Abstract
The organic–inorganic protective coatings for the aluminium alloy AA 2024-T3 were produced from a precursor 1,2-bis(trimethoxysilyl)ethane. The structural properties of the coatings were analysed using SEM, EDS, contact angles and IR reflection–absorption at the near grazing incidence angle conditions. Moreover, the forced degradation of the protective coatings at the anodic potentials was studied by various means of the ex situ and in situ analytical approaches with the aim to verify their applicability. The ex situ IR reflection–absorption spectroscopy revealed the prominent changes in the bands like hydration of coatings, cleavage of some siloxane bonds, changes in the regions of CH vibrations and breaking of some SiOAl bonds. The in situ electrochemical AFM approach revealed a decrease in the surface roughness during immersion of the coating, followed by the pretty similar values during application of the chronocoulometric pulses. The impedance spectroscopy indirectly confirmed a gradual dissolution/degradation of the coating.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
