Preparation and characterization of anticorrosion Ormosil sol–gel coatings for aluminum alloy

Pan, Xiaoming; Wu, Junsheng; Ge, Yu; Xiao, Kui; Luo, Hong; Gao, Shujun; Li, Yong

doi:10.1007/s10971-014-3414-5

Cited by 19 publications

(9 citation statements)

References 43 publications

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“…In this case, the coating is uniform, dense and full coverage, as well as shows good corrosion protective performance. Comparing with similar work, such as the addition of cerium salts [31,32], nanoparticles [11,33] and organic functional group [14,34] for improving sol-gel coating properties, appropriate addition of APS is an effective method of improving the corrosion resistance of solgel coating. In this work, coating properties, such as degree of crosslinking and compactness, are improved by different contents of APS, which is material difference with our previous work focusing on hindering the process of corrosion by cerium salt addition [35].…”

Section: Electrochemical Characteristics Of Coatings With Different Amentioning

confidence: 97%

Electrophoretic deposition of hybrid coatings on aluminum alloy by combining 3-aminopropyltrimethoxysilan to silicon–zirconium sol solutions for corrosion protection

Xue

Liu

et al. 2015

Thin Solid Films

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Section: Electrochemical Characteristics Of Coatings With Different Amentioning

confidence: 97%

Electrophoretic deposition of hybrid coatings on aluminum alloy by combining 3-aminopropyltrimethoxysilan to silicon–zirconium sol solutions for corrosion protection

Xue

Liu

et al. 2015

Thin Solid Films

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“…The use of organosilicon precursors also allows the simultaneous growth of the organic and inorganic networks, producing micro/nanostructured co-continuous domains with control of the morphological structure and preventing the occurrence of phase separation. Because of this, they have found widespread industrial applications such as adhesion promoters, anticorrosion coatings, derivatization of surfaces, the immobilization of active species to substrates or the creation of complex structures for biological applications and nanoobjects [15,20,32,35].…”

Section: Organoalkoxysilane Precursorsmentioning

confidence: 99%

Epoxy Sol-Gel Hybrid Thermosets

2016

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Sol-gel methodologies are advantageous in the preparation of hybrid materials in front of the conventional addition of nanoparticles, because of the fine dispersion of the inorganic phase that can be reached in epoxy matrices. In addition, the use of organoalkoxysilanes as coupling agents allows covalent linkage between organic and inorganic phases, which is the key point in the improvement of mechanical properties. The sol-gel process involves hydrolysis and condensation reactions under mild conditions, starting from hydrolysable metal alkoxides, generally alkoxy silanes. Using the sol-gel procedure, the viscosity of the formulation is maintained, which is an important issue in coating applications, whereas the transparency of the polymer matrix is also maintained. However, only the proper combination of the chemistries and functionalities of both organic and inorganic structures leads to thermosets with the desired characteristics. The adequate preparation of hybrid epoxy thermosets enables their improvement in characteristics such as mechanical properties (modulus, hardness, scratch resistance), thermal and flame resistance, corrosion and antimicrobial protection, and even optical performance among others.

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“…Organically modified silicates (ORMOSIL) are organic‐inorganic hybrid materials synthetized from the hydrolysis and condensation reactions of organically modified silanes precursors . The simplest class of ORMOSIL are those formed from precursors with a chemical formula as RSi (OCH 3 ) 3 where R is an organic terminal group which does not form bridges in the three‐dimensional gel network of the synthetized material .…”

Section: Introductionmentioning

confidence: 99%

Easy functionalization process applied to develop super‐hydrophobic and oleophobic properties on ASTM 1200 aluminum surface

Carneiro

Ferreira

Houmard

2018

Surface & Interface Analysis

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Funding information FAPEMIG; CNPqSuper-hydrophobic and oleophobic surfaces on ASTM 1200 H14 aluminum alloy substrates were achieved by chemical etching followed by deposition of organically modified silicate (ORMOSIL) coatings synthesized through sol-gel method. The chemical etching using FHH solutions (FeCl 3 + HCl + H 2 O 2 ) was adapted for the studied aluminum alloy by varying the concentration of iron (III) chloride and the etching time in order to increase the surface roughness of the material. This chemical etching produces rough surfaces exhibiting superficial square pores with edges about 1 to 2 μm. The chemical modifications with ORMOSIL solutions based on 1H,1H,2H,2Hperfluorooctyltriethoxysilane (PFOTES) and hexadecyltrimethoxysilane sol-gel precursors induced water contact angles about 154°and 150°, respectively, and sliding angles smaller than 5°, on the previously optimized etched surface. Moreover, the surface modification with ORMOSIL based on PFOTES reached also an oleophobic character with an oil contact angle about 136°due to air entrapment in the surface roughness at the oil-aluminum interface. Finally, ORMOSIL coatings produced with varied concentrations of PFOTES and tetraethoxyorthosilane precursors proved that the super-hydrophobic and oleophobic properties can be maintained with an important decrease of the PFOTES precursor, which should significantly decrease the cost production of such functional surfaces and could favour its mechanical durability.

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Preparation and characterization of anticorrosion Ormosil sol–gel coatings for aluminum alloy

Cited by 19 publications

References 43 publications

Electrophoretic deposition of hybrid coatings on aluminum alloy by combining 3-aminopropyltrimethoxysilan to silicon–zirconium sol solutions for corrosion protection

Electrophoretic deposition of hybrid coatings on aluminum alloy by combining 3-aminopropyltrimethoxysilan to silicon–zirconium sol solutions for corrosion protection

Epoxy Sol-Gel Hybrid Thermosets

Easy functionalization process applied to develop super‐hydrophobic and oleophobic properties on ASTM 1200 aluminum surface

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