The Sol-Gel Synthesis and Application of Some Anticorrosive Coating Materials

Sayılkan, H.; Şener, Ş.; Sener, Ersin; Sülü, M.

doi:10.1023/b:masc.0000023514.74970.73

Cited by 27 publications

(15 citation statements)

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“…The mean thickness of all the coatings (n=4 for each temperature), is 15 µm ± 1 µm. This value of thickness is comparable (10-12 µm) to the ones measured for anti-corrosion organic-inorganic hybrid silane sol-gel coatings prepared using N- propyl]ethylenediamine, 3-aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, and 3-methacryloxypropyl-trimethoxysilane on aluminum and iron plates 23 . However, the thicknesses obtained for the deposited coatings, by sol-gel, were lower than both the thickness obtained using aminosilane-epoxy deposited on AA2024-T3 and epoxysilane-epoxy on AA7075-T6 (30-50 µm) [24] and to the ceramer coatings developed using soybean oil as the organic phase with mixtures of titanium isopropoxide and zirconium propoxide as the inorganic phase (45-95 µm) [25] .…”

Section: Physical Characterizationsupporting

confidence: 76%

Environmentally friendly sol - gel-based anticorrosive coatings on aluminum alloy 2024

et al. 2013

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Chromate coatings used as corrosion protection technologies for aluminum alloys are environmentally harmful and extremely toxic. This paper presents an investigation on the deposition of environmentally friendly cerium oxide-based anticorrosive coatings on aluminum alloy 2024 substrates by the sol-gel method. The influence of the calcination temperature on both the microstructural characteristics and the electrochemical corrosion performance was tested using scanning electron microscopy, X-ray diffraction, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS), before and after, periods of immersion in saline corrosive solutions. The ceramic coatings synthesized at 200, 300 and 400 °C showed very resistive behaviors leading to both an efficient passivation of the alloy surfaces and good corrosion protection. This passivation was maintained for 30 days of immersion in saline solutions, as well as, when aggressive electrochemical polarization experiments (until 2.0 V versus saturated calomel electrode) were used. Very high resistances for the charge transfer (0.14-0.28 GΩ) and very low current density values (5 × 10 -14 -5 × 10 -11 A cm -2 ) were estimated by EIS and potentiodynamic polarization, respectively, for coatings prepared at 200-400 °C. Thus, the coatings prepared in this study by the sol-gel method appear as an efficient treatment for the corrosion protection of aluminum alloys.

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Section: Physical Characterizationsupporting

confidence: 76%

Environmentally friendly sol - gel-based anticorrosive coatings on aluminum alloy 2024

et al. 2013

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“…In the last few decades, several types of organic-based coatings have been developed [85], including anti-fouling paints [70,[86][87][88][89][90][91][92][93][94], composites and nano-coatings [94][95][96], self-healing coatings [97][98][99][100][101][102][103][104][105][106][107], and hybrid sol-gel materials [98,[108][109][110][111][112][113][114][115][116][117][118][119][120][121] among others. However, as far as the authors' knowledge, very few studies were performed on OWSs using self-healing and hybrid sol-gel coatings.…”

Section: Coating Systemsmentioning

confidence: 99%

Corrosion Protection Systems and Fatigue Corrosion in Offshore Wind Structures: Current Status and Future Perspectives

Price

Figueira

2017

Coatings

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Concerns over reducing CO 2 emissions associated with the burning of fossil fuels in combination with an increase in worldwide energy demands is leading to increased development of renewable energies such as wind. The installation of offshore wind power structures (OWS) is one of the most promising approaches for the production of renewable energy. However, corrosion and fatigue damage in marine and offshore environments are major causes of primary steel strength degradation in OWS. Corrosion can reduce the thickness of structural components which may lead towards fatigue crack initiation and buckling. These failure mechanisms affect tower service life and may result in catastrophic structural failure. Additionally, environmental pollution stemming from corrosion's by-products is possible. As a result, large financial investments are made yearly for both the prevention and recovery of these drawbacks. The corrosion rate of an OWS is dependent on different characteristics of attack which are influenced by access to oxygen and humidity. Structural degradation can occur due to chemical attack, abrasive action of waves, and microorganism attacks. Inspired by technological and scientific advances in recent years, the purpose of this paper is to discuss the current protective coating system technologies used to protect OWS as well as future perspectives.

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“…Sayilkan et al developed an organic-inorganic coating on aluminium and iron plates using different alkoxysilanes and they show that in most cases the durability of the coating was satisfactory [7]. Parkhill et al applied water based epoxide ormosil coatings on aluminium panels using 3-glycidoxypropyl trimethoxysilane (GPTMS) and TEOS as precursors, they characterized film thickness and morphology and evaluated the overall corrosion performance [8].…”

Section: Introductionmentioning

confidence: 99%

Study of the thermal degradation of bioactive sol–gel coatings for the optimization of its curing process

Hernández-Escolano

Ramis

Jiménez-Morales

et al. 2011

J Therm Anal Calorim

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Abstract:A set of materials has been prepared by sol-gel process containing different quantities of hydroxyapatite (0, 2.5 and 5% HAp w/w) using as silica precursors glycidyloxypropyltrimethoxysilane (GPTMS) and tri-ethoxyvinylsilane (VTES). In order to optimize the curing process to obtain sintherized systems (inorganic network) or hybrid systems (organic-inorganic) a TG and FTIR studies have been developed and degradation kinetic triplet parameters were obtained (the activation energy, pre-exponential factor, and function of degree of conversion). The kinetic study was analyzed by means of an integral isoconversional non-isothermal procedure (model free), and the kinetic model was determined by the Coats-Red-fern method and through the compensation effect (IKR). All the systems followed the n = 6 kinetic model. The addition of HAp increases the thermal stability of the systems. The isothermal degradation was simulated from non-isothermal data, and the curing process could be defined to obtain the two types of materials. Temperature under 250 º C allows the formation of hybrids networks.

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The Sol-Gel Synthesis and Application of Some Anticorrosive Coating Materials

Cited by 27 publications

References 0 publications

Environmentally friendly sol - gel-based anticorrosive coatings on aluminum alloy 2024

Environmentally friendly sol - gel-based anticorrosive coatings on aluminum alloy 2024

Corrosion Protection Systems and Fatigue Corrosion in Offshore Wind Structures: Current Status and Future Perspectives

Study of the thermal degradation of bioactive sol–gel coatings for the optimization of its curing process

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