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Repassivation behaviour and surface analysis of Fe3Al based iron aluminide in 0.25 M H2SO4

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Title Repassivation behaviour and surface analysis of Fe3Al based iron aluminide in 0.25 M H2SO4
 
Creator RAO, VS
 
Subject 304l stainless-steel
passive films
sulfuric-acid
corrosion behavior
alloys
kinetics
xps
susceptibility
spectroscopy
oxidation
intermetallics
polarization
xps
passive films
repassivation
 
Description The repassivation kinetics of iron aluminide having a composition of Fe-16Al-0.14C (wt.%) were investigated in 0.25 M H2SO4 along with pure Al and Fe using a rapid scratched electrode technique. The repassivation behaviour of iron aluminide demonstrated was faster compared with Al, whereas the repassivation behaviour of Fe was slower than Al despite having a lower passive current density than Al. The repassivation behaviour was analyzed in terms of current density [i/t] as a function of charge density [q/t] that flowed from the scratched surface based on high-field ion conduction model and surface chemistry of the passive film. A mechanistic model is presented to explain the passivation/repassivation behaviour of iron aluminide based on the new findings. (C) 2004
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-26T07:33:24Z
2011-12-26T12:57:21Z
2011-12-27T05:47:28Z
2011-08-26T07:33:24Z
2011-12-26T12:57:21Z
2011-12-27T05:47:28Z
2005
 
Type Article
 
Identifier CORROSION SCIENCE, 47(1), 183-194
0010-938X
http://dx.doi.org/10.1016/j.corsci.2004.05.014
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11240
http://hdl.handle.net/10054/11240
 
Language en