{"title":"Corrosion Inhibition Efficiency of Metal Complex of Carboxymethylchitosan in 3.5% NaCl","authors":"V. Nayana Senan, K. S. Beena Kumari, O. Lekshmy","doi":"10.1134/S2070205124701806","DOIUrl":null,"url":null,"abstract":"<p>The effectiveness of zinc carboxymethylchitosan metal complex (ZCMC) as a copper corrosion inhibitor in 3.5% NaCl solutions was investigated using electrochemical impedance spectroscopy, Tafel extrapolation techniques and SEM/EDX. The potentiodynamic polarisation investigations demonstrate that ZCMC is a good inhibitor for copper in neutral media. In 3.5% NaCl solutions, it more significantly reduces the anodic reaction rate than the cathodic reaction rate and increases the open circuit potential of copper. This Cu(II) is generated by oxidation of the Cu(I) ion formed at the beginning of the corrosion process in the aerated solution of NaCl. SEM-EDX studies confirmed the absence of the deterioration products on the copper surface.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 3","pages":"511 - 518"},"PeriodicalIF":1.1000,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Protection of Metals and Physical Chemistry of Surfaces","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S2070205124701806","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
Abstract
The effectiveness of zinc carboxymethylchitosan metal complex (ZCMC) as a copper corrosion inhibitor in 3.5% NaCl solutions was investigated using electrochemical impedance spectroscopy, Tafel extrapolation techniques and SEM/EDX. The potentiodynamic polarisation investigations demonstrate that ZCMC is a good inhibitor for copper in neutral media. In 3.5% NaCl solutions, it more significantly reduces the anodic reaction rate than the cathodic reaction rate and increases the open circuit potential of copper. This Cu(II) is generated by oxidation of the Cu(I) ion formed at the beginning of the corrosion process in the aerated solution of NaCl. SEM-EDX studies confirmed the absence of the deterioration products on the copper surface.
期刊介绍：
Protection of Metals and Physical Chemistry of Surfaces is an international peer reviewed journal that publishes articles covering all aspects of the physical chemistry of materials and interfaces in various environments. The journal covers all related problems of modern physical chemistry and materials science, including: physicochemical processes at interfaces; adsorption phenomena; complexing from molecular and supramolecular structures at the interfaces to new substances, materials and coatings; nanoscale and nanostructured materials and coatings, composed and dispersed materials; physicochemical problems of corrosion, degradation and protection; investigation methods for surface and interface systems, processes, structures, materials and coatings. No principe restrictions exist related systems, types of processes, methods of control and study. The journal welcomes conceptual, theoretical, experimental, methodological, instrumental, environmental, and all other possible studies.
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