An efficient protection of stainless steel against corrosion: Combination of a conversion layer and titanium dioxide deposit

Advanced anticorrosive coatings prepared from electroactive polyimide–TiO2 hybrid nanocomposite materials

“…On the other hand, sol-gel deposited inorganic materials such as TiO 2 /SiO 2 mixtures have been shown to work as protective coatings on stainless steel [23][24][25][26][27], however, annealing at high temperatures (800 • C) is required to obtain a well-defined crystalline structure. Such high temperature exposure can be problematic since it can modify the crystalline structure and the physical and/or mechanical properties of the steel.…”

Optimization of Conversion Treatment on Austenitic Stainless Steel Using Experimental Designs

“…Samples were cleaned with tetrahydrofurane (ACROS ORGANIC, purity Z99%), washed with distilled water, and then dried in air at room temperature. Austenitic stainless steel conversion coating was obtained by chemical treatment in acid bath containing suitable additives and particularly substances containing chalcogenides such as sulphur (sulphides, thiosulphates) [4][5][6][7][8][9][10]. Corrosion inhibitors like acetylenic alcohols are also required to facilitate the control of film growth in order to obtain coats with specific properties [4][5][6][7][8][9][10].…”

“…Electrochemical deposition is an interesting technique to obtain corrosion protection coatings, but the problem for such coatings is adhesion. In previous papers [4][5][6], we described an original method to strengthen the interface between ceramic layer and stainless steel or super alloy substrate. This method involves three steps.…”

“…The morphology of the surface is important and must present a very porous structure and a high specific area to facilitate the anchoring of the ceramic layer [5][6][7]. Many authors have studied the influence of different parameters in conversion treatment for different metal substrates and different applications [5,[8][9][10].…”

A replacement of chromate coating for adhesive bonding of stainless steel in a corrosive environment

“…Such a microstructure helps to anchor further deposits [7], and various layers can be deposited by different methods on top of the conversion coating [8]. Moreover, subsequent thermal treatment may induce a reaction between compounds of the conversion layer and the deposit and further enhance adhesion [9]. Adhesive bonding is a widely used joining process in the worldwide production of engineering products.…”