Effect of functional groups (methyl, phenyl) on organic–inorganic hybrid sol–gel silica coatings on surface modified SS 316

Kumar, Neeraj; Jyothirmayi, A.; Raju, K. R. C. Soma; Subasri, R.

doi:10.1016/j.ceramint.2012.05.040

Cited by 30 publications

(14 citation statements)

References 20 publications

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“…Nevertheless, only the most representative published in the last decade, will be referred. Several iron-based substrates have been studied, such as carbon steel [46,[59][60][61][62][63], 304, and 316 stainless steel [47,[64][65][66][67][68][69]. Chou et al [70] in 2003 produced hybrid coatings by copolymerizing TEOS and 3-methacryloxypropyltrimethoxysilane (MAPTS) ( Figure 5) in a two-step acid-catalyzed process.…”

Section: Corrosion Protective Sol-gel Coatings In Steel Substratesmentioning

confidence: 99%

“…This shows better anticorrosive properties in comparison to hybrid sol-gel coatings based on non-functional organosilanes. Some other functional groups could be present, like phenyl [68,109], which is used to increase coatings hydrophobicity or phosphonate [55,110,111], which is used to improve bonding to the substrate. Therefore, the different organic groups are used to achieve tailored properties of the sol-gel coatings including compatibility with organic paints systems.…”

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 Steel 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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“…In order to facilitate efficient application, bath pot-life were further improved by addition of GPTMS (prehydrolyzed), as shown in Figure 5. Bath pot-life mainly depends on the nature of silane precursor, silane functionality (number of Si-OR groups), pH, alcohol/water ratio, temperature and concentration of precursor [38][39][40][41]. These factors can be controlled to balance bath pot-life and performance of OIH films.…”

Section: Bath Pot-lifementioning

confidence: 99%

Corrosion Protection of Aluminum Alloy by Sol-Gel Derived Organic-Inorganic Hybrid Pretreatments Based on Epoxy Resin Modified Silane Precursor

Niknahad

Patel

Mannari

2016

J. Coat. Sci. Technol.

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Organic-Inorganic hybrid (OIH) derived by sol-gel process have emerged as promising pretreatments alternative to conventional chromate-based systems for aluminum alloys.In this study novel organo-silane precursor has been synthesized from epoxy resin and amino-silane compound and used as the primary component of OIH film. The effects of epoxy and silane functionality and organic inhibitor used in the composition have been studied on corrosion resistance performance of aluminum alloy (3003-H14). The study also investigates the performance of top coat (powder coating) adhesion onto the pretreatment under different cure conditions. The chemical structure of sol-gel precursor (epoxy silane) and the deposited films have been characterized by FTIR analysis. The corrosion protection performance has been studied by electrochemical impedance spectroscopy (EIS), D.C. electrochemical polarization measurements, and the accelerated neutral salt spray test (ASTM B117). This study shows that by proper choice of precursor structure, functionality, processing conditions, and corrosion inhibitor amount, it is possible to derive OIH films with corrosion resistance performance comparable to conventional Cr (VI) based pretreatments.

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“…1,2 The chemistry of silanes [3][4][5] and the mechanism of interaction of these molecules with different metallic substrates such as mild steel, 6,7 aluminum and aluminum alloys, [8][9][10][11][12] galvanized steel 13,14 and stainless steels [15][16][17][18] have been widely studied. 1,2 The chemistry of silanes [3][4][5] and the mechanism of interaction of these molecules with different metallic substrates such as mild steel, 6,7 aluminum and aluminum alloys, [8][9][10][11][12] galvanized steel 13,14 and stainless steels [15][16][17][18] have been widely studied.…”

Section: Introductionmentioning

confidence: 99%

Impact of curing on the corrosion performance of an eco-friendly silane sol–gel coating on 304L stainless steel

2015

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In this study, the effect of curing on the structure and protective performance of an eco-friendly silane solgel coating on stainless steel 304L was investigated using electrochemical methods as well as surface analysis. The hybrid film consisting of tetraethoxysilane, methyltriethoxysilane and g-glycidyloxypropyltrimethoxysilane was applied on the substrate via a sol-gel route. The electrochemical noise data indicated that the corrosion of stainless steel in a 3.5% sodium chloride solution is more effectively prevented through application of a coating cured at a higher temperature for a longer time.According to the Fourier transform infrared spectroscopy spectra, field emission scanning electron microscopy images and water contact angle analysis, the behavior was attributed to the formation of a highly crosslinked siloxane network by increasing the curing time and temperature. Consistent with the results of electrochemical noise measurements, electrochemical impedance spectroscopy data showed the significant effect of curing time and temperature on the hybrid silane film structure. Fig. 1 Time records of electrochemical current noise for samples (a) S7 (b) S3 after 7 days of immersion in 3.5 wt% NaCl solution. 43228 | RSC Adv., 2015, 5, 43225-43233 This journal is

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Effect of functional groups (methyl, phenyl) on organic–inorganic hybrid sol–gel silica coatings on surface modified SS 316

Cited by 30 publications

References 20 publications

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

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

Corrosion Protection of Aluminum Alloy by Sol-Gel Derived Organic-Inorganic Hybrid Pretreatments Based on Epoxy Resin Modified Silane Precursor

Impact of curing on the corrosion performance of an eco-friendly silane sol–gel coating on 304L stainless steel

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