Performance of titania–silica composite coating on interstitial-free steel sheet

Rout, Tapan Kumar; Bandyopadhyay, N.; Narayan, Ramanuj; Rani, Nitu; Sengupta, Dilip K.

doi:10.1016/j.scriptamat.2007.10.046

Cited by 24 publications

(10 citation statements)

References 22 publications

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“…23,26,27 The presence of Ti-O-Si peak at 930 cm À1 indicates the reaction has occurred between the free -OH of titania sol and that of free -OCH 3 group of the coupling agent. 24 There is no indication of Ti-O-N linkage in the given FTIR spectra, which indicates the delocalization of the nitrogen electron pair to the phenyl ring so that it is not available for donating to the vacant d-orbital of Ti. Another possibility is that phenyl groups (bulky in nature) present in N-phenyl-3-aminopropyl triethoxy silane hinder the donation of nitrogen lone pair to the vacant 3d-orbital of Ti.…”

Section: Ftir Studymentioning

confidence: 94%

“…[21][22][23][24] After 24 h of aging, N-phenyl-3-aminopropyl triethoxy silane was added slowly into the titania precursor in 1:1 (v/v) mixing ratio at room temperature (RT). Above synthesized sol-gel solution (mixture of titania precursor and N-phenyl-3-aminopropyl triethoxy silane) was applied on the phosphated sheet by the dipping process and the dipping time was 1 min at RT, followed by slow drying at the rate of 20°C/m and finally dried at 150°C for 1 h.…”

Section: Preparation Of Sol-gel Solutionmentioning

confidence: 99%

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Corrosion behavior of nanohybrid titania–silica composite coating on phosphated steel sheet

et al. 2011

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Corrosion resistance behavior of sol-gelderived organic-inorganic nanotitania-silica composite coatings was studied. Hybrid sol was prepared from Ti-isopropoxide and N-phenyl-3-aminopropyl triethoxy silane. The structure, morphology, and properties of the coating were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermo gravimetric analysis. The corrosion performances of the sol-gel-coated samples were investigated by electrochemical impedance spectroscopy (EIS) and standard salt spray tests. The hybrid coatings were found to be dense, more uniform, and defect free. In addition, the coatings also proved its excellent corrosion protection on phosphated steel sheet.

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Section: Ftir Studymentioning

confidence: 94%

Section: Preparation Of Sol-gel Solutionmentioning

confidence: 99%

Corrosion behavior of nanohybrid titania–silica composite coating on phosphated steel sheet

et al. 2011

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“…3-Glycidoxy propyl trimethoxy silane (GPTMS) and other silane-coupling agents are added, and the sol temperature was set at 608C. The detailed analysis of the sol was explained elsewhere, as discussed by Rout et al (2008). IF steel sheet was used for the present investigation.…”

Section: Methodsmentioning

confidence: 99%

“…The FT-IR spectrum in Figure 4 show the absorption bands of the OZH stretching (3,700-3,200 cm 2 1 ), CO stretching (1,647 cm 2 1 ) and NH in stretching vibration mode at 2,920 cm 2 1 . The bands corresponding to TiZOZTi vibrations were observed at 550-900 cm 2 1 and SiZOZSi vibrations were at 1,000-1,200 cm 2 1 (Rout et al, 2008). A heat-up profile was recorded in the FT-IR spectrometer to investigate the thermo stability of the coating.…”

Section: Determination Of Locus Of Failure With Xps and Sem/edxmentioning

confidence: 99%

The effect of dye molecules in titania‐silica hybrid coatings for corrosion protection

