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On the Determination of Pitting Potentials by galvanostatic polarization techniques

✍ Scribed by M. Kesten; G. Sussek

Publisher
John Wiley and Sons
Year
1976
Tongue
German
Weight
419 KB
Volume
27
Category
Article
ISSN
0947-5117

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✦ Synopsis

Abstract

Various characteristic pitting potentials are defined which may be observed in a system simultaneously. Following these definitions, galvanostatic polarization techniques are expected to result in potential oszillations whenever the pit nucleation potential, U~np~, differs from the critical potential for pit repassivation, U~cp~, of a system.

With nickel polarized in neutral, chloride containing sulphate solution the electrode potential oscillates periodically. The lower limit responds to the critical potential, U~cp~, determined by potentiostatic measurements.

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