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Journal article

Corrosion Resistance of AISI 316L Coated with an Air-Cured Hydrogen Silsesquioxane Based Spin-On-Glass Enamel in Chloride Environment

From

Department of Mechanical Engineering, Technical University of Denmark1

Materials and Surface Engineering, Department of Mechanical Engineering, Technical University of Denmark2

SiOx ApS3

Delft University of Technology4

The efficiency of thin hydrogen silsesquioxane (HSQ) -based corrosion barrier coatings on 316 Lsubstrates after oxidative thermal curing at 400-550 ºC 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.

Language: English
Year: 2017
Pages: 110-119
ISSN: 0010938x and 18790496
Types: Journal article
DOI: 10.1016/j.corsci.2017.08.024
ORCIDs: Lampert, Felix and Din, Rameez Ud

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