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Titolo:
Influence of microstructure on the microbial corrosion behaviour of stainless steels
Autore:
Moreno, DA; Ibars, JR; Ranninger, C;
Indirizzi:
Univ Politecn Madrid, ESTI Ind, Dept Ingn & Ciencia Mat, E-28006 Madrid, Spain Univ Politecn Madrid Madrid Spain E-28006 cia Mat, E-28006 Madrid, Spain
Titolo Testata:
REVISTA DE METALURGIA
fascicolo: 4, volume: 36, anno: 2000,
pagine: 266 - 278
SICI:
0034-8570(200007/08)36:4<266:IOMOTM>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
SPA
Soggetto:
SULFATE-REDUCING BACTERIA; ELECTROCHEMICAL-BEHAVIOR; BIOGENIC SULFIDE;
Keywords:
microbiologically influenced corrosion (MIC) stainless steel; sulphate-reducing bacteria (SRB); biocorrosion test; electrochemical test;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Moreno, DA Univ Politecn Madrid, ESTI Ind, Dept Ingn & Ciencia Mat, Jose Gutierrez Abascal 2, E-28006 Madrid, Spain Univ Politecn Madrid Jose Gutierrez Abascal 2 Madrid Spain E-28006
Citazione:
D.A. Moreno et al., "Influence of microstructure on the microbial corrosion behaviour of stainless steels", REV METAL M, 36(4), 2000, pp. 266-278

Abstract

Several stainless steels (Types UNS S30300, S30400, S30403. S31600, S31603and S42000) with different microstructural characteristics have been used to study the influence of heat treatments on microbiologically influenced corrosion (MIC). Biocorrosion and accelerated electrochemical testing was performed in various microbiological media. Two species of sulphate-reducing bacteria (SRB) have been used in order to ascertain the influence of microstructure. The morphology of corrosion pits produced in both chloride and chloride Fills sulphide - SRB metabolites - was inspected by optical and scanning electron microscopy (SEM) complemented with energy-dispersive X-ray (EDX) analysis. Results have shown different behaviours regarding corrosion resistance in each case studied. Sensitized austenitic stainless steels weremore affected by the presence of aggressive anions and pitting potential (Ep) values were mure cathodic than those of as-received state. A corrosion enhancement is produced by the synergistic action of biogenic sulphides andchloride anions. Fitting corrosion in martensitic stainless steel Type UNSS42000 was found in a biocorrosion test. The pitting morphology is correlated to the chemical composition, the microstructure and the electrolyte.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 13:33:41