The early corrosion behaviour of hot dip galvanised steel pre-treated with bis-1,2-(triethoxysilyl)ethane

Montemor, M.F.; Rosqvist, A.; Fagerholm, Heidi M.; Ferreira, M.G.S.

doi:10.1016/j.porgcoat.2004.07.011

Cited by 38 publications

(36 citation statements)

References 12 publications

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“…The spectrum of the ES (Figure A) sample was fitted considering four components at 284.8, 286.8, 288.3, and 291.0 eV. The first component at the lowest binding energy is due to C‐C or C‐H groups arising from the BTSE molecule and to the adventitious carbon groups from surface contamination . The second component is assigned to C‐O groups as reported by Montemor et al The third component is assigned to C=O groups .…”

Section: Resultsmentioning

confidence: 52%

“…The first component at the lowest binding energy is due to C‐C or C‐H groups arising from the BTSE molecule and to the adventitious carbon groups from surface contamination . The second component is assigned to C‐O groups as reported by Montemor et al The third component is assigned to C=O groups . According to Susac et al, the second and third components originate from incomplete hydrolysis of BTSE molecules during silanization, as also reported by reported by Bexell and co‐workers .…”

Section: Resultsmentioning

confidence: 99%

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The effect of surface pretreatment on the corrosion behaviour of silanated AA2198‐T851 Al‐Cu‐Li alloy

Donatus

Klumpp

Mogili

et al. 2018

Surface & Interface Analysis

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The corrosion behaviour of silanated AA2198‐T851 alloy substrates with and with no manufacturing‐process induced near‐surface deformed layer (MPI‐NSDL) has been investigated. Two methods (alkaline etching + desmutting and mechanical polishing) were employed in removing the MPI‐NSDL. Silanization was performed using 2‐bis‐triethoxysilylethane. Electrochemical impedance spectroscopy (EIS), salt spray test, and microscopy techniques were employed in the investigation of the corrosion behaviours. The studies revealed that polishing appeared to be the best silanating pre‐treatment (compared with degreasing and etching + desmutting) for the new generation AA2198‐T851 Al‐Cu‐Li alloy, and this was reflected in the EIS spectra. The etched + desmutted and the degreased surface with MPI‐NSDL did not respond well to silanization and presented more pitting sites per square millimeter. However, the severity of corrosion per pit was more on the polished sample compared with the other two. Also, the corrosion mechanisms were different for the three cases.

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Section: Resultsmentioning

confidence: 52%

Section: Resultsmentioning

confidence: 99%

The effect of surface pretreatment on the corrosion behaviour of silanated AA2198‐T851 Al‐Cu‐Li alloy

Donatus

Klumpp

Mogili

et al. 2018

Surface & Interface Analysis

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“…Silanes are considered for use on various metals: aluminum and aluminum alloys, [11][12][13][14][15][16][17][18][19] copper, 20 steel, 21,22 zinc, 23,24 galvanized and electrogalvanized steel, 22,[25][26][27][28][29][30][31] and more recently on magnesium alloys. [32][33][34][35][36] The behavior of a wide variety of silanes such as c-UPS (c-ureidopropyltriethoxysilane), VS (vinyltriethoxysilane), BTSE (bis-1,2-[triethoxysilyl]ethane), c-APS (c-aminopropyltriethoxysilane), etc., has been studied, and the study has shown them to be effective anticorrosive agents if applied in appropriate process conditions.…”

