Print Email Facebook Twitter Unravelling the corrosion protection mechanism of silyl ester by combined electrochemistry and x-ray computed tomography Title Unravelling the corrosion protection mechanism of silyl ester by combined electrochemistry and x-ray computed tomography Author Garcia Espallargas, S.J. Wu, X. Faculty Aerospace Engineering Department Aerospace Structures & Materials Date 2013-06-16 Abstract Recently, encapsulated silyl esters have been shown to act as efficient healing agents for self-healing anticorrosive coatings. While the positive protective effects were irrefutable, the actual protection mechanism has not been clarified yet. In this study, x-ray computed ?-tomography and electrochemical impedance spectroscopy have been employed to unravel the protection mechanisms for a coated AA7050 aluminium alloy. The results show that the employed silyl ester protects the damaged coating-metal system by delaying the delamination initiation and growth kinetics while at the same time decreasing the underfilm pit area growth. The study also shows the potential of x-ray computed ?-tomography to follow the delamination front line and underfilm pits in coated metallic samples. The combination with EIS led to a major understanding of both EIS plots and the protection mechanisms offered by the silyl ester used. Subject silyl esterdelaminationcoatingx-ray tomographyimpedance To reference this document use: http://resolver.tudelft.nl/uuid:bc7f0f94-4a13-4417-893d-c8c6e36f2bbc Publisher Magnel Laboratory for Concrete Research ISBN 9789082073713 Source uuid:3078d20c-2173-4c13-a4d7-106207c78577 Source ICSHM 2013: Proceedings of the 4th International Conference on Self-Healing Materials, Ghent, Belgium, 16-20 June 2013 Part of collection Institutional Repository Document type conference paper Rights (c) 2013 The Author(s) Files PDF Garcia_Espallargas_2013.pdf 420.61 KB Close viewer /islandora/object/uuid:bc7f0f94-4a13-4417-893d-c8c6e36f2bbc/datastream/OBJ/view