, Fe, 0, 1 1 FeOH+ FeOH+ + (FeOHA,, The iron dissolution kinetics was found to be independent of the anion concentration in the overall potential range. New results with regard to the passivation and reactivation potentials of the metal &e discussedr 1. INTBODUCTION

πŸ“œ SIMILAR VOLUMES

A theoretical treatment of the kinetics
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