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ASM Handbook

Corrosion: Fundamentals, Testing, and Protection

Edited by
Stephen D. Cramer
Stephen D. Cramer
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Bernard S. Covino, Jr.
Bernard S. Covino, Jr.
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ASM International
Volume
13A
ISBN electronic:
978-1-62708-182-5
Publication date:
2003
Book Chapter

Electrode Potentials

By
E. Protopopoff
E. Protopopoff
Ecole Nationale Supérieure de Chimie de Paris, Université Pierre et Marie Curie
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P. Marcus
P. Marcus
Ecole Nationale Supérieure de Chimie de Paris, Université Pierre et Marie Curie
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Published:
2003
Page range:
8 - 12
Publication history
December 01, 2003

Abstract

The electrode potential is one of the most important parameters in the thermodynamics and kinetics of corrosion. This article discusses the fundamentals of electrode potentials and illustrates the thermodynamics of chemical equilibria by using the hydrogen potential scale and the Nernst equation. It describes galvanic cell reactions and corrosion reactions in an aqueous solution in an electrochemical cell. The article explores the most common cathodic reactions encountered in metallic corrosion in aqueous systems. The reactions included are proton reduction, water reduction, reduction of dissolved oxygen, metal ion reduction, and metal deposition. The article also presents the standard equilibrium potentials measured at 25 deg C relative to a standard hydrogen electrode for various metal-ion electrodes in a tabular form.

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E. Protopopoff, P. Marcus, 2003. "Electrode Potentials", Corrosion: Fundamentals, Testing, and Protection, Stephen D. Cramer, Bernard S. Covino, Jr.

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