Impregnation of nanoporous alumina with benzoxazine thermoset resins for aluminum corrosion protection

Titre : Impregnation of nanoporous alumina with benzoxazine thermoset resins for aluminium corrosion protection
Auteurs : A. Renaud1, Y. Paint2, L. Bonnaud2, M. Poorteman1, P. Dubois2, M. Olivier1,* 1 Department of Materials Science, Materials Engineering Research Center (CRIM), University of Mons, Place du Parc 20, B-7000 Mons, Belgium 2 Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers (CIRMAP), Materia Nova research Center & University of Mons, Place du Parc 20, B-7000 Mons * +32(0)65/37.44.31, marjorie.olivier@umons.ac.be
Abstract: A para-PhenyleneDiAmine based benzoxazine thermoset have been applied by spin coating on anodized (using sulfo-tartaric electrolyte) AA2024-T3 substrates. Subsequently, a thermal curing cycle has been performed in order to cross-link the benzoxazine resin which impregnates and seals the oxide nanoporous structure. This phenomenon has been investigated using Scanning Electron Microscopy (SEM) combined with Energy-Dispersive X-ray spectroscopy (EDX), and Glow Discharge Optical Emission Spectroscopy (GDOES). Finally, the impact on the electrochemical properties of the obtained systems has been evaluated using Electrochemical Impedance Spectroscopy (EIS).
Mots clés: Benzoxazine coating; Aluminum anodizing; Thermal curing; Barrier properties; Electrochemical Impedance Spectroscopy
Institut de Recherche associé: matériaux
Thème(s) choisi(s): Matériaux;