Advertisement

Journal of Sol-Gel Science and Technology

, Volume 8, Issue 1–3, pp 517–522 | Cite as

Ormocer (ZrO2-PMMA) films for stainless steel corrosion protection

  • Mohamed Atik
  • Fernando P. Luna
  • Sandra H. Messaddeq
  • Michel A. Aegerter
Article

Abstract

The chemical protection of 316 L stainless steel coated with ORMOCER coatings of polymethylmethacrylate (PMMA) and ZrO2 has been verified. The coatings were dip-coated on the substrates from sols prepared by mixing zirconium propoxide (ZrOC3H7)4, isopropanol (C3H7OH), glacial acetic acid (CH3COOH), polymethylmethacrylate and water under application of ultrasounds. The films were heat treated between 40 and 300°C in air up to 20 h. Their morphology was studied by electron scanning microscopy (SEM). Their anticorrosion behavior was analysed in 0.5M-H2SO4 solutions through potentiodynamic polarization curves at room temperature. The influence of the sol preparation, coating composition as well as of the duration and temperature of heat treatments on the corrosion parameters is reported. The films act as geometric blocking layers against the corrosive media and increase the lifetime of the substrate up to a factor 30.

Keywords

ormocer coatings chemical protection stainless steel PMMA-ZrO2 corrosion 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    M. Atik and M. Aegerter, J. Non-Cryst. Solids147&148, 483 (1992).Google Scholar
  2. 2.
    P. de Lima Neto, M. Atik, L.A. Avaca, and M.A. Aegerter, J. Sol-Gel Sci. Technol.1, 177 (1994).CrossRefGoogle Scholar
  3. 3.
    M. Atik and J. Zarzycki, J. of Mater. Sci. Letters13, 1301 (1994).CrossRefGoogle Scholar
  4. 4.
    P. de Lima Neto, M. Atik, L.A. Avaca, and M.A. Aegerter, J. Sol-Gel Sci. Technol.2, 529 (1994).CrossRefGoogle Scholar
  5. 5.
    M. Atik, P. de Lima Neto, L.A. Avaca, M.A. Aegerter, and J. Zarzycki, J. of Mater. Sci. Letters13, 1081 (1994).CrossRefGoogle Scholar
  6. 6.
    C. Sanchez and F. Ribot (eds.), inProceedings for the First European Workshop on Hybrid Organic-Inorganic Materials (Paris, 1993).Google Scholar
  7. 7.
    H. Schmidt, inChemistry, Spectroscopy and Applications of Sol-Gel Glasses (Springer-Verlag, Berlin, 1992), p. 117.Google Scholar
  8. 8.
    M. Atik, C. R’Kha, P.L. Neto, L.A. Avaca, M.A. Aegerter, and J. Zarzycki, J. Mat. Sc. Letters4(3), 178 (1994), and paper submitted to this conference.Google Scholar

Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • Mohamed Atik
    • 1
  • Fernando P. Luna
    • 1
  • Sandra H. Messaddeq
    • 1
  • Michel A. Aegerter
    • 1
  1. 1.Institute of Physics of São CarlosUniversity of São PauloSão CarlosBrazil

Personalised recommendations