Pretreatment effect of the pure titanium surface on hybrid coating adhesion based on tetraethoxysilane and methyltriethoxysilane

Casagrande, Rosiana Boniatti; Kunst, Sandra Raquel; Beltrami, Lílian Vanessa Rossa; Aguzzoli, César; Brandalise, Rosmary Nichele; Malfatti, Célia de Fraga

doi:10.1007/s11998-017-0035-2

Cited by 15 publications

(11 citation statements)

References 61 publications

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“…This outcome indicated that the deposited hybrid coating had low thickness, fact that allowed the electron beam to overtake and detect the Ti-6Al-4V metal substrate. Similar results were reported by other researchers, 10,39 who emphasized that the deposition of a single sol hybrid layer on the surface of the Ti-6Al-4V alloy was enough to generate a flawless thin film with good protective properties.…”

Section: Surface Characterizationsupporting

confidence: 90%

“…34 The S0M hybrid coating ( Figure 6b) recorded two phenomena for immersion times 1, 24, 72 and 168 h: (i) the first one, at medium-to-low frequency range, was attributed to changes in electrical conductivity during the exposure to the corrosive SBF environment; in other words, the electrolyte permeability through the film furthers the response of the passive film below the sol-gel coating; 25 and (ii) the second one, at high frequency range, was associated with the presence of protective coating, which indicated high resistance. 10,16 Figure 6. Bode diagrams generated for (a) uncoated substrate (TWC) and (b) hybrid siloxane-PMMA coating (S0M), after 1, 24, 72 and 168 h immersed in SBF solution at 37 °C.…”

Section: Corrosion Analysismentioning

confidence: 99%

“…Among them, sol-gel processes can be a potential alternative to increase the bioactivity and biocompatibility degree of implanted metal surfaces. 9,10 The sol-gel process uses a versatile synthesis method to produce new materials, whereas the chemistry of this process is based on hydrolysis and on condensation reactions of metal alkoxides; 11 besides, it allows controlling both the chemistry and the molecular level of the structure when synthesis parameters, such as the amount of precursors, solvents, catalyst and processing temperatures, change. The remarkable advantages of sol-gel processing allow the production of organic-inorganic hybrid coatings 12…”

Section: Introductionmentioning

confidence: 99%

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PMMA-SiO2 Organic-Inorganic Hybrid Coating Application to Ti-6Al-4V Alloy Prepared through the Sol-Gel Method

Santana

Kunst

Oliveira

et al. 2020

J. Braz. Chem. Soc.

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Siloxane-poly(methyl methacrylate) (PMMA) hybrid was synthesized based on the sol-gel method and applied to Ti-6Al-4V through dip-coating. The structural feature of the hybrid was subjected to Fourier-transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TG); its morphological properties were analyzed through scanning electron microscope (SEM), energy dispersive spectrometry (EDS), atomic force microscopy (AFM) and contact angle. The electrochemical behavior and corrosion resistance of both the hybrid coating and the uncoated substrate were investigated based on electrochemical impedance spectroscopy (EIS) and scanning vibrating electrode technique (SVET). Results showed homogeneous coating formation due to the rigid hybrid network formed during polymerization, hydrolysis and condensation reactions. This outcome suggested interaction between the organic (methyl methacrylate (MMA)) and inorganic (tetraethyl orthosilicate (TEOS)) phases, which was favored by the coupling agent (3-(trimethoxysilyl)propyl methacrylate (TMSM)). The S0M (PMMA-SiO 2 hybrid Ti-6Al-4V coated alloy) film presented regular topography and adherence to the substrate. Electrochemical simulated body fluid (SBF) tests showed that the hybrid coating presented better barrier properties (168 h of the immersion time) than the uncoated substrate, fact that makes it an interesting material for anti-corrosive applications in biomaterials.