Section: Silane Chemistrymentioning

confidence: 99%

Corrosion resistance of steel treated with different silane/paint systems

et al. 2010

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This article reports on a comparative study on the corrosion resistance of low-carbon steel substrates pretreated with different silane solutions and painted. The pure silanes used to pretreat the steel panels were 3-aminopropyltriethoxysilane (c-APS), 3-glycidoxypropyltrimethoxysilane (c-GPS), and bis(3-triethoxysilylpropyl)amine. The study also considered other silane solutions with ureido, amino, and epoxy organofunctional groups, and two bis-functional silanes: bis(c-trimethoxysilylpropyl)amine (BAS) and 1,2-bis(triethoxysilyl)ethane (BTSE). A conventional phosphate-type pretreatment was also applied for reference purposes. The pretreated panels were then finished with an alkyd/polyester aminoplast base paint. As a branch test, an acrylic/urethane paint was also applied. Different tests were conducted to evaluate the anticorrosive ability of the different silane/paint systems: outdoor exposure in an atmosphere of moderate aggressivity; accelerated corrosion test (salt fog test); and electrochemical impedance spectroscopy (EIS). The results show that the steel pretreated with certain silanes, especially c-APS, yields similar results to steel subjected to conventional phosphate pretreatment.

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“…1,2 Various organo functional silanes are available in the market today. Applied on different metallic substrates (as zinc, 3,4 steel, [5][6][7] aluminum, 3,8,9 magnesium alloy 10 ), they have been widely studied from both formation and performance points of view. 11 A functional bis-silane, X 3 Si-Y-SiX 3 , is a compound where Y is a hydrocarbon chain which can also include a functional group.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical behavior of carbon steel pre-treated with an organo functional bis-silane filled with copper phthalocyanine

Suegama

Aoki

2008

J. Braz. Chem. Soc.

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Neste trabalho, depositou-se sobre aço carbono o filme de bis-[trimetoxisililpropil]amina (BTSPA) adicionado de ftalocianina de cobre (Cu-Ph). Na obtenção desse filme variou-se as concentrações de Cu-Ph e a temperatura de cura (120 e 150 °C) e nas amostras curadas à 150°C, adicionou-se uma segunda camada. O comportamento eletroquímico do aço carbono recoberto com o filme aditivado com Cu-Ph foi estudado por técnicas eletroquímicas (medidas de espectroscopia de impedância eletroquímica e curvas de polarização) em solução aerada de NaCl 0,1 mol L -1 . A caracterização física e química foi feita por análise termogravimétrica (TGA), microscopia eletrônica de varredura, medidas de ângulo de contato e espectroscopia de infravermelho. A TGA não mostrou decomposição da Cu-Ph durante o processo de cura e a quantidade de Cu-Ph adicionada ao filme polissilânico apresentou forte influência na resistência à corrosão, principalmente quando a amostra é curada a 150 °C. Os resultados mostraram que menores concentrações de inibidor forneceram maior resistência à corrosão e a segunda camada aumentou em uma ordem de grandeza a resistência à corrosão.The bis-[trimethoxysilylpropyl]amine (BTSPA) film filled with copper phthalocyanine (Cu-Ph) was prepared by adding different concentrations of copper phthalocyanine -Cu-Ph and deposited on a carbon steel substrate using 120 ºC and 150 ºC as curing temperatures. For samples cured at 150 ºC a second layer was also deposited. The electrochemical behavior of carbon steel coated with BTSPA filled with Cu-Ph was studied by electrochemical measurements, electrochemical impedance spectroscopy (EIS) and polarization curves, in aerated 0.1 mol L -1 NaCl solution. Physical and chemical characterization was made by thermogravimetric analysis (TGA), scanning electron microscopy, contact angle measurements and infrared spectroscopy. TGA showed no decomposition of Cu-Ph during the curing process. Cu-Ph added into the silane film showed a strong influence on its corrosion resistance, mainly when the samples are cured at 150 ºC. The results showed that lower inhibitor concentrations led to a higher corrosion resistance and the second layer increased by one order of magnitude the corrosion resistance.

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The early corrosion behaviour of hot dip galvanised steel pre-treated with bis-1,2-(triethoxysilyl)ethane

Cited by 38 publications

References 12 publications

The effect of surface pretreatment on the corrosion behaviour of silanated AA2198‐T851 Al‐Cu‐Li alloy

The effect of surface pretreatment on the corrosion behaviour of silanated AA2198‐T851 Al‐Cu‐Li alloy

Corrosion resistance of steel treated with different silane/paint systems

Electrochemical behavior of carbon steel pre-treated with an organo functional bis-silane filled with copper phthalocyanine

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