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Model Studies on Passive Metal Electrodes by T. Hurlen; C. Simon; W. Wilhelmsen; S. Hornkjøl; E. Gulbrandsen is a Engineering article available to read on EtoBox.

What is Model Studies on Passive Metal Electrodes about?

Model studies are made on passive metal electrodes with n-type semiconducting (or insulating) passive films. Emphasis is on conditions in which such films are electronically exhausted, but not inverted. Considerations are especially made of defect production and transport in passivating oxide films and of acid-base equilibria at oxidesolution interfaces. Expectations are derived for the donor, charge and Volta potential profiles of passive metal electrodes and, hence, for their electrode potential and capacitance behaviour and for their band structure. Comparisons are made to observations on aluminium, iron, titanium, zirconium, hafnium, niobium and tantalum. Of these metals, however, only aluminium, niobium and tantalum exhibit the capacitance behaviour expected. It appears that field-dependent surface potentials (dipole layers) should be invoked, and that adsorption of other ions than protons and hydroxide ions should also be considered.

Who reads Model Studies on Passive Metal Electrodes?

Author

T. Hurlen; C. Simon; W. Wilhelmsen; S. Hornkjøl; E. Gulbrandsen

Publisher

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

Published

1989

Language

EN

Field

Engineering (Physical Sciences)