[논문]Comparative analysis for the corrosion susceptibility of copper alloys in sandy soil

Galai, Mouhsine; Benqlilou, Hanane; Touhami, Mohamed Ebn; Belhaj, Tounsi; Berrami, Khalifa; El Kafssaoui, Hassan

doi:10.4491/eer.2017.077

Comparative analysis for the corrosion susceptibility of copper alloys in sandy soil 원문보기

Environmental engineering research, v.23 no.2, 2018년, pp.164 - 174

Galai, Mouhsine (Laboratory of Materials Engineering and Environment: Modeling and Application, Faculty of Science, Ibn Tofail University) , Benqlilou, Hanane (International Institute for Water and Sanitation (IEA), National office of Electricity and the Potable Water) , Touhami, Mohamed Ebn (Laboratory of Materials Engineering and Environment: Modeling and Application, Faculty of Science, Ibn Tofail University) , Belhaj, Tounsi (International Institute for Water and Sanitation (IEA), National office of Electricity and the Potable Water) , Berrami, Khalifa (International Institute for Water and Sanitation (IEA), National office of Electricity and the Potable Water) , El Kafssaoui, Hassan (Laboratory of Materials Engineering and Environment: Modeling and Application, Faculty of Science, Ibn Tofail University)

Abstract ▼ AI-Helper

Corrosion of copper alloys (copper, bronze and brass) in soil was evaluated at ambient temperature using various methods such as electrochemical impedance spectroscopy (EIS), polarization curves and Scanning Electron Microscopy (SEM) coupled with Energy Dispersive Spectroscopy microanalysis measurements. Three equivalent circuits were separately used to interpret the obtained impedance spectra. The EIS measurements indicated that the polarization resistance of all electrodes increases with increasing the immersion time. SEM showed a presence of three layers of corrosion products with various composition and morphology covering each electrode. In addition, it was found that at 20% of moisture content the $R_p$ values and the current density of all electrodes in the studied soil give the following order: copper > bronze > brass. Good consistency between the data obtained from EIS and PP measurements was observed.

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문제 정의

Therefore, our mission is to investigate the effect of soil on the corrosion behavior of three materials; copper, bronze and brass in sandy soil from Essaouira city of Morocco at ambient temperature (25 ± 2°C).

가설 설정

The study of electrochemical behavior is not sufficient to explain the degradation process. Therefore, to have a very deep understanding of degradation process, we have to connect this process to the structure and composition of the corrosion product layer which is formed on surface alloys.

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Comparative analysis for the corrosion susceptibility of copper alloys in sandy soil 원문보기

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Comparative analysis for the corrosion susceptibility of copper alloys in sandy soil 원문보기

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