Viability of epoxy–siloxane hybrid coatings for preventing steel corrosion

Echeverría, M.; Abreu, C.M.; Lau, Kingsley; Echeverría, C.A.

doi:10.1016/j.porgcoat.2015.12.005

Cited by 43 publications

(12 citation statements)

References 19 publications

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“…Although the corrosion protection efficiency of the best epoxy-silica coatings, reported so far [7,26,27], is comparable with results presented in this work, it may profit from their 10-100 times higher thickness. …”

Section: Nm)supporting

confidence: 84%

“…This is justified especially when considering that a high-corrosion resistance and long durability in aggressive environments can be achieved by thin films with thicknesses of less than 10 μm, resulting in substantially reduced material costs compared to conventional high-performance coating systems. More specifically, regarding the epoxy-silica hybrid system, the results presented in this work and those listed in Table 7 show that different compositions applied to distinct alloys can provide a very effective long-term corrosion protection [7,26,27]. Very promising results were also achieved for PMMA-silica coatings [8,10,31], with the highest observed durability of more than 560 days in 3.5% NaCl, and for hybrids containing reinforcement and inhibitor agents [11,18].…”

Section: Advances In Organic-inorganic Hybrid Coatings For Corrosion mentioning

confidence: 63%

“…One example of an efficient corrosion protection of mild steel was recently reported for a hybrid system combining an epoxy-siloxane topcoat with an epoxy primer containing micaceous iron oxide and zinc phosphate pigments [7]. The electrochemical measurements showed a high-impedance modulus of up to 100 GΩ cm 2 , remaining stable for more than 1 year in contact with 3% NaCl solution.…”

Section: Introductionmentioning

confidence: 99%

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Organic-Inorganic Hybrid Coatings for Corrosion Protection of Metallic Surfaces

Harb

Trentin²,

Torrico

et al. 2017

New Technologies in Protective Coatings

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A variety of organic-inorganic hybrids have been designed to act as anticorrosive coatings of metallic substrates. Among them, epoxy-silica and poly(methyl methacrylate) (PMMA)-silica hybrids, prepared by the sol-gel process and deposited onto steel or aluminum alloys, have demonstrated high anticorrosive efficiency combined with high thermal and mechanical resistance. Lignin, carbon nanotubes, and graphene oxide have been incorporated into PMMA-silica hybrids as reinforcement agents, and cerium (IV) as corrosion inhibitor. Both hybrids were characterized in terms of their structural and thermal characteristics using different pectroscopies, microscopies and thermogravimetric analysis. Both hybrids present homogeneous nanostructure composed of highly condensed silica nanodomains covalently bonded to the polymeric phase. The transparent coatings with a thickness of 2-7 μm have low surface roughness, high adhesion to metallic substrates, elevated thermal stability, and excellent barrier behavior. Electrochemical impedance spectroscopy showed for coated samples a high corrosion resistance of up to 50 GΩ cm2 and durability >18 months in saline solution. Further improvement of corrosion resistance, thermal and mechanical stability was achieved by incorporation of lignin, carbon nanotubes, and graphene oxide into PMMA-silica matrix, and a self-healing effect was observed after Ce(IV) addition. The results are compared and discussed with those recently reported for a variety of hybrid coatings.

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Section: Nm)supporting

confidence: 84%

Section: Advances In Organic-inorganic Hybrid Coatings For Corrosion mentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Organic-Inorganic Hybrid Coatings for Corrosion Protection of Metallic Surfaces

Harb

Trentin²,

Torrico

et al. 2017

New Technologies in Protective Coatings

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“…M. Echeverríaa và các cộng sự đã nghiên cứu biến tính epoxy với silan ứng dụng để bảo vệ chống ăn mòn cho thép. [7] Anna M. Mikhailova và các cộng sự đã nghiên cứu khả năng chịu nhiệt và bảo vệ chống ăn mòn của màng sơn trên cơ sở polyuretan polysiloxan. [8] Với hàm lượng polyuretan thay đổi từ 5-30 %, kết quả cho thấy các mẫu, với hàm lượng polyuretan 5 % và 10 %, có độ ổn định nhiệt và chịu nhiệt tốt nhất.…”

