Hydrolysis of trifunctional alkoxysilanes and corrosion resistance of steel sheets coated with alkoxysilane-derived films

Izumi, Keiji; Tanaka, Hisatoshi; Uchida, Yukio; Tohge, Noboru; Minami, Tsutomu

doi:10.1007/bf00626699

Cited by 22 publications

(7 citation statements)

References 21 publications

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“…The deposition of sol‐gel coatings to improve the corrosion resistance of metals represents numerous advantages including the simplicity of the deposition methods, the chemical bonding of coating to substrate resulting in high adherence and chemical stability, and the low sintering temperature 8, 9. These characteristics are related to the good corrosion resistance of coated specimens 10–15…”

Section: Introductionmentioning

confidence: 99%

Sol‐gel‐derived alumina/polyvinylpyrrolidone hybrid nanocomposite film on metal for corrosion resistance

Chen

Hou

2007

J of Applied Polymer Sci

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With the addition of polyvinylpyrrolidone (PVP), alumina sol with an aluminum sec-butoxide/water molar ratio of 1 : 45 was synthesized. The surface tension of this alumina sol was found to be lower by 35% than the sol without PVP. Alumina/PVP hybrid film with a critical thickness up to 2 mm was fabricated by dip-coating method. The heat treatment between 200 and 3008C could produce a film with perfect hybrid nanocomposite structures. Alumina particles with a size of about 20 nm were uniformly distributed in this material. The hardness of the film samples increased with the increment of heat treatment temperature, and hardness values higher than the original metal were detected after heat treated above 4008C. The film-coated metals that were heat treated below 1508C or above 4008C exhibited relatively weak adhesion, but strong adhesion was obtained when heat treated between 200 and 3008C for 30 min. The corrosion rate of the film-coated metal that was heat treated between 2008C and 3008C for 30 min was lower by 95% than the uncoated metal.

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Section: Introductionmentioning

confidence: 99%

Sol‐gel‐derived alumina/polyvinylpyrrolidone hybrid nanocomposite film on metal for corrosion resistance

Chen

Hou

2007

J of Applied Polymer Sci

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“…Izumi (Izumi 1993) studied the resistance to corrosion of aluminised steel coated with hybrid layers of silica (70 nm), obtained through the hydrolysis of different alkylalcoxides (R´(Si(OR) 3 ), heat-treated at 400ºC for 1 min. The resistance to corrosion of the coated aluminised steel was evaluated by a humidity cabinet test against the evolution of the change loss.…”

Section: Hybrid Coatings On Metal Substratesmentioning

confidence: 99%

Sol–Gel Protective Coatings for Metals

Durán

Castro

Conde

et al. 2016

Handbook of Sol-Gel Science and Technology

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“…Thin polysiloxane layers on metal substrates are of both high scientific and technological interest − due to the unique properties of this class of polymers. − The strength of the inorganic Si−O−Si backbone on one hand and the flexibility of the organic tail on the other gives the user a valuable tool to meet different requirements of the industry with only one kind of polymer (accordingly, they are often called organic/inorganic hybrids). Furthermore, by introducing additional functionalized organic groups, they can also be used as an adhesion promoter providing a link between metallic surfaces and other organic coatings (resins or polymers), or its appearance can be changed from transparent to an ad libitum colored coating.…”

Section: Introductionmentioning

confidence: 99%

“…Thin polysiloxane layers on metal substrates are of both high scientific and technological interest [1][2][3][4][5] due to the unique properties of this class of polymers. [6][7][8] The strength of the inorganic Si-O-Si backbone on one hand and the flexibility of the organic tail on the other gives the user a valuable tool to meet different requirements of the industry with only one kind of polymer (accordingly, they are often called organic/inorganic hybrids).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Organosilanes at a Zn-Terminated ZnO (0001) Surface: Molecular Dynamics Study

and

Nauer²,

Sokol³

et al. 2006

Langmuir

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Four different organosilanes (octyltrihydroxysilane, butyltrihydroxysilane, aminopropyltrihydroxysilane, and thiolpropyltrihydroxysilane) adsorbed at a reconstructed Zn-terminated polar ZnO (0001) surface are studied via constant temperature (298 K) molecular dynamics simulations. Both single adsorbed silane molecules as well as adsorbed silane layers are modeled, and the energy, distance, orientation, and alignment of these adsorbates are analyzed. The adsorbed silane molecules exhibit behavior depending on the chemical nature of their tail (nonpolar or polar) as well as on the silane concentration at the solid surface (single adsorption or silane layer). In contrast to the O-terminated ZnO surface studied previously, now adsorption can only occur at the vacancies of this reconstructed crystal surface, thus leading to an arched structure of the liquid phase near the crystal surface. Nevertheless, both nonpolar and polar single adsorbed silanes show a similar orientation and alignment at the surface (orthogonal in the former, parallel in the latter case) as for the O-terminated ZnO surface, although the interaction energy with the surface is considerably increased for nonpolar silanes while it is nearly unaffected for the polar ones. For adsorbed silanes within silane layers, the difference to single adsorbed silanes depends on the polarity of the tail: nonpolar silanes again show an orthogonal alignment, while polar silanes exhibit two different orientations at the solid surface-a head and a tail down configuration. This leads to two completely different but nevertheless stable orientations of these silanes at the Zn-terminated ZnO surface.

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Hydrolysis of trifunctional alkoxysilanes and corrosion resistance of steel sheets coated with alkoxysilane-derived films

Cited by 22 publications

References 21 publications

Sol‐gel‐derived alumina/polyvinylpyrrolidone hybrid nanocomposite film on metal for corrosion resistance

Sol‐gel‐derived alumina/polyvinylpyrrolidone hybrid nanocomposite film on metal for corrosion resistance

Sol–Gel Protective Coatings for Metals

Adsorption of Organosilanes at a Zn-Terminated ZnO (0001) Surface: Molecular Dynamics Study

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