Corrosion-protective coatings based on fluorocarbosilane

[Display omitted] •Fluorocarbosiloxane coating inhibits the corrosion process of 304 stainless steel.•MetalOSi covalent bonds are created between steel surface and fluorocarbosilane.•Well-developed chains consisting of SiOSi bonds have been created. This study discusses the effect of 3-(1,1,2,2,3,3,4,4-octafluoropentyloxy)propyltriethoxysilane (OFTES) based coatings on the anti-corrosive properties of 304 type stainless steel, which has not been described to date. The coatings were deposited from methanol using the anhydrous deposition method and influence of the sonication on this process has also been investigated. Anti-corrosive properties of modified and unmodified steel surfaces have been characterized by electrochemical and surface analysis methods. Since silicon is an element capable of forming bonds with both organic and inorganic substrates, these features allow to combine organofunctional silanes with metal as well as steel surfaces through metalOSi covalent bonds. A fluorinated alkyl chain, which is attached to the silicon atom, forms an effective barrier against an aggressive aqueous environment.