Inhibition of the Early Depassivation of -Brass in Neutral Chloride Electrolytes

M. V. Rylkina and M. V. Didik

Udmurt State University, ul. Universitetskaya 1, Izhevsk, 426034 Russia

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Received July, 14, 2005; in final form, April 13, 2006

Abstract — Sodium anthranilate (SA), sodium phenyl anthranilate (SPA), and benzotriazole (BTA) were tested as inhibitors of the early depassivation stages of 70 -brass in neutral chloride electrolytes. Although SA and SPA were found to initiate pitting corrosion at -brass, the antagonism between SA (or SPA) and Cl ions can result, at a certain ratio of their concentrations, in the inhibition of the pitting corrosion of -brass. -Brass wasbest protected from pitting by BTA.

PACS numbers: 81.65.Kn; 82.45.Pb