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Corrosion Inhibition of AISI 316L and Modified-AISI 630 Stainless Steel by the New Organic Inhibitor [(CH3)2N]3PSe in Chloride Media:Electrochemical and Physical Study

Yafa ZARGOUNI, Wafa SASSI, Khaled ALOUANI

Abstract


We evaluate the effect of the Tris-dimethylaminoselenophosphoramide (SeAP)on the corrosion inhibition of modified-AISI 630 and AISI 316L stainless steel (SS) in 3 wt. % NaCl. The electrochemical behaviors of tested SS samples are investigated before and after adding the Seep into the chloride media by potentiodynamic polarization technique. The adsorption of SeAP onto both SS surfaces is verified by global discharge optical emission spectroscopy (GDOES).  SeAP is found to be a good inhibitor for SS corrosion, especially when added at a concentration of 0.5 wt. %.

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DOI: http://dx.doi.org/10.13171/mjc.4.2.2015.21.04.12.05/alouani

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