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Influence of Gamma Irradiation on a Fatty Acid Self-Assembling Coating of Copper

Marušić, Katarina; Matijaković, Nives; Mihaljević, Branka (2018) Influence of Gamma Irradiation on a Fatty Acid Self-Assembling Coating of Copper. Journal of The Electrochemical Society, 165 (16). C973-C979. ISSN 0013-4651

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Self-assembled molecules (SAMs) form layers on copper that have an advantage compared to traditional corrosion inhibitors because of the significant decrease of chemical application. The protective properties of such films can be improved by different procedures of application of the SAM layer. In this work, a SAM layer of elaidic acid, a monounsaturated long-chain fatty acid with trans geometrical configuration, was applied on copper surface. Gamma irradiation was used to improve the protective properties of the SAM layer toward corrosion in 3% NaCl. Influence of gamma irradiation on such layer’s properties was studied by different electrochemical techniques (polarization measurements, EIS), contact angle measurements and FTIR analysis. The results have shown that gamma irradiation at doses 0.5–5 kGy improves the protective properties of the SAM. The surface film became thinner due to stronger adsorption and resulted in better ordering of molecules on the surface of the oxide film although the polymerization involving the participation of oxygen molecules has been initiated by irradiation.

Item Type: Article
Uncontrolled Keywords: gamma irradiation ; crosslinking ; copper coating ; corrosion protection
Subjects: NATURAL SCIENCES > Chemistry
NATURAL SCIENCES > Chemistry > Applied Chemistry
NATURAL SCIENCES > Interdisciplinary Natural Sciences
NATURAL SCIENCES > Interdisciplinary Natural Sciences > Radiation Science
Divisions: Division of Materials Chemistry
Depositing User: Katarina Marušić
Date Deposited: 02 Jul 2019 09:55
Last Modified: 02 Jul 2019 09:55
DOI: 10.1149/2.1301814jes

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