Multilayer SiO2 and TiO2 coatings on glasses by the sol-gel process |
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Authors: | N.D.S. Mohallem M.A. Aegerter |
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Affiliation: | Instituto de Física e Química de São Carlos, University of São Paulo, C.P. 369, 13560, São Carlos, SP, Brasil |
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Abstract: | Glass films of pure SiO2 and TiO2 have been prepared on sodalime silica flat slide glasses by the sol-gel process using the dip-coating technique from TEOS and Ti(OC3H7)4 solutions. The various parameters such as chemicals concentrations, viscosity, type of catalyst, withdrawal speed and temperature of densification leading to the obtention of good and adherent coatings with definite film thicknesses are reported. The same technique has been used for the depositon of layers of colored films SiO2---MxOy (M = Co, Mn, Nd and Cr). Brilliant yellow coatings have been obtained with TiO2---CeO2. |
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