Nanostructured TiO&lt;SUB&gt;2&lt;/SUB&gt; Coated Stainless Steel for Corrosion Protection

Zakaria, Mohamed B.; Mohamed, A.E.; Ebeid, El-Zeiny M.

doi:10.1166/jnn.2016.12893

Cited by 8 publications

(3 citation statements)

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“…Titania nanostructured coatings and thin films have attracted extensive attention due to their numerous applications, such as self-cleaning [1,2], anti-bacterial [3][4][5], anti-fungal [6], photocatalysis [7][8][9], biomedical [10,11], air [12] and water [13,14] purification, etc. Various coatings methods have been used for depositing titania layer on substrates, such as sol-gel [15,16], thermal [17,18] and plasma spray [19,20], plasma electrolyte oxidation [21], physical [22] and chemical [23] vapour deposition, tape casting [24], etc. Electrophoretic deposition (EPD) is a colloidal processing technique which has been used for depositing wide range of materials onto the conductive substrates [25].…”

Section: Introductionmentioning

confidence: 99%

Effect of Tris and acetic acid on the stability of titania nanoparticles in different alcohols and their electrophoretic deposition process

Farrokhi-Rad

2018

PAC

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Tris (tris(hydroxymethyl)aminomethane) was used as the dispersant to enhance the colloidal stability of titania nanoparticles in different alcohols (methanol, ethanol, isopropanol and butanol). Acetic acid (AA) was also used to increase the ionization of Tris via acid-base reaction. The effect of Tris on the stability of suspensions in the absence as well as the presence of AA was investigated by different analysis, such as conductivity and zeta potential measurement as well as FTIR analysis. It was found that Tris is protonated and adsorbed on the titania nanoparticles. It enhances their zeta potential and thus colloidal stability. The optimum concentration of Tris increased with molecular weight of alcohol (0.1, 0.2, 0.3 and 0.6 g/l for methanolic, ethanolic, isopropanolic and butanolic suspensions, respectively). The optimum concentration of Tris decreased to 0.1 g/ l for all AA containing suspensions except the methanolic ones. Titania coating was obtained by electrophoretic deposition (EPD) performed at 60 V. The current density and in-situ kinetics of deposition were recorded during EPD. It was found that the kinetics of EPD is the fastest for the suspensions with the optimum concentration of Tris (the highest zeta potential). Calcium phosphate phases were formed on the surface of titania coating after its immersion for one week in SBF at 37.5°C.

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Section: Introductionmentioning

confidence: 99%

Effect of Tris and acetic acid on the stability of titania nanoparticles in different alcohols and their electrophoretic deposition process

Farrokhi-Rad

2018

PAC

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“…For the silicon-based sol-gel coatings, the incorporation of alkoxysilanes with organic groups attached to the silicon atom has reduced the presence of defects, allowing the preparation of crack-free coatings with thickness greater than 2 μm [7][8][9][10][11][12]. Other oxides compositions have been evaluated for corrosion protection of this stainless steel [13][14][15][16][17][18][19][20][21][22][23], but their inorganic nature leads to limited protection due to their low thickness and to the presence of defects coming from their inherent brittleness. In contrast, the incorporation of commercial colloidal suspension of silica and the electrophoretic deposition (EPD) for the preparation of coatings on AISI 304 stainless steel has allowed the synthesis of thicker coatings with improved corrosion protection properties [24,25].…”

Section: Introductionmentioning

confidence: 99%

Thickness-properties synergy in organic–inorganic consolidated melting-gel coatings for protection of 304 stainless steel in NaCl solutions

Aparicio¹,

Jitianu

Rodríguez

et al. 2017

Surface and Coatings Technology

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Homogeneous and crack-free methyl-substituted organic-inorganic hybrid glass coatings (thickness up to 10 μm) were deposited on AISI 304 stainless steel. Different hybrid glasses obtained from consolidation of the diluted melting gels with various methyltriethoxysilane (MTES)/dimethyldiethoxysilane (DMDES) ratios were evaluated considering chemical structure, coating adhesion and corrosion protection. The 70MTES/30DMDES (molar%) melting-gel coating provided improved corrosion protection for this steel due to the synergy of different properties: a highly cross-linked inorganic structure, a coating plasticity based on the hybrid network, and a good adhesion to the substrate through hydroxyl groups. Electrochemical results show a good barrier film with a passive range of 500 mV, a low anodic current density (0.03 nA cm −2) and impedance values of 10 9.5 Ω cm 2 after two months of immersion in 3.5 wt.% NaCl solution.

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“…Such a coating can be made of titanium dioxide (TiO 2 ). According to some researchers, it may provide both antibacterial and anti-corrosion effects [14,15]. Strong antibacterial properties were also confirmed in the case of coatings containing silver particles [16].…”

Section: Introductionmentioning

confidence: 89%

Improvement of Properties of Stainless Steel Orthodontic Archwire Using TiO2:Ag Coating

et al. 2021

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Orthodontic treatment carries the risk of major complications such as enamel demineralization, tooth decay, gingivitis, and periodontal damage. A large number of elements of fixed orthodontic appliance results in the creation of additional plaque retention sites which increase the risk of biofilm creation. Modification of the surface of orthodontic elements may prevent the formation of bacterial biofilm. In this paper, surface modification of stainless steel orthodontic wires with TiO2: Ag was carried out by the sol-gel thin film dip-coating method. To obtain the anatase crystal structure, substrates were calcined for 2 h at 500 °C. The properties of the obtained coatings were investigated using scanning electron microscopy, X-ray diffraction, and electrochemical tests. Corrosion studies were performed in a Ringer’s solution, which simulated physiological solution. SEM and XRD analyses of the coated surface confirmed the presence of Ag nanoparticles which may have antimicrobial potential.

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Nanostructured TiO<SUB>2</SUB> Coated Stainless Steel for Corrosion Protection

Cited by 8 publications

References 0 publications

Effect of Tris and acetic acid on the stability of titania nanoparticles in different alcohols and their electrophoretic deposition process

Effect of Tris and acetic acid on the stability of titania nanoparticles in different alcohols and their electrophoretic deposition process

Thickness-properties synergy in organic–inorganic consolidated melting-gel coatings for protection of 304 stainless steel in NaCl solutions

Improvement of Properties of Stainless Steel Orthodontic Archwire Using TiO2:Ag Coating

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