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논문 기본 정보

자료유형
학술저널
저자정보
Mervate Mohamed Mohamed (Najran University) Raiedhah Alsaiari (Najran University) Fatima A. Al-Qadri (Sana'a University) Iman Mohammad Shedaiwa (Sana'a University) Mabkhoot Alsaiari (Najran University) Esraa Mohamed Musa (Central Veterinary Research Labrotary) Faeza Alkorbi (Najran University) Ali S. Alkorbi (Najran University)
저널정보
한국부식방식학회 Corrosion Science and Technology CORROSION SCIENCE AND TECHNOLOGY 제21권 제5호
발행연도
2022.10
수록면
381 - 389 (9page)
DOI
10.14773/cst.2022.21.5.381

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초록· 키워드

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Cyclic Voltammetry and weight loss measurements were used to investigate corrosion prevention of tin in a 0.5M citric acid solution containing Anthocyanins extracted from grapes at various concentrations and temperatures. Results showed that the investigated chemicals, Anthocyanins extracted from grapes, performed well as tin corrosion inhibitors in 0.5M citric acid. Increasing the concentration of Anthocyanins increased their corrosion inhibition efficiencies. When the temperature dropped, their inhibition efficiencies, increased indicating that higher temperature tin dissolution predominated the adsorption of Anthocyanins at the surface of tin metal. When inhibitor concentrations were increased, their inhibition efficiencies were also increased. These results revealed that corrosion of tin metal was inhibited by a mixed type of adsorption on the metal surface. The adsorption isotherm of Langmuir governed the adsorption of Anthocyanins. Thermodynamic parameters such as the enthalpy of adsorption, the entropy of adsorption, and Gibbs free energy and kinetic parameters such as activation energy, enthalpy of activation, and entropy of activation were computed and discussed in this study.

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