Corrosion protection of metals by water-based silane mixtures of bis-[trimethoxysilylpropyl]amine and vinyltriacetoxysilane

Zhu, Deyuan; Ooij, W.J. van

doi:10.1016/j.porgcoat.2003.08.009

Cited by 232 publications

(115 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Subsequent coating with γ-APS significantly increases the intensities of these peaks, with the appearance of a new peak around 1570 cm -1 that is assigned to the protonated amino groups [25]. Our FTIR results are consistent with those reported for BTSE and/or γ-APS treated Al, Fe and Mg samples [17,19,25,31].…”

Section: Surface Modification Of Az31 Mg Alloysupporting

confidence: 89%

Biofunctionalized anti-corrosive silane coatings for magnesium alloys

et al. 2013

View full text Add to dashboard Cite

Biodegradable magnesium alloys are advantageous in various implant applications, as they reduce the risks associated with permanent metallic implants. However, a rapid corrosion rate is usually a hindrance in biomedical applications. Here we report a facile two step procedure to introduce multifunctional, anticorrosive coatings on Mg alloys, such as AZ31. The first step involves treating the NaOH-activated Mg with bistriethoxysilylethane to immobilize a layer of densely crosslinked silane coating with good corrosion resistance; the second step is to impart amine functionality to the surface by treating the modified Mg with 3-amino-propyltrimethoxysilane. We characterized the two-layer anticorrosive coating of Mg alloy AZ31 by Fourier transform infrared spectroscopy, static contact angle measurement and optical profilometry, potentiodynamic polarization and AC impedance measurements. Furthermore, heparin was covalently conjugated onto the silane-treated AZ31 to render the coating haemocompatible, as demonstrated by reduced platelet adhesion on the heparinized surface. The method reported here is also applicable to the preparation of other types of biofunctional, anti-corrosive coatings and thus of significant interest in biodegradable implant applications.Keywords coatings, magnesium, alloys, corrosive, biofunctionalized, silane, anti Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsLiu, X., Yue, Z., Romeo, T., Weber, J., Scheuermann, T., Moulton, S. & Wallace, G. (2013). Biofunctionalized anti-corrosive silane coatings for magnesium alloys. Acta Biomaterialia, 9 (10), 8671-8677. AuthorsXiao Liu, Zhilian Yue, Tony Romeo, Jan Weber, Torsten Scheuermann, Simon E. Moulton, and Gordon G. Wallace AbstractBiodegradable magnesium (Mg) alloys are advantageous in various implant applications, as they reduce the risks associated with permanent metallic implants. However, the fast corrosion rate is usually a hindrance in biomedical applications. Here we report a facile twostep procedure to introduce multifunctional, anticorrosive coatings on Mg alloys, such as AZ31. The first step involves treating the NaOH-activated Mg with bistriethoxysilylethane (BTSE) to immobilise a layer of densely crosslinked silane coating with good corrosion resistance; the second step is to impart amine functionality to the surface by treating the modified Mg with 3-amino-propyltrimethoxysilane (γ-APS). We characterised the two-layer anticorrosive coating of AZ31 Mg alloy by Fourier transform infrared spectroscopy, static contact angle measurement and optical profilometry, potentiodynamic polarization and AC impedance measurements. Furthermore, heparin was covalently conjugated onto the silane treated AZ31 to render the coating haemocompatible, as demonstrated by reduced platelet adhesion on the heparinised surface. The method reported here is also applicable to the preparation of other types of biofunctional, anticorrosive coatings, and thus of significant interest in biodegradable implant applications.

show abstract

Section: Surface Modification Of Az31 Mg Alloysupporting

confidence: 89%

Biofunctionalized anti-corrosive silane coatings for magnesium alloys

et al. 2013

View full text Add to dashboard Cite

show abstract

“…2 Hence, polymer coatings in their role of protecting metal against corrosion have been studied extensively. [3][4][5][6] Recently, efforts on reducing the emission of volatile organic compounds (VOC) are increasing, in line with world wide legislation changes. Therefore, studies focusing on the use of more environmentally friendly materials have significantly increased.…”

Section: Introductionmentioning

confidence: 99%

Waterborne chitosan–epoxysilane hybrid pretreatments for corrosion protection of zinc

