Study of a sol–gel process in the preparation of hybrid coatings for corrosion protection using FTIR and 1H NMR methods

2014 ◽  
Vol 396-397 ◽  
pp. 25-35 ◽  
Author(s):  
Peter Rodič ◽  
Jernej Iskra ◽  
Ingrid Milošev
Keyword(s):  
Corrosion Protection ◽  
1H Nmr ◽  
Sol Gel ◽  
Hybrid Coatings ◽  
Sol Gel Process ◽  
Nmr Methods

scholarly journals Corrosion protection of stainless steel by polysiloxane hybrid coatings prepared using the sol–gel process

2010 ◽  
Vol 204 (16-17) ◽  
pp. 2689-2701 ◽  
Author(s):  
V.H.V. Sarmento ◽  
M.G. Schiavetto ◽  
P. Hammer ◽  
A.V. Benedetti ◽  
C.S. Fugivara ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Corrosion Protection ◽  
Sol Gel ◽  
Hybrid Coatings ◽  
Sol Gel Process

scholarly journals Hybrid Sol-Gel Coatings Doped with Non-Toxic Corrosion Inhibitors for Corrosion Protection on AZ61 Magnesium Alloy

Gels ◽  
2022 ◽  
Vol 8 (1) ◽  
pp. 34
Author(s):  
Luis Rodríguez-Alonso ◽  
Jesús López-Sánchez ◽  
Aida Serrano ◽  
Oscar Rodríguez de la Fuente ◽  
Juan Carlos Galván ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Biomedical Applications ◽  
Corrosion Inhibitors ◽  
Sol Gel ◽  
Hybrid Coatings ◽  
Al Alloy ◽  
Ph Measurements ◽  
Sol Gel Process ◽  
Sol Gel Films ◽  
Human Fluid

Physiological human fluid is a natural corrosive environment and can lead to serious corrosion and mechanical damages to light Mg–Al alloys used in prosthetics for biomedical applications. In this work, organic–inorganic hybrid coatings doped with various environmentally friendly and non-toxic corrosion inhibitors have been prepared by the sol-gel process for the corrosion protection of AZ61 magnesium alloys. Effectiveness has been evaluated by pH measurements, optical microscopy, and SEM during a standard corrosion test in a Hanks’ Balanced Salt Solution. The results showed that the addition of an inhibitor to the sol-gel coating can improve significantly the corrosion performance, being an excellent barrier for the L-cysteine-doped hybrid sol-gel films. The incorporation of TiO2 nanoparticles, 2-Aminopyridine and quinine organic molecules slowed down the corrosion rate of the Mg–Al alloy. Graphene oxide seemed to have the same response to corrosion as the hybrid sol-gel coating without inhibitors.

Infrared Characterization of PMMA-SiO2 Hybrid Glasses Obtained by Sol-Gel Process

2010 ◽  
Vol 1278 ◽  
Author(s):  
L.L. Díaz-Flores ◽  
A. S. López Rodríguez ◽  
P. SifuentesGallardo ◽  
M.A. Hernàndez Rivera ◽  
M.a Garnica Romo ◽  
...  
Keyword(s):  
Sol Gel ◽  
Chemical Properties ◽  
Hybrid Coatings ◽  
Force Microscopy ◽  
Air Atmosphere ◽  
Atomic Force ◽  
Sol Gel Process ◽  
Traditional Process ◽  
And Chemical Properties

AbstractThis work is about the production of hybrid coatings of the system SiO2-PMMA (PMMA, polymethylmethacrylate). These materials have interesting mechanical and chemical properties useful for anticorrosive and wear resistance applications. SiO2-PMMA hybrids were obtained by the sol-gel traditional process, using tetraethylorthosilicate (TEOS) and methylmethacrylate (MMA) by Aldrich Co, as starting reagents. The SiO2:PMMA ratio was varied from 0:1 to about 1:1 at air atmosphere deposition. The coatings were obtained on acrylic sheets and silicon wafers. A diversity of coatings with chemical composition ranging from SiO2 and PMMA to obtain the SiO2-PMMA hybrids were obtained. Infrared (IR) and atomic force microscopy (AFM), were performed to determinate structural and morphological behavior.

Synthesis and Characterization of ZnO-SiO2/Epoxy Nanocomposite Coating by Sol-Gel Process

2012 ◽  
Vol 16 ◽  
pp. 1-7
Author(s):  
Nazanin Farhadyar ◽  
Mirabdullah Seyed Sadjadi
Keyword(s):  
Polyethylene Glycol ◽  
Sol Gel ◽  
Nanocomposite Coating ◽  
Contact Angles ◽  
Hybrid Coatings ◽  
Coating Film ◽  
Water Contact ◽  
Unit Form ◽  
Hybrid Solution ◽  
Sol Gel Process

In this paper, we report preparation of hydrophilic hybrid nanocomposite coatings on glass substrates using Zinc acetate solutions based on 3-glycidoxypropyltrimethoxysilane (GPTMS), epoxy resin, aromatic amine (HY850), polyethylene glycol (PEG) and surfactant (polyoxyethylene(4)laurylether) by the sol-gel process. Furthermore, the effects of PEG addition to the precursor solutions on the hydrophilic property and microstructure of the resultant coating film were studied. The hydrophilic behavior study of the synthesized hybrid was performed by adding different amounts of polyethylene glycol precursor to the hybrid solution. Experimental results show that, among different amounts of PEGs, the best results are obtained by addition of PEGs (400) to the hybrid solution which can decrease the water contact angles down to 16 and using surfactant down to 0, and increase the free surface energy. Coated glass exhibits a higher strength than uncoated glass. Attenuated total reflectance infrared spectroscopic (ATR-IR) technique was used to characterize the structure of the hybrid films. The chemical structure of obtained network affects morphology of the coating. The morphology of the hybrid coatings was examined by transmission electron microscopy (TEM). The hybrid systems have a unit form structure and the inorganic phases were in the nanosize scale,

Preparation of scratch resistant superhydrophobic hybrid coatings by sol–gel process

2014 ◽  
Vol 77 (11) ◽  
pp. 1635-1641 ◽  
Author(s):  
Rosa Taurino ◽  
Elena Fabbri ◽  
Doris Pospiech ◽  
Alla Synytska ◽  
Massimo Messori
Keyword(s):  
Sol Gel ◽  
Hybrid Coatings ◽  
Sol Gel Process
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