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Effect of aluminium on electrochemical corrosion behaviour of Fe-0-5Cand Fe-1Calloys in 0.25M H2SO4

DSpace at IIT Bombay

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Title Effect of aluminium on electrochemical corrosion behaviour of Fe-0-5Cand Fe-1Calloys in 0.25M H2SO4
 
Creator RAO, VS
RAJA, VS
BALIGIDAD, RG
RAMAN, R
 
Subject term oxidation behavior
fe-al alloys
iron aluminides
sulfuric-acid
fe3al
carbon
xps
 
Description Electroslag remelted iron-aluminium alloys, with carbon contents of 0.5 and 1 wt-%, were used to investigate the effect of Al on the electrochemical corrosion behaviour in 0.25 M sulphuric acid solution. The alloy compositions were (wt-%): (I) Fe-16Al-0.5C, (2) Fe-10Al-0.5C, (3) Fe-8Al-0.5C, (4) Fe-16Al-1C, (5) Fe-10Al-1C, and (6) Fe-8Al-1C Lowering the Al content of the alloys resulted in a deterioration of the passivation behaviour during potentiodynamic polarisation testing. This deterioration vas attributed to the reduced Al content of the matrix phase on lowering the Al content of the alloy. Examination of the polarised surfaces via SEM revealed that in high Al content alloys carbides are preferentially attacked, while in low Al content allo, vs the attack is more general. Alloys with a carbon content of 1 wt-% displayed somewhat inferior passivation tendencies compared with those of alloys containing 0.5 wt-% carbon.
 
Publisher MANEY PUBLISHING
 
Date 2011-08-18T04:16:02Z
2011-12-26T12:55:34Z
2011-12-27T05:41:14Z
2011-08-18T04:16:02Z
2011-12-26T12:55:34Z
2011-12-27T05:41:14Z
2003
 
Type Article
 
Identifier CORROSION ENGINEERING SCIENCE AND TECHNOLOGY, 38(3), 235-238
1478-422X
http://dx.doi.org/10.1179/147842203770226988
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9888
http://hdl.handle.net/10054/9888
 
Language en