Expired Domestic Drug - Paracetamol - as Corrosion Inhibitor for Carbon Steel in Acid Media

7th International Conference on Advanced Materials and Structures

Duca, D.A.^1 ; Dan, M.L.^1 ; Vaszilcsin, N.^1

Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timioara, Romania^1

关键词: Acid solutions;    Corrosion process;    Corrosive media;    Electrochemical behaviour;    Inhibitory effect;    Linear polarization;    Tafel plots;    Test solutions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/416/1/012043/pdf
DOI  :  10.1088/1757-899X/416/1/012043

来源: IOP

【 摘 要 】

In this paper, the possibility to use expired drug paracetamol as corrosion inhibitor for carbon steel in acid solutions has been investigated. 0.5 mol L-1 sulfuric acid and 1 mol L-1 hydrochloric acid have been used as corrosive media in the experimental studies. Electrochemical behaviour of paracetamol and its stability in test solutions have been examined by cyclic voltammetry. Further, the inhibitory effect has been studied by several methods: linear polarization, electrochemical impedance spectroscopy and chronoamperometry. As well, Tafel plots method was used in order to determine kinetic parameters of the corrosion process.