Synthesis of hybrid sol-gel coatings for corrosion protection of we54-ae magnesium alloy

Barrios, Carlos Andrés Hernández; Duarte, N Z; Hernández, Leonardo; Ballesteros, Darío Yesid Peña; Coy, A.E.; Viejo, F.

doi:10.1088/1742-6596/466/1/012011

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…Therefore, the epoxy group of GPTMS is known to be able to encourage crosslinking with inorganic networks such as silicon found in TEOS, which can provide better mechanical properties, corrosion resistance, and flexibility of coatings [33][34][35] In addition, organic silanes increasing the flexibility and ductility of coatings, with decreased curing temperature and time [36,37]. As a result, the applied sol-gel films are expected to have lower cracking sensitivity, less porosity, high flexibility and corrosion resistance [38,39]. Tong et al (2019), investigated alkoksysilane modified coatings and they indicated in order to obtain excellent anti-corrosion performance, super hydrophobic coating is required in their study.…”

Section: Introductionmentioning

confidence: 99%

“…They emphasized that the coating surfaces with minimum cracks are hydrophobic and their corrosion resistance is higher [40]. In different studies using TEOS and GPTMS, it was observed that the cracked structures decreased and the mechanical properties increased in hybrid coatings or in different forms of gelling [32][33][34][35][36][37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of SiO2 sol-gel coated Ti6Al4V alloy obtained by using TEOS and GPTMS

et al. 2021

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Synthesis of silicon oxide (SiO2) via the sol-gel method and SiO2 coating ability on to Ti6Al4V alloy were investigated, in the novel study. Ti6Al4V alloy is the most used alloy in biomedical applications due to its many advantages. However, it has a minor disadvantage like releasing ions into the human body. In this study, the substrate material Ti6Al4V alloy samples were coated using the sol-gel method with alkoxysilane solutions (tetraethyl orthosilicate, TEOS; Si(OC2H5)4 and glycidoxypropyltrimethoxysilane, GPTMS; C9H20O5Si) containing the unit of prepared Si(OR)n after the surface preparations were made. The prepared solutions were examined using thermal analysis methods and the process temperatures to be applied to the coatings were determined according to the results of the analysis. Coated samples were subjected to aging, drying, and sintering processes at specified temperatures. The morphologies and structures of the samples were investigated by using a scanning electron microscope with energy-dispersive spectroscopy (SEM-EDS) and X-ray diffraction (XRD). The sol-gel coating ability of the silicon oxide on the surface of the Ti6Al4V alloys has been discussed. The results demonstrate that cracks were observed in coating produced by TEOS precursor whereas the coatings used GPTMS precursor exhibited crack-free surface independently of dipping number. The crack formation tended to reduce with increasing dipping number of coatings produced by TEOS precursor. Distances between coating islets gradually became smaller as the number of dippings increased, and the continuity of the coatings increased. It has been observed that SiO2 coating layers produced with GPTMS are obtained in a more continuous and crack-free form than the layers produced with TEOS.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of SiO2 sol-gel coated Ti6Al4V alloy obtained by using TEOS and GPTMS

et al. 2021

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Corrosion resistance of sol–gel alumina coated Mg metal in 3.5 % NaCl solution

Singh

Gupta

Maheshwari

et al. 2014

J Sol-Gel Sci Technol

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This investigation describes the potential of sol-gel derived alumina coating on the corrosion resistance of magnesium metal in 3.5 % NaCl solution. Coating deposition was performed by dip coating technique using boehmite (AlOOH) sol followed by their sintering at 250°C. EDX and FTIR analysis confirmed that alumina is a main constituent of the coating. Microstructural examination of the coated surface demonstrated amorphous nature of coating of 2-3 lm in thickness. Potentiodynamic polarization and electrochemical impedance measurements indicated a considerable improvement in the corrosion resistance of the coated substrates.

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Effect of fluoride conversion pretreatment time and the microstructure on the corrosion performance of TEOS-GPTMS sol–gel coatings deposited on the WE54 magnesium alloy

Duran

Barrios

Coy

et al. 2021

Journal of Materials Research and Technology

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Synthesis of hybrid sol-gel coatings for corrosion protection of we54-ae magnesium alloy

Cited by 5 publications

References 9 publications

Characterization of SiO2 sol-gel coated Ti6Al4V alloy obtained by using TEOS and GPTMS

Characterization of SiO2 sol-gel coated Ti6Al4V alloy obtained by using TEOS and GPTMS

Corrosion resistance of sol–gel alumina coated Mg metal in 3.5 % NaCl solution

Effect of fluoride conversion pretreatment time and the microstructure on the corrosion performance of TEOS-GPTMS sol–gel coatings deposited on the WE54 magnesium alloy

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