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Growth of Passive Layers on Iron and Nickel by I.A. Ammar; S. Darwish is a Engineering article available to read on EtoBox.

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Galvanostatic polarization has been performed on passive iron and nickel in the range of constant current density. Two techniques have been employed (i) successive polarization measurements are made without interruption, (ii) the stationary state is established between each two galvanostatic readings. In each case, the E/log i lines show no tendency of intersection at the Flade potential. The same conclusions have been reached from the dependence on potential of the'amount of electricity absorbed during growth of the oxide. Attempts to fit the results within the framework of the oxide theory of passivity throws some doubt on the signitlcance previously ascribed to the Flade potential. The nearly parallel displacement of the E/log i lines is explained as due to the increase of the width of the energy barrier for ionic transport with increase of oxide thickness. R&u&-On a real% la polarisation galvanostatique sur le fer et le nickel passifs dans un domaine de densite de courant constante. On a employ& deux techniques: (i) execution sans interruption de mesures de polarisation successives, (ii) etablissement de l'etat stationnaire entre deux lectures galvanostatiques. Dans chaque cas,

Who reads Growth of Passive Layers on Iron and Nickel?

Author

I.A. Ammar; S. Darwish

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0013-4686)

Published

1967

Language

EN

Field

Engineering (Physical Sciences)