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Improved corrosion resistance of AA2024 alloys through hybrid organic-inorganic sol-gel coatings produced from sols with controlled polymerisation
(Elsevier Science Sa, 2009-03)
In this work we present the development of a nanocomposite material composed by silica nanoparticles in a hybrid organic-inorganic sol-gel matrix for corrosion protection of aluminium alloys. The sol-gel matrix was produced ...
Development of silver clusters in hybrid organic-inorganic sol-gel coatings
(Brazilian Association for Synchrotron Light Technology, 2011-12)
A silver doped hybrid organic-inorganic sol-gel coating was developed through the hydrolytic condensation of tetraethoxysilane (TEOS) and methyl-triethoxysilane (MTES). Silica nanoparticles were added in order to give a ...
Siloxanes synthesized “in situ” by sol–gel process for fire control in wood of Araucaria angustifolia
(Elsevier, 2013-10)
Panels of Araucaria angustifolia were chemically modified with alkoxysilanes, hydrolyzed and condensed “in situ” by the sol–gel process. Alkoxysilanes selected were aminopropyl methyldiethoxysilane (A), aminopropyl ...
Electrochemical characterization of sol-gel hybrid coatings in cobalt-based alloys for orthopaedic implants
(Elsevier Science, 2005-07)
Cobalt-based alloys are widely used for the fabrication of several devices that are surgically implanted in the body due to their good corrosion and wear resistance as well as their good biocompatibility. However, the ...
CeO 2 nanoparticles for the protection of photosynthetic organisms immobilized in silica gels
(American Chemical Society, 2011-03)
Synthetic cytocompatible CeO 2 nanoparticles embedded in transparent silica hydrogels are useful for creating inorganic supports favoring the long-term entrapment of living Chlorella vulgaris cells. The key protective role ...
Preparation and characterization of cerium doped silica sol–gel coatings on glass and aluminum substrates
(Elsevier Science, 2004-11-30)
Chromates are among the most common substances used as corrosion inhibitors. However, these compounds are highly toxic, and an intense effort is being undertaken to replace them. Cerium compounds seem to fulfil the basic ...
Tuning morphology of siloxane bond-based polybenzoxazines by controlling the sol–gel and curing processes
(John Wiley & Sons Inc, 2021-06)
Novel polybenzoxazine/polysilsesquioxane nanocomposites were synthesized with uniform and reproducible structural morphology, high Tg, and good thermal stability. Polysilsesquioxane was oriented in a nanometer-size lamellar ...
Hybrid sol-gel coatings produced from TEOS and y-MPS
(Springer, 2003-08)
Hybrids sols from tetraetoxysilane (TEOS) and 3-(methacryloxypropyl) trimethoxysilane (γ-MPS) were prepared in acid medium for different TEOS/γ-MPS ratios and were modified by the addition of a colloidal silica suspension. ...
Sol-gel technology for greener and more sustainable antimicrobial textiles that use silica matrices with C, and Ag and ZnO as biocides
(Elsevier Inc, 2021-09-25)
Based on the philosophy of Green Chemistry, in order to grant antimicrobial properties to fabrics, in this work a 100% cotton fabric was used impregnating silver (Ag) and zinc oxide (ZnO) with the addition of carbon extracted ...
58S and 68S sol-gel glass-like bioactive coatings for enhancing the implant performance of AZ91D magnesium alloy
(Elsevier Science SA, 2020-10)
Magnesium alloys such as AZ91D, has been presented as potential material for temporary implant material since it has a mechanical performance suitable with bone tissue and also degrades in time. The fast degradation at ...