Print Email Facebook Twitter Properties and performance of spin-on-glass coatings for the corrosion protection of stainless steels in chloride media Title Properties and performance of spin-on-glass coatings for the corrosion protection of stainless steels in chloride media Author Lampert, F. (Technical University of Denmark) Jensen, A.H. (SiOx ApS) Din, Rameez U. (Technical University of Denmark) Gonzalez Garcia, Y. (TU Delft (OLD) MSE-6) Møller, Per (Technical University of Denmark) Date 2018 Abstract Spin-on-glass deposition was investigated as viable alternative to increase the durability and performance of 316L steel in chloride environment. The buildup of a detrimental interface oxide was prevented by non-oxidative thermal curing of the coatings, which leads to a transformation to an inorganic, SiO2-like material. The degree of polymerization was found dependent on the curing temperature; however, even curing at the maximum investigated curing temperature of 800 °C led to still incomplete transformation, showing less SiO2-like character with respect to thermally grown oxide or fused silica. Electrochemical analysis by cyclic polarization indicated that the coatings behave as imperfect barrier coatings, which may enhance the passive properties of the substrates; however, there is still some statistical scatter in the quality of the coatings. While there is a tendency for an increase of the upper limit of the breakdown potential, there is also a decrease of the lower limit. It was found that such lower quality coatings showed, in association with substrate defects, unevenly distributed coating flaws, which may act as initiation points of pitting corrosion and decrease the corrosion resistance of coated substrates. Further, the films showed instability in aqueous environment due to imperfect polymerization. Subject coatingscorrosion resistancepassivitythin film To reference this document use: http://resolver.tudelft.nl/uuid:26c1f4a0-835e-45e8-af6e-e43c36f5324a DOI https://doi.org/10.1002/maco.201710016 Embargo date 2019-02-27 ISSN 0947-5117 Source Materials and Corrosion, 69 (9), 1279-1291 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2018 F. Lampert, A.H. Jensen, Rameez U. Din, Y. Gonzalez Garcia, Per Møller Files PDF Manuscript_G.pdf 1.08 MB Close viewer /islandora/object/uuid:26c1f4a0-835e-45e8-af6e-e43c36f5324a/datastream/OBJ/view