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organic and inorganic corrosion inhibitors to the environment has provoked the search .... Polarization studies indicated that inhibitors are acted as mixed type.
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Jul 26, 2014 - Structure Under Simulated Field Service Environment. L. Shi, J. Ye ... To guide the scientific applications of organic corrosion inhibitors, China is carrying .... carbon steel were used in this study. ..... reinforcement rust efficien
Dec 19, 2017 - Keywords: protein tyrosine phosphatases; PTP; vanadium; oxidovanadium; oxovanadium; vanadate; ... tyrosine kinases. Candidate inhibitor molecules that mimic substrates by competing for active site binding are thus usually charged or po
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Corrosion is controlled by anodic (passivating) inhibitors including nitrate and chromate as well as by cathodic (e.g., zinc salt) inhibitors. Organic inhibitors (e.g., benzotriazole) are sometimes used as secondary inhibitors, especially when excess
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... and afforded the title compound as a crystalline solid. Elemental analysis: calculated for C12H10N2O2: C 67.28, H 4.71, N 13.08%; found: C 67.16, H 4.66, N.
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VI NACE Mexican Section Corrosion Congress
ORGANIC COMPOUNDS AS CORROSION INHIBITORS FOR CARBON STEEL IN SOUR ENVIRONMENT LIKE NACE TM 0177 Esparza Zúñiga B.1, Veloz Rodríguez M. A., Esparza- Zúñiga E.1, Reyes Cruz V.E.1 , Martínez Palou R.2 ,Vázquez García R.A.1 1
Universidad Autónoma del Estado de Hidalgo, Área Académica de Materiales y Metalurgia. Carr. Pachuca Tulancingo Km 4.5, Ciudad Universitaria, Pachuca, Hgo. [email protected] 2 Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas # 152, México, D.F.
In this work, the results obtained from the electrochemical evaluation of four organic compounds with corrosion inhibiting properties, are presented. Such compounds were tested on carbon steel SAE1018 immersed in a solution like NACE TM 0177 without and with H2S. Evaluation of the compounds was carried out using the linear polarization and polarization curves. Also, the stirring effect was evaluated using a rotatory disk electrode and a 1000-rpm rotation speed. Some of the compounds evaluated showed low efficiency in absence of H2S but, this last increased when the H2S was added. On the other hand, stirring provoked that the corrosion products film formed with some compounds, was dissolved, leading the metallic surface exposed again to the corrosive environment. One of the compounds that had better results was the 2-Piridin-2-yl-1H-benzimidazole, which showed good efficiency in the system with H2S and stirring.