Corrosion resistance of AISI 316L coated with an air-cured hydrogen silsesquioxane based spin-on-glass enamel in chloride environment

Corrosion resistance of AISI 316L coated with an air-cured hydrogen silsesquioxane based spin-on-glass enamel in chloride environment

Lampert, Felix (Technical University of Denmark)
Christiansen, Alexander Bruun (SiOx ApS)
Din, Rameez Ud (Technical University of Denmark)
Gonzalez Garcia, Y. (TU Delft (OLD) MSE-6)
Møller, Per (Technical University of Denmark)

2017

The efficiency of thin hydrogen silsesquioxane (HSQ) −based corrosion barrier coatings on 316L substrates after oxidative thermal curing at 400–550 °C in air was investigated. Infrared spectroscopy and electrochemical impedance spectroscopy showed that an increasing curing temperature leads to progressing coating densification, accompanied by decreasing barrier properties. Cyclic polarization measurements indicated that defects due to substrate oxidation are detrimental for the substrate passivity. Insufficiently polymerized coatings showed poor chemical stability in neutral salt spray testing and the chemical coating stability increased with curing temperature. Oxidative curing was found inadequate as polymerization treatment of HSQ-based corrosion barrier coatings on 316L substrate.

EIS
IR spectroscopy
Oxide coatings
Passivity
Polarisation
Stainless steel

http://resolver.tudelft.nl/uuid:04cf1af0-9986-4b93-a9b0-7fb291c5f347

https://doi.org/10.1016/j.corsci.2017.08.024

2019-09-15

0010-938X

Corrosion Science: the journal on environmental degradation of materials and its control, 127, 110-119

"Accepted Author Manuscript"

Institutional Repository

journal article

© 2017 Felix Lampert, Alexander Bruun Christiansen, Rameez Ud Din, Y. Gonzalez Garcia, Per Møller