Corrosion protection evaluation of silica/epoxy hybrid nanocomposite coatings to AA2024

Tavandashti, N. Pirhady; Sanjabi, S.; Shahrabi, T.

doi:10.1016/j.porgcoat.2008.10.010

Cited by 59 publications

(34 citation statements)

References 12 publications

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“…From this point forward, several types of organically-modified sol-gel coatings have been studied for the corrosion protection of aluminium alloys [86][87][88][89][90][91][92][93][94]. Most of them are based on organo-alkoxysilane precursors containing organo-functional groups, like epoxy [84,92,93,[95][96][97][98][99][100][101][102][103][104][105][106][107], methacrylic [36,108], or vinyl [15] that can be polymerized further increasing the coatingʹs density, and thus improving its barrier effect [84]. This shows better anticorrosive properties in comparison to hybrid sol-gel coatings based on non-functional organosilanes.…”

Section: Corrosion Protective Sol-gel Coatings In Aluminium Substratesmentioning

confidence: 99%

“…However, it also decreases wear resistance and mechanical properties, making them prone to physical damage. To overcome this drawback several strategies have been studied, such as the addition of inorganic nanoparticles of silica, aluminium oxide, and other oxides to the sols [83,84,113,119], or the formation of nanostructured films or particles achieved by in situ synthesis during the sol-gel process through controlled hydrolysis/condensation of sol-gel precursors [84,98,116,[120][121][122]. The latter process has the advantage of providing chemical bonds between a hybrid matrix and nanoparticles.…”

Section: Corrosion Protective Sol-gel Coatings In Aluminium Substratesmentioning

confidence: 99%

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Hybrid Sol-Gel Coatings: Smart and Green Materials for Corrosion Mitigation

et al. 2016

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Corrosion degradation of materials and metallic structures is one of the major issues that give rise to depreciation of assets, causing great financial outlays in their recovery and or prevention. Therefore, the development of active corrosion protection systems for metallic substrates is an issue of prime importance. The promising properties and wide application range of hybrid sol-gel-derived polymers have attracted significant attention over recent decades. The combination of organic polymers and inorganic materials in a single phase provides exceptional possibilities to tailor electrical, optical, anticorrosive, and mechanical properties for diverse applications. This unlimited design concept has led to the development of hybrid coatings for several applications, such as transparent plastics, glasses, and metals to prevent these substrates from permeation, mechanical abrasion, and corrosion, or even for decorative functions. Nevertheless, the development of new hybrid products requires a basic understanding of the fundamental chemistry, as well as of the parameters that influence the processing techniques, which will briefly be discussed. Additionally, this review will also summarize and discuss the most promising sol-gel coatings for corrosion protection of steel, aluminium, and their alloys conducted at an academic level.

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Section: Corrosion Protective Sol-gel Coatings In Aluminium Substratesmentioning

confidence: 99%

Section: Corrosion Protective Sol-gel Coatings In Aluminium Substratesmentioning

confidence: 99%

Hybrid Sol-Gel Coatings: Smart and Green Materials for Corrosion Mitigation

et al. 2016

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“…On the other hand, in first immersion intervals the equivalent resistance was due to film resistance and there was no diffusion. The main reactions in this process were investigated as below [23]: Ce 3+ +3(OH -) →Ce (OH) 3 (1) 2Ce (OH) 3 +2(OH -) → 2CeO 2 +4H 2 O+2e -(2) H 2 O+1/2O 2 +2e -→ 2OH -(3) As mentioned in above equations, such species block the cathodic sites, hindering the reduction reaction and consequently, the corrosion rate. This process increased resistance and be constant until break down the iron oxide layer by increasing the immersion times.In this manner, corrosive ions should be transfer from this layer and R ct with CPE dl observed.…”

Section: Healing Property Of Silane Filmmentioning

confidence: 99%

Investigation Self Healing Property of Cerium Nitrate in Organosilane Pretreated Anti Corrosion Coatings

et al. 2012

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The barrier property and self healing behavior of the coating systems containg organosilane and epoxy was investigated. The organosiolane componenet of coatings was doped with cerium nitrate and applied on cold rolled carbon steel substrates. Electrochemical impedance spectroscopy (EIS) and immersion tests were used for assessment of corrosion resistrance behaviour of coatings. Also SEM and EDS techniques were employed to investigate the self healing ability of cerium nitrate. Addition of 2 wt. % of cerium nitrate into the coating solution led to superiour self-healing property for scribed coating systems. Furthermore healing mechanism of cerium nitrate pigments was explained in detail.

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“…This modification of epoxy resin with siloxane via organicinorganic hybrid coating has been studied [10][11][12][13]. Organic-inorganic hybrid materials are the new generation of surface treatment to prevent the corrosion in metals [14].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Polyurethane/Silica Modified Epoxy Polymer Based on 1,3-Propanediol for Coating Application

et al. 2017

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Synthesis of polyurethane/silica modified epoxy polymer using 1, 3-propanediol ABSTRAK Polimer epoksi termodifikasi poliuretan/silica telah disintesis dengan menggunakan bahan dasar 1,3-propanadiol. Sintesis dilakukan dengan mereaksikan senyawa tolonat dan 1,3-propanadiol (rasio berat NCO/OH = 2,5/1) sebagai bahan penyusun poliuretan dengan epoksi diglisidil eter bisfenol A (DGEBA) disertai penambahan katalis dibutiltin dilaurat (DBTL), dimana penambahan poliuretan sebesar 20% (b/b) terhadap berat epoksi. Berdasarkan spektra dari Fourier Transform Infrared (FTIR) dan 1 H-Nuclear Magnetic Resonance ( 1 HNMR) ditunjukkan adanya ikatan baru yang terbentuk dari hasil reaksi gugus isosianat dan gugus hidroksi, yang mana gugus hidroksi ini berasal dari epoksi dan 1,3-propanadiol. Penambahan silika (5, 10, dan 15% b/b terhadap berat epoksi) ke dalam epoksi termodifikasi poliuretan dilakukan melalui reaksi sol gel tetraetil ortosilikat (TEOS

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Corrosion protection evaluation of silica/epoxy hybrid nanocomposite coatings to AA2024

Cited by 59 publications

References 12 publications

Hybrid Sol-Gel Coatings: Smart and Green Materials for Corrosion Mitigation

Hybrid Sol-Gel Coatings: Smart and Green Materials for Corrosion Mitigation

Investigation Self Healing Property of Cerium Nitrate in Organosilane Pretreated Anti Corrosion Coatings

Synthesis of Polyurethane/Silica Modified Epoxy Polymer Based on 1,3-Propanediol for Coating Application

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