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Section: Surface Characterizationsupporting

confidence: 90%

Section: Corrosion Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

PMMA-SiO2 Organic-Inorganic Hybrid Coating Application to Ti-6Al-4V Alloy Prepared through the Sol-Gel Method

Santana

Kunst

Oliveira

et al. 2020

J. Braz. Chem. Soc.

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“…The Ti substrates were dipped in a solution consisting of 10 mL sulfuric acid (H 2 SO 4 , 95%) and 10 mL perhydrol (H 2 O 2 , 33%) at a temperature of 45 °C for 30 min. After dipping, the samples were washed ultrasonically in distilled water for 30 min and ethanol for 10 min and finally dried in the air [ 29 ].…”

Section: Methodsmentioning

confidence: 99%

The Effect of Electrophoretic Deposition Parameters on the Microstructure and Adhesion of Zein Coatings to Titanium Substrates

et al. 2021

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Zein coatings were obtained by electrophoretic deposition (EPD) on commercially pure titanium substrates in an as-received state and after various chemical treatments. The properties of the zein solution, zeta potential and conductivity, at varying pH values were investigated. It was found that the zein content and the ratio of water to ethanol of the solution used for EPD, as well as the process voltage value and time, significantly influence the morphology of coatings. The deposits obtained from the solution containing 150 g/L and 200 g/L of zein and 10 vol % of water and 90 vol % of ethanol, about 4–5 μm thick, were dense and homogeneous. The effect of chemical treatment of the Ti substrate surface prior to EPD on coating adhesion to the substrate was determined. The coatings showed the highest adhesion to the as-received and anodized substrates due to the presence of a thick TiO2 layer on their surfaces and the presence of specific surface features. Coated titanium substrates showed slightly lower electrochemical corrosion resistance than the uncoated one in Ringer’s solution. The coatings showed a well-developed surface topography compared to the as-received substrate, and they demonstrated hydrophilic nature. The present results provide new insights for the further development of zein-based composite coatings for biomedical engineering applications.

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“…After this process, the samples were degreased with an alkaline detergent and rinsed with distilled water. Subsequently, in order to improve the adhesion of the coating to the substrate, the samples were submitted to an alkaline pre-treatment with sodium hydroxide (NaOH 0.01 mol•L -1 ) for 3 min at 20ºC 13,19 .…”

Section: Methodsmentioning

confidence: 99%

Obtainment and Characterization of a Silicon alkoxides-based Coating Applied to a Substrate of Stainless Steel 316L for Use in Biomaterials

et al. 2019

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The silicon alkoxides-based coating is an alternative to control the release of cytotoxic ions through metal implants. This study evaluated the influence of the number of layers of a hybrid coating on the surface of austenitic stainless steel AISI 316L on the corrosion resistance. This coating was produced from the precursors of silicon alkoxides 3-(trimethoxysilyl)propyl methacrylate (MAP) and tetraethoxisylane (TEOS) obtained by sol-gel process, and easily applied by dip-coating. Results indicated that a single layer of coating in the substrate showed a better protection than two layers. This single layer developed by the combination of the precursors TEOS-MAP was enough to create a compact and uniform film with good adherence to AISI 316L and higher electrochemical development.A single layer of TEOS-MAP coating is more adequate as a protective coating for the AISI 361L than the sample subjected to two layers and the non-coated substrate, because this film ensures its integrity in an aggressive environment.

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Pretreatment effect of the pure titanium surface on hybrid coating adhesion based on tetraethoxysilane and methyltriethoxysilane

Cited by 15 publications

References 61 publications

PMMA-SiO2 Organic-Inorganic Hybrid Coating Application to Ti-6Al-4V Alloy Prepared through the Sol-Gel Method

PMMA-SiO2 Organic-Inorganic Hybrid Coating Application to Ti-6Al-4V Alloy Prepared through the Sol-Gel Method

The Effect of Electrophoretic Deposition Parameters on the Microstructure and Adhesion of Zein Coatings to Titanium Substrates

Obtainment and Characterization of a Silicon alkoxides-based Coating Applied to a Substrate of Stainless Steel 316L for Use in Biomaterials

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