In this work, the synthesis of reduced graphene oxide (rGO) and its incorporation into a hybrid organic-inorganic matrix is reported. The hybrid matrix was obtained from Bisphenol A diglycidyl Ether (DGEBA) and tetraethylorthosilicate (TEOS) as the organic and inorganic phase, respectively, up to have an optimal hybrid matrix (HYBRID) having both good adherence on steel surface and good microhardness. In addition, the rGO was added to HYBRID (HGO). DGEBA, HYBRID and HGO were used as coatings on the surface of different 1018 carbon steel coupons. The coupons were immersed in a H2SO4 solution, then electrochemistry impedance spectroscopy (EIS) measurements were carried out. The corrosion current density, the corrosion rates, and the inhibition efficiency were estimated. The results show that the addition of rGO to HYBRID contributes to obtain a coating with good corrosion protective properties.
Bibliographical noteFunding Information:
Authors acknowledge the financial support of this work by Departamento Administrativo de Ciencia, Tecnología e Innovación, Colciencias, Colombia, through the call 617 for exchange of researchers Colombia-México UPB-CIMAV, contract 684 UPB-Colciencias. Special thanks go to Universidad Pontificia Bolivariana (UPB, Medellín-Colombia), the Centro de Investigación en Materiales Avanzados S.C. (CIMAV, Monterrey-México) and Centro de Investigación e Innovación en Ingeniería Aeronáutica (CIIIA). We thank to Miguel A. Esneider Alcalá from CIMAV for the technical support.
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