Section: Mở đầUunclassified

Nghiên cứu khả năng bảo vệ chống ăn mòn của màng sơn polyuretan biến tính với trietoxyphenyl silan

Vũ¹,

Oánh²,

Hằng³

et al. 2018

Vietnam Journal of Chemistry

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The polyurethane coatings containing phenylsilane groups (PU-S) were prepared by using the hydrolyzed triethoxyphenylsilane (TEPS). The synthesized PU-S coatings were characterized by Fourier Transform Infrared (FTIR). Mechanical properties and contact angle of PU-S coatings with different TEPS concentrations (1 %, 5 % and 10 %) were also studied. Electrochemical impedance spectroscopy (EIS) and salt spray test were carried out to evaluate corrosion resistance and the macroscopic failures of the coatings. The results show that the presence of TEPS in polyme matrix improved mechanical properties and corrosion protection performance of polyurethane coating.

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“…Of the most promising hybrid systems, silicate-PMMA [15][16][17] and silicate-epoxy [18,19] materials have been extensively investigated with promising results being achieved for the protection of tin, steel and aluminium surfaces. However, these materials still seem to lack the self-healing ability of CCC's [20].…”

Section: Introductionmentioning

confidence: 99%

Correlation between the structure and the anticorrosion barrier properties of hybrid sol–gel coatings: application to the protection of AA2024-T3 alloys

Cullen

Morshed

O’Sullivan

et al. 2017

J Sol-Gel Sci Technol

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Hybrid sol-gel materials have been extensively studied as viable alternatives to toxic chromate (VI)-based coatings for the corrosion protection of AA2024-T3 in the aerospace industry, due to the wide range of available chemistries they offer and the tremendous development potential of innovative functional coatings. However, so far, little work has been performed in identifying the effect of the employed chemistries on the structure and anticorrosion properties of the coatings. This work proposes to contribute to a better understanding of the relationship existing between the structure, morphology and anticorrosion properties of hybrid sol-gel coatings deposited on AA2024-T3 aluminium surfaces, the most widely used alloy in the aerospace industry. The sol-gels are prepared employing two hybrid precursors; an organosilane, 3-trimethoxysilylpropylmethacrylate, and a zirconium complex prepared from the chelation of zirconium n-propoxide, and methacrylic acid. The structure of the hybrid sol-gel formulation is modified by altering the concentration of the transition metal complex. The structure and morphology of the coatings are characterised by dynamic light scattering, fourier transform infrared spectroscopy, silicon nuclear magnetic resonance spectroscopy, differential scanning calorimetry, scanning electron microscopy, atomic-force microscopy and the anticorrosion barrier properties characterised by electrochemical impedance spectroscopy and neutral salt-spray. It is found that the transition metal concentration affected the morphology and structure, as well as the anticorrosion performances of the hybrid sol-gel coatings. A direct correlation between the morphology of the coatings and their final anticorrosion barrier properties is demonstrated, and the optimum material amongst this series is determined to be comprised of a concentration of between 20 and 30% of transition metal.

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Viability of epoxy–siloxane hybrid coatings for preventing steel corrosion

Cited by 43 publications

References 19 publications

Organic-Inorganic Hybrid Coatings for Corrosion Protection of Metallic Surfaces

Organic-Inorganic Hybrid Coatings for Corrosion Protection of Metallic Surfaces

Nghiên cứu khả năng bảo vệ chống ăn mòn của màng sơn polyuretan biến tính với trietoxyphenyl silan

Correlation between the structure and the anticorrosion barrier properties of hybrid sol–gel coatings: application to the protection of AA2024-T3 alloys

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