Enhancement of corrosion protection of AISI 304 stainless steel by nanostructured sol–gel TiO2 films

Ćurković, Lidija; Ćurković, Helena Otmačić; Salopek, Sara; Renjo, Marijana Majić; Šegota, Suzana

doi:10.1016/j.corsci.2013.07.045

Cited by 129 publications

(67 citation statements)

References 37 publications

(39 reference statements)

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“…The best results have been produced using a high sintering temperature, approximately 700 to 900 ºC, or a long sintering time, i.e., 2 hours or more [8]. However, these processes typically reduce photocatalytic activity, during the transformation of anatase phase to rutile phase [17,21]. Another method for enhancing the precursor-sol coating adhesion is adding polyethylene glycol PEG, which has a double function.…”

Section: Coating Morphologymentioning

confidence: 99%

“…It is possible to see rutile phase in this figure. In general, alkoxide precursor-sol with or without PEG generate rutile phase at 500 or 600 ºC [20,21]. In this case, the rutile phase formation is promoted by induction heating at 300 ºC.…”

Section: Structural Characterization Of Tio 2 Filmsmentioning

confidence: 99%

“…This higher porosity contributed to a higher penetration of the electrolyte through the pores, reaching the surface of the substrate and reducing the corrosion resistance of the Stainless Steel. For both coating, polyethylene glycol (PEG) was added, and it is already know [20,21] that its decomposition during sintering process generates porosity on the thin film. For photocatalysis, this porosity on the thin film form is necessary to reach a behavior near to the powder form, because this gives more active surface area of TiO 2 during pollutant degradation process.…”

Section: Corrosion Measurementsmentioning

confidence: 99%

“…Resistance to the environmental oxidation of the Stainless Steel substrate uncoated and coated with titanium dioxide, and sintered by induction heating and conventional furnace, were studied by polarization measurements with NaCl (3.5 wt%) [21,[27][28][29][30]. Tafel polarization curves (Fig.…”

Section: Corrosion Measurementsmentioning

confidence: 99%

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141 Induction Heating of TiO 2 Coating on SS Substrate for Photocatalysis 2016 60 3 Induction Heating Consolidation of TiO 2 Sol-Gel Coating on Stainless Steel Support for Photocatalysis Applications

Vásquez

Jerez

Schrebler

et al. 2016

Period. Polytech. Chem. Eng.

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IntroductionThe remission of toxic contaminants and the use of clean energy, such as the energy of the sun, for this purpose have become popular topics for many research teams. The development of any nation in the world demands a better and major use of energy that must be efficient and have a low environmental impact. Wastewater treatment via an advanced oxidation process, which uses toxic elements from organic sources, is one of the aims of photocatalysis. The process has a high efficiency for neutralizing these toxic compounds and presents the opportunity to produce electrodes that are compatible with the environment [1]. The capability of the electrodes, chemistry process, associated cost effects and the product lifetime are related to the type of material used, and to its structure, stability, and porosity, the substrate material and shape, and the successful adhesion of the coating. These factors must be improved to reach a massive industrial application of this process. Many other factors can affect the stability of the electrode, such as substrate preparation (in particular with metallic support), the inclusion of a dopant, the solvent involved in the synthesis of the electrodes, the preparation methods and the parameters of thermal decomposition (temperature, heating rate and time) [2].Titanium oxide is one of the most studied materials for photocatalysis applications because it exhibits highly photocatalytic properties and is stable, non-toxic and relatively cheap to produce. The most efficient form of use is via the commercial nanopowders called Degussa P-25 TiO 2 [3]. However, the use of these nanopowders generates secondary costs, associate with the need for a high cost filter system to separate the particles from the treated water. To avoid this problem, studies have been conducted to obtain a material supported by a substrate that can be reused, but it must also withstand the reactor conditions during treatment. Simultaneously, these studies have tried to improve the photocatalytic activity of the material by improving the anatase phase stability, porosity distribution, superficial contact area and other variables [4,5,6,7,8]. Numerous substrates have been studied and used to fabricated these types of electrodes, including stainless steel, paper, conductive glass, titanium, ceramic foam, TiO 2 nanoneedle/nanoribbon

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Section: Coating Morphologymentioning

confidence: 99%

Section: Structural Characterization Of Tio 2 Filmsmentioning

confidence: 99%

Section: Corrosion Measurementsmentioning

confidence: 99%

Section: Corrosion Measurementsmentioning

confidence: 99%

See 2 more Smart Citations

141 Induction Heating of TiO 2 Coating on SS Substrate for Photocatalysis 2016 60 3 Induction Heating Consolidation of TiO 2 Sol-Gel Coating on Stainless Steel Support for Photocatalysis Applications

Vásquez

Jerez

Schrebler

et al. 2016

Period. Polytech. Chem. Eng.

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“…Very promising protective properties are offered by ceramic and composite coatings. [4][5][6][7][8][9]. The overall quality and properties of the coatings can differ significantly depending on used deposition technique.…”

Section: Introductionmentioning

confidence: 99%

Manufacturing, Microstructure and Corrosion Resistance of Electrophoretically Deposited SiO2 and Ni/SiO2 Coatings On X2CrNiMo17–12–2 Steel

Ratajski

Kalemba–Rec

Dubiel

2016

Archives of Metallurgy and Materials

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The SiO 2 and Ni/SiO 2 coatings were electrophoretically deposited on X2CrNiMo17-12-2 steel using ethanol-based suspensions of the SiO 2 and Ni powders. The influence of the zeta potential and concentration of the suspensions, the applied voltage and deposition time on the quality of the coatings was studied. Microstructure of the plan-view and cross sections of the coatings was investigated using scanning electron microscopy. The plan-view images revealed the uniform microstructure of the coatings with sporadically observed cracks, pores as well SiO 2 and Ni agglomerates. On the cross-sections, the Cr 2 O 3 layer, resulted from oxidation of the substrate during sintering of the coatings was observed. The polarization tests have shown that SiO 2 and Ni/SiO 2 coatings improve the corrosion resistance of the X2CrNiMo17-12-2 steel in 3.5% NaCl aqueous solution.

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Anticorrosion Coating

Kumar,

Bhadauria,

Kaur

et al. 2024

Functional Coatings

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Enhancement of corrosion protection of AISI 304 stainless steel by nanostructured sol–gel TiO2 films

Cited by 129 publications

References 37 publications

141 Induction Heating of TiO 2 Coating on SS Substrate for Photocatalysis 2016 60 3 Induction Heating Consolidation of TiO 2 Sol-Gel Coating on Stainless Steel Support for Photocatalysis Applications

141 Induction Heating of TiO 2 Coating on SS Substrate for Photocatalysis 2016 60 3 Induction Heating Consolidation of TiO 2 Sol-Gel Coating on Stainless Steel Support for Photocatalysis Applications

Manufacturing, Microstructure and Corrosion Resistance of Electrophoretically Deposited SiO2 and Ni/SiO2 Coatings On X2CrNiMo17–12–2 Steel

Anticorrosion Coating

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