The corrosion resistance of hot dip galvanized steel pretreated with Bis-functional silanes modified with microsilica

Montemor, M.F.; Cabral, Ana M.T.D.P.V.; Zheludkevich, Mikhail L.; Ferreira, M.G.S.

doi:10.1016/j.surfcoat.2004.11.012

Cited by 113 publications

(67 citation statements)

References 19 publications

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“…1 The search for more ecological alternatives to chromating for the protection of metallic structures has led to the development of different types of nontoxic and environmentally friendly coatings. In this respect, mention may be made of low temperature cationic plasma deposition 2 ; sol-gel coatings 3 ; silane solutions 4,5 ; and even silanes modified with rare earth salts, 6-8 SiO 2 9 and inhibitors. 10 Silane-based pretreatments have emerged as a potentially valuable alternative to the use of phosphates and chromates.…”

Section: Introductionmentioning

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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Section: Introductionmentioning

confidence: 99%

Corrosion resistance of steel treated with different silane/paint systems

et al. 2010

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“…At low frequency range, 1-0.1 Hz, all magnets exhibited a time constant indicating that the electrochemical activity at the coating/substrate interface is taking place. The high phase angle at low frequency observed on these samples could be related to diffusion controlled processes at local nickel coating defects which stimulate pit formation and propagation [16].…”

Section: Resultsmentioning

confidence: 89%

Corrosion Behaviour of a Silane Protective Coating for NdFeB Magnets in Dentistry

Calabrese

Caprì

Fabiano

et al. 2015

International Journal of Corrosion

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The corrosion behavior of coated and uncoated Ni/Cu/Ni rare earth magnets was assessed at increasing steps with a multilayering silanization procedure. Magnets' durability was analyzed in Fusayama synthetic saliva solution in order to evaluate their application in dental field. Corrosion performance was evaluated by using polarization and electrochemical impedance spectroscopy in synthetic saliva solution up to 72 hours of continuous immersion. The results show that the addition of silane layers significantly improved anticorrosion properties. The coating and aging effects, in synthetic saliva solution, on magnetic field were evaluated by means of cyclic force-displacement curves.

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“…The previous research of Van Ooij and his colleagues demonstrated that SiO 2 nano-particles enhanced corrosion resistance by producing stable silicate during the corrosion process (Palanivel, V. et al, 2005). The works of Montemor showed that SiO 2 and CeO 2 activated with cerium ions performed better than the single nano-particles (e.g., Montemor, 2006, p. 2875-2885, and Montemor, 2009.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Corrosion Resistance of Silane Film Modified with SiO2 Nano-Particles on Zinc Coatings

Gu¹,

Zhang²,

Zhong³

et al. 2017

dtmse

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The present work investigated the electrochemical behavior of zinc plate treated with 3-(Aminopropyl)triethoxysilane, 3-(Trimethoxysilyl)propyl methacrylate solutions containing TiF62-, ZrF62-and modified with different concentrations of nano-particles. The morphologies of passivation films before and after immersion were characterized by scanning electron microscopy (SEM). Complementary studies were carried out with electrochemical impedance spectroscopy (EIS) and neutral salt spray test (NSS). The result showed that there are a layer of continuous and uniform film on the surface of substrate, and the film kept stable during the early period of immersion. The scanning electrochemical microscopy together with EIS showed that the anticorrosion ability increased with the rise of SiO2 nano-particles concentration, which leaded to enhanced resistance in return by higher density of corrosion.

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The corrosion resistance of hot dip galvanized steel pretreated with Bis-functional silanes modified with microsilica

Cited by 113 publications

References 19 publications

Corrosion resistance of steel treated with different silane/paint systems

Corrosion resistance of steel treated with different silane/paint systems

Corrosion Behaviour of a Silane Protective Coating for NdFeB Magnets in Dentistry

Evaluation of Corrosion Resistance of Silane Film Modified with SiO2 Nano-Particles on Zinc Coatings

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