Please use this identifier to cite or link to this item: doi:10.22028/D291-24184
Title: Sol-gel coatings for chemical protection of stainless steel
Author(s): De Lima Neto, Pedro
Atik, Mohamed
Avaca, Luis A.
Aegerter, Michel A.
Language: English
Year of Publication: 1994
OPUS Source: Journal of sol-gel science and technology. - 2. 1994, S. 529-534
SWD key words: Sol-Gel-Verfahren
Elektrochemische Polarisation
DDC notations: 500 Science
Publikation type: Journal Article
Abstract: Sol-gel thin coatings of ZrO2, SiO2, 70SiO2-30TiO2 and 88SiO2-12Al2O3 compositions (mole %) have been prepared from sonocatalyzed sols and deposited by dip-coating technique on 316L stainless steel foils. The influence of the coatings on the chemical corrosion of the substrate has been measured through potentiodynamic polarization curves in aqueous 15% H2SO4 solution between 25 and 50°C. The values of the corrosion potential, polarization resistance and corrosion rate have been determined. Analysis of the data combined with scanning electron microscopy studies indicate that the films act as a geometric blocking against exposure to the corrosive media and increase the lifetime of the substrate up to a factor 8.5.
Link to this record: urn:nbn:de:bsz:291-scidok-23747
Date of registration: 7-Sep-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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