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Anodic polarization and surface composition of Fe-16Al-0.14C alloy in 0.25 M sulfuric acid

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Title Anodic polarization and surface composition of Fe-16Al-0.14C alloy in 0.25 M sulfuric acid
 
Creator RAO, VS
RAJA, V
 
Subject ray photoelectron-spectroscopy
feal intermetallic compound
stainless-steels
iron aluminides
electron-spectroscopy
oxidation behavior
corrosion behavior
chemical-analysis
passive films
xps
anodic polarization
electroslag refining process.
hydrogen embrittlement
iron aluminides
oxidation
passivation
x-ray photoelectron spectroscopy
 
Description Anodic polarization behavior of electroslag-refined cast iron aluminide having the composition of Fe-16Al-0.14C was studied in 0.25 M sulfuric acid (H2SO4). The anodic polarization curve displayed a secondary anodic peak in the pre-passivation region, which has not been reported in the literature. before reaching the broad passive region. The films formed at the passive potential of 1 V vs saturated calomel electrode (SCE) and at the pre-passivation potential of -0.35 V-SCE were examined by x-ray photoelectron spectroscopy (XPS). At these potentials, both Al and Fe were found to be present in the films formed by the alloy with a marginal variation in Al/Fe ratio. In addition, Cu was found to exist on the aluminide surface at -0.35 V-SCE.
 
Publisher NATL ASSN CORROSION ENG
 
Date 2011-08-19T01:14:55Z
2011-12-26T12:55:58Z
2011-12-27T05:43:49Z
2011-08-19T01:14:55Z
2011-12-26T12:55:58Z
2011-12-27T05:43:49Z
2003
 
Type Article
 
Identifier CORROSION, 59(7), 575-583
0010-9312
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10177
http://hdl.handle.net/10054/10177
 
Language en