Corrosion Behavior of TP2 Red Copper in Simulated Organic Acids Containing Industrial Environments
With excellent electrical and thermal conductivity,TP2 copper has a wide range of applica-tions in industrial production process.During the practical production process,a large amount of organic acid pollutants containing carboxylic acid ions will be generated.Meanwhile,as a result of the defects of TP2 copper and the impact of moisture and corrosive media in the external environment,the content of or-ganic acid pollutants in operating ambient of TP2 copper is at the high level,which may accelerate the oc-currence of organic acid corrosion on the surface of TP2 copper.In order to simulate the organic acids in-duced corrosion behavior of TP2 copper in industrial environments,the TP2 copper was assessed via im-mersion tests in solutions with different organic acid concentrations temperature-cyclically,by means of measurements of mass loss Tafel polarization and electrochemical impedance,as well as SEM character-ization.The results show that in comparison to the acetic acid containing atmosphere,TP2 copper exhibits stronger corrosion tendency in the formic acid containing ones,while the higher the organic acid concentra-tion,the much severe the corrosion of the TP2 copper.In addition,the combination of the organic acid con-taining atmosphere and SO2 pollutants may cause much severe corrosion damage of the TP2 copper sur-face,and the higher content of the SO2 pollutants,the severe the corrosive conditions.Besides,much se-vere corrosion and complexity of the corrosion behavior emerged on the surface of the TP2 copper in the atmosphere of co-existance of SO2 pollutants and with formic acid rather than that with acedic acid.
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