Evaluation of 3a-Hydroximasticadienoic Acid as a Corrosion Inhibitor for Silver in Saline Environment

The 3a-hydroxymasticadienoic compound (3-HM) was evaluated as a corrosion inhibitor in presence of chlorides using Electrochemical Impedance Spectroscopy (EIS). The results obtained showed the best concentration is 50 ppm with an inhibition efficiency of 68.4% for sterling silver. This organic molec...

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Bibliographic Details
Published in:ECS transactions 2021-01, Vol.101 (1), p.225-231
Main Authors: Espinoza Vazquez, Araceli, Moreno Cerros, Diego, Rodriguez, Francisco, Pérez Vásquez, Araceli, Mata, Rachel
Format: Article
Language:English
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Summary:The 3a-hydroxymasticadienoic compound (3-HM) was evaluated as a corrosion inhibitor in presence of chlorides using Electrochemical Impedance Spectroscopy (EIS). The results obtained showed the best concentration is 50 ppm with an inhibition efficiency of 68.4% for sterling silver. This organic molecule exhibits anodic-like behavior as an inhibitor. 3-HM acid inhibition is maintained up to 480 hours with 88.86% efficiency. Finally, the type of adsorption is of the combined type according to the Langmuir model.
ISSN:1938-5862
1938-6737
DOI:10.1149/10101.0225ecst