Skip to Main content Skip to Navigation
Journal articles

Corrosion protection of 304L stainless steel by chemical vapour deposited alumina coatings.

Abstract : The corrosion protection of 304L stainless steel by aluminium oxide coatings deposited by metal–organic chemical vapor deposition (MOCVD) was investigated in a 0.1 M NaCl solution at room temperature by polarization curves and electrochemical impedance spectroscopy. The effect of the coating thickness was specifically considered. Transmission electron microscopy cross-section observations of the stainless steel/alumina coating showed that the coating is amorphous and porosity-free. The impedance response, for short immersion times, confirmed the absence of porosity and revealed that the alumina coatings with thickness ranging from 250 nm to 1700 nm provide high corrosion resistance. The corrosion protection increased when the alumina coating thickness increased. However, from the impedance data obtained for different exposure times to the aggressive solution, a threshold film thickness of 500–600 nm was determined, above which the corrosion protection was not improved. Due to their interesting physicochemical properties, such films of amorphous alumina are an innovative and economically accessible alternative to improve the stainless steel corrosion resistance and could be used in miniaturized sensors operating in marine environment.
Document type :
Journal articles
Complete list of metadata

Cited literature [32 references]  Display  Hide  Download
Contributor : Open Archive Toulouse Archive Ouverte (OATAO) Connect in order to contact the contributor
Submitted on : Friday, February 13, 2015 - 3:54:05 PM
Last modification on : Wednesday, June 1, 2022 - 5:08:17 AM
Long-term archiving on: : Thursday, May 14, 2015 - 10:55:34 AM


Files produced by the author(s)




Ana-Maria Lazar, Wolfgang Prieto yespica, Sabrina Marcelin, Nadine Pébère, Diane Samélor, et al.. Corrosion protection of 304L stainless steel by chemical vapour deposited alumina coatings.. Composites, Elsevier, 2014, vol. 81, pp. 125-131. ⟨10.1016/j.corsci.2013.12.012⟩. ⟨hal-01116547⟩



Record views


Files downloads