Effect of Inhibitors on the Critical Pitting Temperature of the High-Entropy Alloy Co1.5CrFeNi1.5Ti0.5Mo0.1
Authors:
- 1 January 2011
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 158 (8) , C246-C251
Abstract
The purpose of this study is to investigate the effect of inorganic/organic inhibitors on the pitting potential (Epit) and critical pitting temperature (CPT) of the high-entropy alloy Co1.5CrFeNi1.5Ti0.5Mo0.1 in chloride solutions using potentiodynamic polarization tests. The results indicate that six anions all retard the occurrence of pitting corrosion; the inhibitive effect decreases in the order: nitrates≒ benzonates>acetates≒ perchlorates>citrates>molybdates. The SEM micrographs show that perchlorates and citrates inhibit propagation of stable pits; acetates and molybdates restrain nucleation of stable pits.Keywords
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