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Preparation of SiO2 films from Si(OC2H5)4-C2H5OH-H2O solutions without catalysts

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Abstract

Thin and homogeneous SiO2 films were prepared on aluminium plates from Si(OC2H5)4-C2H5OH-H2O solutions which had controlled compositions and did not contain any acid as a catalyst. Aluminium with the coatings showed good corrosion resistance. However, SiO2 films prepared from alkoxide solutions with HCI contained Cl− ions. Aluminium with coatings including Cl− ions corroded in a corrosion test. Alkoxide solutions without acids were necessary for use in the coating of aluminium. The transformation of gels prepared from solutions without acids to amorphous SiO2 was investigated.

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  1. Toyama Industrial Technology Center, Futagami-machi 150, Takaoka-shi, 933, Toyama, Japan

    K. Kato

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  1. K. Kato
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Kato, K. Preparation of SiO2 films from Si(OC2H5)4-C2H5OH-H2O solutions without catalysts. J Mater Sci 27, 1445–1448 (1992). https://doi.org/10.1007/BF00542901

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  • DOI: https://doi.org/10.1007/BF00542901

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