Electro-Chemical Behavior of Low Carbon Steel Under H2S Influence

International Conference on Innovative Research - ICIR Euroinvent 2017

Zaharia, M.G.^1 ; Stanciu, S.^1 ; Cimpoesu, R.^1 ; Nejneru, C.^1 ; Savin, C.^1 ; Manole, V.^1 ; Cimpoeu, N.^1

Technical University Gheorghe Asachi of Iasi, Faculty of Material Science and Engineering, Prof. Dr. Doc. Dimitrie Mangeron Street, number 67, Iai

700050, Romania^1

关键词: Chemical behavior;    Contaminated environment;    Energy spectroscopy;    Experimental environment;    Industrial processs;    Metallic material;    Pressure and temperature;    Transportation system;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/209/1/012050/pdf
DOI  :  10.1088/1757-899X/209/1/012050

来源: IOP

【 摘 要 】

A commercial low carbon steel material (P265GH) with application at industrial scale for natural gas delivery and transportation systems was analyzed in H2S atmosphere. The article proposed a new experimental cell in order to establish the behavior of the material in sulfur contaminated environment. In most of the industrial processes for gas purification the corrosion rate is speed up by the presence of S (sulfur) especially as ions or species like H2S. The H2S (hydrogen sulfide) is, beside a very toxic compound, a very active element in the acceleration of metallic materials deterioration especially in complex solicitations like pressure and temperature in the same time. For experiments we used a three electrodes cell with Na2SO4+ Na2S solution at pH 3 at room temperature (∼ 25 °C) to realize EIS (electrochemical impedance spectroscopy) and potentio-dynamic polarization experiments. Scanning electron microscopy and X-ray dispersive energy spectroscopy were used to characterize the metallic material surface exposed to experimental environment.