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Biocorrosion of AISI 304 stainless steel by desulfovibrio desulfuricans in seawater / Thi My Phuc Nguyen in Industrial & engineering chemistry research, Vol. 47 n°14 (Juillet 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°14 (Juillet 2008) . - p. 4703-4711 Titre : Biocorrosion of AISI 304 stainless steel by desulfovibrio desulfuricans in seawater Type de document : texte imprimé Auteurs : Thi My Phuc Nguyen, Auteur ; Xiaoxia Sheng, Auteur ; Yen-Peng Ting, Auteur ; Simo Olavi Pehkonen, Auteur Année de publication : 2008 Article en page(s) : p. 4703-4711 Note générale : Bibliogr. p. 4710-4711 Langues : Anglais (eng) Mots-clés : AISI  304  stainless  steel;  Analytical  techniques;  Polarization  resistance Résumé : The corrosion behavior of AISI 304 stainless steel (SS304) in a batch system of enriched artificial seawater (EASW) in the presence of a sulfate-reducing bacteria (SRB) species (Desulfovibrio desulfuricans ATCC 27774) was investigated using analytical techniques including electrochemical impedance spectroscopy (EIS), atomic force microscopy (AFM), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). EIS analysis showed that the polarization resistance of SS304 decreased after immersion in EASW in the presence of the SRB for 14 days compared to the control sample (in the absence of SRB). The corrosion processes were simulated using equivalent circuit models, which provided electrochemical information on the liquid/surface interface for both abiotic and biotic systems. Using AFM, pits and cracks were observed on the stainless steel surface in the presence of SRB, and a thick biofilm produced by SRB was evident in SEM micrographs, which corroborated the EIS results for the explanation of the biocorrosion mechanism. XPS analysis showed changes in the chemical states at the near-surface environment and on the surface of stainless steel. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071468e [article] Biocorrosion of AISI 304 stainless steel by desulfovibrio desulfuricans in seawater [texte imprimé] / Thi My Phuc Nguyen, Auteur ; Xiaoxia Sheng, Auteur ; Yen-Peng Ting, Auteur ; Simo Olavi Pehkonen, Auteur . - 2008 . - p. 4703-4711. Bibliogr. p. 4710-4711 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°14 (Juillet 2008) . - p. 4703-4711 Mots-clés : AISI  304  stainless  steel;  Analytical  techniques;  Polarization  resistance Résumé : The corrosion behavior of AISI 304 stainless steel (SS304) in a batch system of enriched artificial seawater (EASW) in the presence of a sulfate-reducing bacteria (SRB) species (Desulfovibrio desulfuricans ATCC 27774) was investigated using analytical techniques including electrochemical impedance spectroscopy (EIS), atomic force microscopy (AFM), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). EIS analysis showed that the polarization resistance of SS304 decreased after immersion in EASW in the presence of the SRB for 14 days compared to the control sample (in the absence of SRB). The corrosion processes were simulated using equivalent circuit models, which provided electrochemical information on the liquid/surface interface for both abiotic and biotic systems. Using AFM, pits and cracks were observed on the stainless steel surface in the presence of SRB, and a thick biofilm produced by SRB was evident in SEM micrographs, which corroborated the EIS results for the explanation of the biocorrosion mechanism. XPS analysis showed changes in the chemical states at the near-surface environment and on the surface of stainless steel. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071468e