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Effect of the unsaturation of the hydrocarbon chain of fatty-amides on the CO2 corrosion of carbon steel using EIS and real-time corrosion measurement
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نویسنده
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porcayo-calderon j. ,regla i. ,vazquez-velez e. ,martinez de la escalera l.m. ,canto j. ,casales-diaz m.
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منبع
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journal of spectroscopy - 2015 - دوره : 2015 - شماره : 0
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چکیده
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Fatty-amide derivatives were evaluated to study the effect of the double bonds into the hydrocarbon chain (c18) on the corrosion behavior of carbon steel. electrochemical impedance spectroscopy (eis) and real-time corrosion measurements were used to evaluate the inhibition mechanism of the fatty-amides on carbon steel in co2-saturated (3% nacl + 10% diesel) emulsion at 50°c. eis results demonstrated that the unsaturation present into the hydrocarbon chain contributes to the efficiency of fatty-amides,because they can be adsorbed on the metal surface by a flat-adsorption process reducing the presence of active sites and blocking the corrosion process and preventing the diffusion of corrosive species,such as h2o,h+,cl-,and hc o 3 -. real-time corrosion measurements also indicated that the effectiveness of the inhibitors is dependent on the unsaturation into the hydrocarbon chain,being also a good technique to determine the stability of the adsorption process of the inhibitors. © 2015 j. porcayo-calderon et al.
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آدرس
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ciicap,universidad autonoma del estado de morelos,avenida universidad 1001,cuernavaca, Mexico, instituto de ciencias fisicas,universidad nacional autonoma de mexico,avenida universidad s/n,cuernavaca,mor,mexico,facultad de estudios superiores zaragoza,universidad nacional autonoma de mexico,avenida guelatao 66,mexico city, Mexico, instituto de ciencias fisicas,universidad nacional autonoma de mexico,avenida universidad s/n,cuernavaca, Mexico, corrosión y protección (cyp),buffon 46,mexico city, Mexico, corrosión y protección (cyp),buffon 46,mexico city, Mexico, instituto de ciencias fisicas,universidad nacional autonoma de mexico,avenida universidad s/n,cuernavaca, Mexico
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Authors
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