Fernández-Solis

Erbe

2016

Biointerphases

View full text Add to dashboard Cite

Biopolymer-based systems are extensively studied as green alternatives for traditional polymer coatings, e.g. in corrosion protection. Chitosan-epoxysilane hybrid films are presented in this work as a chitosan-based protective system, which could e.g. be applied in a pretreatment step. For the preparation of the chitosan-epoxysilane hybrid systems, a sol-gel procedure was applied. The function of the silane is to ensure adhesion to the substrate. On zinc substrates, homogeneous thin films with thickness of 50 − 70 nm were obtained after thermal curing. The hybrid-coated zinc substrates were characterized by infrared (IR) spectroscopy, ellipsometry and X-ray photoelectron spectroscopy (XPS). As model corrosion experiments, linear polarization resistance was measured, and cathodic delamination of the weak polymer coating poly(vinylbutyral) [PVB] was studied using scanning Kelvin probe. Overall, chitosanepoxysilane hybrid pretreated samples showed lower delamination rates than unmodified chitosan coatings and pure PVB. Electrochemical impedance spectroscopy (EIS) confirmed a reduced ion permeability and water uptake by chitosan-epoxysilane films compared to that of a non-modified chitosan coating. Even though the coatings are hydrophobic and contain water, they slow down cathodic delamination by limiting ion transport.

show abstract

“…As a result, the organic coating layer is chemically bonded to the metal substrate 7 . In regards to the corrosion science, a lot of effort has been made to apply these materials as adhesion promoters between metallic substrates and organic coatings used for protection against the corrosion phenomena 8,9 . The chemistry of silanes and the mechanism of interaction of these molecules with a metallic substrate and an organic coating has been widely explained.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, in order to make these silane coatings more effective as a protection barrier to be used in zinc substrates, new types of materials have been developed. Blends of polymers 8,9 and organic-inorganic hybrid materials 10 are among the main types of studied materials. Organic-inorganic hybrids coatings have applications in many fields of materials chemistry because they are simple to process, and they can be used to obtain coatings to improve the corrosion resistance of some metallic substrates [8][9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

Effect of Tetraethoxy-silane (TEOS) Amounts on the Corrosion Prevention Properties of Siloxane-PMMA Hybrid Coatings on Galvanized Steel Substrates

et al. 2015

View full text Add to dashboard Cite

Siloxane-poly(methyl methacrylate) (PMMA) organic-inorganic hybrid coatings were deposited on galvanized steel by the dip-coating sol-gel technique. Anticorrosion properties, as well as the morphological, surface and structural features were studied. Hybrid coatings were synthesized from tetraethoxy-silane (TEOS) and methyl methacrylate (MMA) as inorganic and organic phases, respectively, linked by 3-metacriloxypropyl-trimethoxysilane (TMSM) as a coupling agent. The MMA/TMSM ratio was kept constant, whereas the four TEOS/TMSM ratios were varied. The characterization of coatings was assessed using several techniques such as Scanning Electronic Microscopy (SEM), Contact Angle, Fourier Transform Infrared (FT-IR), Open Circuit Polarization (OCP), Atomic Force Microscopy (AFM) and Electrochemical Impedance Spectroscopy measurements (EIS). The EIS results, which were obtained for the hybrid coatings, were discussed based on an electrical equivalent circuit used to adjust the experimental data. The results showed that the increasing the TEOS content caused increase in coating thickness, increased in the surface roughness and increased in the surface hydrophobicity. The film with the highest TEOS content presented the best electrochemical performance, more effective in protecting against corrosion.

show abstract

Corrosion protection of metals by water-based silane mixtures of bis-[trimethoxysilylpropyl]amine and vinyltriacetoxysilane

Cited by 232 publications

References 18 publications

Biofunctionalized anti-corrosive silane coatings for magnesium alloys

Biofunctionalized anti-corrosive silane coatings for magnesium alloys

Waterborne chitosan–epoxysilane hybrid pretreatments for corrosion protection of zinc

Effect of Tetraethoxy-silane (TEOS) Amounts on the Corrosion Prevention Properties of Siloxane-PMMA Hybrid Coatings on Galvanized Steel Substrates

Contact Info

Product

Resources

About