Rout

2010

Anti-Corrosion Methods and Materials

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Purpose -The purpose of this paper is to develop a corrosion resistant zinc-free coating for interstitial free steel. Design/methodology/approach -The objective was achieved by developing a titania-silica hybrid coating through a sol-gel process by incorporating a dye molecule. The role of dye molecules was particularly important for enhancing the anti-corrosion properties of the coating. The approach of current research was to develop a low-temperature coating process that can bring similar performance to that obtained in case of zinc coating. Titania and silica precursors were mixed by stirring under a nitrogen atmosphere at 808C to formulate a low-temperature coating. The dye molecules were added before addition of water for subsequent hydrolysis. This complete formulation was applied over steel sheets using a roll coater as the application method. Findings -The ranking order of improved corrosion resistance was found to be PATMS . EETMS . GPTMS and the addition of trace amount of tartrazine dye (60-65 mg/l of liquid) in PATMS increased the corrosion service life in saline environments from 168 to 216 h, thus showing a promising improvement. Scanning Kelvin Probe results indicated that the corrosion reaction is controlled cathodically in presence of dye and, electrochemical impedance spectroscopy results exhibited a charge transfer resistance (Ct) of coating with dye of 419V cm 2 , which was higher than that of a similar coating without dye (360V cm 2 ), indicating increased corrosion protection. Research limitations/implications -This coating had improved barrier protection but lacked cut edge protection. Future work will focus on adding sacrificial protection by introducing compatible corrosion inhibitors, especially dye molecules, which are photosensitive. Practical implications -This coating has huge potential for use in the automotive sector, especially for certain automotive parts (i.e. helm flanges), which suffer from poor durability in salty and high-humidity atmospheres. Social implications -Since this coating formulation utilises a partially aqueous base, some environmental impact cannot be avoided, but it will have less impact than a complete solvent base formulation. Originality/value -The novelty of the work was the introduction of dye molecules as the corrosion inhibitor and their compatibility in the hybrid coating system.

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“…In addition, the sol-gel method is a relatively simple process that allows the deposition of vitreous, ceramic and organic inorganic hybrid dense layer on different substrates below 500°C (Ruhi et al, 2008). Prevention of steel corrosion by various processing has been tested using different materials as protective coatings such as SiO 2 (Koh et al, 2011), TiO 2 (Rout et al, 2008), Al 2 O 3 (Tiwari et al, 2011), ZrO 2 (Izumi et al, 1989), borosilicate (Guglielmi et al, 1992) or mix oxides coating of these have been reported to offer corrosion protection.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical property analysis of SiO₂-Al₂O₃-coated steel by electrochemical impedance spectroscopy

Kirtay

2017

ACMM

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Purpose The purpose of this paper is to investigate the corrosion resistance of SiO2-Al2O3 coating on mild steel. Design/methodology/approach SiO2-Al2O3 was coated using sol-gel method, and electrochemical measurements were applied to assess the performance of the coated steel. Findings The main conclusion is that SiO2-Al2O3-coated specimens acquired a higher corrosion resistance than that of uncoated specimen. icorr values of the coated specimens were between 12 and 14 times smaller than those of uncoated specimen. The coated specimens exhibited a higher Rcor value at electrochemical impedance spectroscopy analysis. The high values of Rcor and low values of CPEdl observed within the SiO2-Al2O3-coated samples imply an improved anti-corrosion capability. Originality/value In this work, there are three points of originality. First, steel specimens were coated with ormosil-based solution by applying sol-gel dip coating method. Second, both SiO2 and Al2O3 coatings were applied simultaneously at a considerably low temperature, i.e. 200 Â°C. Finally, the performance of the coated materials against wet corrosion was improved significantly.

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Performance of titania–silica composite coating on interstitial-free steel sheet

Cited by 24 publications

References 22 publications

Corrosion behavior of nanohybrid titania–silica composite coating on phosphated steel sheet

Corrosion behavior of nanohybrid titania–silica composite coating on phosphated steel sheet

The effect of dye molecules in titania‐silica hybrid coatings for corrosion protection

Electrochemical property analysis of SiO₂-Al₂O₃-coated steel by electrochemical impedance spectroscopy

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Performance of titania–silica composite coating on interstitial-free steel sheet

Cited by 24 publications

References 22 publications

Corrosion behavior of nanohybrid titania–silica composite coating on phosphated steel sheet

Corrosion behavior of nanohybrid titania–silica composite coating on phosphated steel sheet

The effect of dye molecules in titania‐silica hybrid coatings for corrosion protection

Electrochemical property analysis of SiO2-Al2O3-coated steel by electrochemical impedance spectroscopy

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Electrochemical property analysis of SiO₂-Al₂O₃-coated steel by electrochemical impedance spectroscopy