1994
DOI: 10.1002/maco.19940450904
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Der Einfluß von Kupfer auf das Korrosions und Passivierungsverhalten von Eisen‐Chrom‐Legierungen Teil I: Elektrochemisches Verhalten in schwefelsauren Elektrolyten

Abstract: Die Kinetik der Auflosung und der Passivierung von Legierun-gendesTypsFeCrXCuY (X = 5 ; 7 ; 9 ; 11%;Y = 0 ; 0 , 5 ; l%)wurde an rotierenden Scheibenclektroden (RDE) sowie an hydrodynamisch modulierten rotierenden Ring-Scheiben-Elektroden

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Cited by 20 publications
(16 citation statements)
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“…Lizlovs 14) found that copper reduces the passive film stability of stainless steels containing 1% Mo, but their the stability was improved by the addition of Cu when the steels contained 3% Mo. Postrach et al 15) claimed that the films of alloys containing Cu, according to the accelerated open circuit breakdown of Cu bearing samples, are less stable than expected, which is related to a faster removal of the oxide film. Oguzie et al 16) reported that Cu has negative effects on the stability of the passive film of austenitic, ferritic and martensitic stainless steels in the sulfuric acid solution due to the presence of Cu in the passive film as cupric ions increased the donor (N D ) and acceptor (N A ) densities affecting the film stability.…”
Section: Introductionmentioning
confidence: 99%
“…Lizlovs 14) found that copper reduces the passive film stability of stainless steels containing 1% Mo, but their the stability was improved by the addition of Cu when the steels contained 3% Mo. Postrach et al 15) claimed that the films of alloys containing Cu, according to the accelerated open circuit breakdown of Cu bearing samples, are less stable than expected, which is related to a faster removal of the oxide film. Oguzie et al 16) reported that Cu has negative effects on the stability of the passive film of austenitic, ferritic and martensitic stainless steels in the sulfuric acid solution due to the presence of Cu in the passive film as cupric ions increased the donor (N D ) and acceptor (N A ) densities affecting the film stability.…”
Section: Introductionmentioning
confidence: 99%
“…The addition of copper to the slurry and base alloy increased the number and area of numerous (Mn, Cr, Al, Fe) oxides and oxy-sulfides, due to an increase in the activity of chromium, and resulted in decreased pitting resistance [19]. It is well known that the addition of copper (Cu) to ferritic, austenitic or duplex steels improves the resistance to uniform corrosion in sulfuric acid [20][21][22][23][24]. It was reported in previous studies that the mechanism of the beneficial effect of Cu addition on the steels is based on the suppression of anodic dissolution by the noble metallic copper (Cu) enriched on the surface film of austenitic stainless steels in sulfuric acid [25,26].…”
Section: Electrochemical Analysis Resultsmentioning
confidence: 99%
“…Uber die Ergebnisse der elektrochemischen Untersuchungen wurde bereits berichtet [2]. Zum besseren Verstandnis des Passivierungs-und Korrosionsverhaltens der Legierungen und der Wirkung des Kupfers sind jedoch Kenntnisse uber den Aufbau der Passivschicht wunschenswert.…”
Section: Einfiihrungunclassified
“…Es wurden deshalb oberflachenanalytische Untersuchungen rnit der Rontgenphotoelektronenspektroskopie (XPS) durchgefuhrt, uber die nachfolgend berichtet wird. Zuvor werden die wesentlichen Ergebnisse aus Teil I [2] in bezug auf die Wirkung des Kupfers kurz referiert.…”
Section: Einfiihrungunclassified
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