RT Journal Article
T1 Hybrid sol-gel coatings doped with non-toxic corrosion inhibitors for corrosion protection on AZ61 magnesium alloy
A1 Rodríguez Alonso, Luis
A1 López Sánchez, Jesús
A1 Serrano, Aída
A1 Rodríguez de la Fuente, Oscar
A1 Galván, Juan Carlos
A1 Carmona Tejero, Noemí
AB Physiological human fluid is a natural corrosive environment and can lead to serious corrosion and mechanical damages to light Mg-Al alloys used in prosthetics for biomedical applications. In this work, organic-inorganic hybrid coatings doped with various environmentally friendly and non-toxic corrosion inhibitors have been prepared by the sol-gel process for the corrosion protection of AZ61 magnesium alloys. Effectiveness has been evaluated by pH measurements, optical microscopy, and SEM during a standard corrosion test in a Hanks' Balanced Salt Solution. The results showed that the addition of an inhibitor to the sol-gel coating can improve significantly the corrosion performance, being an excellent barrier for the L-cysteine-doped hybrid sol-gel films. The incorporation of TiO2 nanoparticles, 2-Aminopyridine and quinine organic molecules slowed down the corrosion rate of the Mg-Al alloy. Graphene oxide seemed to have the same response to corrosion as the hybrid sol-gel coating without inhibitors.
PB MDPI
SN 2310-2861
YR 2022
FD 2022-01
LK https://hdl.handle.net/20.500.14352/71355
UL https://hdl.handle.net/20.500.14352/71355
LA eng
NO © 2022 by the authors. Licensee MDPI,The authors acknowledge the Spanish Ministry of Science and Innovation for financing theprojects RTI2018-095856-B-C21 (AEI/FEDER; PIE: 2021-60-E-030, PIE: 2010-6-OE-013, and PID2019-104717RB-I00). A.S. acknowledges the financial support from the Comunidad de Madrid for an“Atracción de Talento Investigador” contract (no. 2017-t2/IND5395).The authors acknowledge the CNME Unit of the UCM for SEM measurements.
NO Ministerio de Ciencia e Innovación (MICINN)/FEDER
NO Ministerio de Ciencia e Innovación (MICINN)
NO Comunidad de Madrid
DS Docta Complutense
RD 30 abr 2024