"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

SiO2 thin films obtained from silica sols by thermal spraying

V. NIKOLIC1, V. JOKANOVIĆ2,* , N. RADIĆ1, B. GRBIĆ1, B. JOKANOVIĆ3, D. IZVONAR4

Affiliation

  1. Institute of Chemistry, Technology and Metallurgy, Department of Catalysis, Njegoševa 12, 11000 Belgrade, Serbia
  2. Institute of Nuclear Sciences “Vinča”, P.O. Box 522, 11001 Belgrade, Serbia
  3. Sol Carbon GmBH, Meintigen, Germany
  4. Faculty of ContemporaryArts, Kralja Petra 4, Belgrade, Serbia

Abstract

The mechanism of the synthesis of silicon dioxide thin films on the surface of a stainless steel band substrate, by thermal spraying of a silica sol as a precursor was the subject of this work. The structural design of the hydro thermally obtained particles was defined as an organized structure of basic motives-silica tetrahedrons, over silica chains and finally sol particles, which were used as a well-defined precursor for the preparation of corresponding thin films. IR spectroscopy and TGA analysis were employed to define the structure of the silica tetrahedrons and the size of the silica chains in the sol particles. The thickness of the film and the dependence of the film morphology and structure on its surface and of its cross section were investigated. The mechanism of film formation and the differences on its appearance depending of the SiO2 sol concentration was also investigated. The sizes of the particles were 50 – 250 nm, while the agglomerate sizes were mostly 250 nm in diameter and 1 – 2 μm in the length. The thicknesses of the films were 6.5 – 33 μm..

Keywords

Thermal spray pyrolysis, Hydrothermal synthesis, Silica sol, Stainless steel tape, Nanostructured design.

Submitted at: Feb. 9, 2009
Accepted at: March 24, 2009

Citation

V. NIKOLIC, V. JOKANOVIĆ, N. RADIĆ, B. GRBIĆ, B. JOKANOVIĆ, D. IZVONAR, SiO2 thin films obtained from silica sols by thermal spraying, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 3, pp. 243-250 (2009)