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Interface electrochemical corrosion behaviour of alclad Al-Zn-Mg-Cu-Cr Al alloy adhesively bonded with carbon fibre reinforced plastic stiffener

DSpace at IIT Bombay

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Title Interface electrochemical corrosion behaviour of alclad Al-Zn-Mg-Cu-Cr Al alloy adhesively bonded with carbon fibre reinforced plastic stiffener
 
Creator KALE, SS
RAJA, VS
BAKARE, AK
 
Subject Al alloy
Aging aircraft
Composite patch
Crevice corrosion
Inhibitor
RARE-EARTH CHLORIDES
7075 ALUMINUM-ALLOY
LOCALIZED CORROSION
CONVERSION COATINGS
COMPOSITE REPAIR
CERIUM
INHIBITION
AEROSPACE
CRACKING
MICROSTRUCTURES
 
Description Stiffening of Al alloy aircraft structures with carbon fibre reinforced plastic laminate called 'patches' is considered as a viable option to enhance fatigue life. Interface so created between the reinforcement and Al alloy structure is potential site for crevice corrosion attack. Therefore, studies were conducted to investigate the interface corrosion behaviour of peak and two-step aged Al-Zn-Mg-Cu-Cr alclad alloy with and without the patch and examine the possibility to control the interfacial attack with the addition of cerium chloride inhibitor exposed to 3? 5 wt-% NaCl solution for the durations of 2 and 168 h. Electrochemical impedance spectroscopy revealed that the interface attack was significantly reduced by the addition of 1000 ppm cerium chloride. The response of the peak and two-step aged alloy for such an addition was further investigated and found that the alloy under step aged condition behaves better than that of the peak aged condition.
 
Publisher MANEY PUBLISHING
 
Date 2014-12-28T14:57:23Z
2014-12-28T14:57:23Z
2014
 
Type Article
 
Identifier CORROSION ENGINEERING SCIENCE AND TECHNOLOGY, 49(2)116-123
1478-422X
1743-2782
http://dx.doi.org/10.1179/1743278213Y.0000000118
http://dspace.library.iitb.ac.in/jspui/handle/100/16811
 
Language English