Zairyo-to-Kankyo
Online ISSN : 1881-9664
Print ISSN : 0917-0480
ISSN-L : 0917-0480
Action of Metallic Corrosion Inhibitors and the Hard and Soft Acids and Bases Principle
Kunitsugu Aramaki
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1996 Volume 45 Issue 11 Pages 674-681

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Abstract

Chemical adsorption and the corrosion inhibition effect of inhibitors on metals and oxidized metals are closely related to the hard and soft acids and bases principle. A stable adsorption bond forms between the metal surface acting as a soft acid and an inhibitor classified as a soft base, resulting in a high inhibition effect on metallic corrosion. An inhibitor of a hard base is adsorbed on the oxidized metal surface acting as a hard acid without difficulty.

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© Japan Society of Corrosion Engineering
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