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Oxidation and corrosion behaviour of CoNiCrAlY bond coats

DSpace at IIT Bombay

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Field Value
 
Title Oxidation and corrosion behaviour of CoNiCrAlY bond coats
 
Creator RATHOD, WS
KHANNA, AS
KARTHIKEYAN, J
RATHOD, RC
 
Subject Cold gas dynamic spray
High velocity oxygen fuel
Bond coat
THERMAL BARRIER COATINGS
COLD SPRAY
HVOF
SUSCEPTIBILITY
POWDER
STAGE
 
Description CoNiCrAlY coating for protection against oxidation at elevated temperature was prepared on the surface of the 316L by high velocity oxygen fuel (HVOF) and cold gas dynamic spray (CGDS) techniques. The phase composition, microstructure and oxidation resistance of the coating were investigated at 900 degrees C in air. According to the results, the CGDS coating shows low oxide growth rate as a result of low porosity, oxide content and high hardness. CGDS coating provided excellent oxidation protective ability at 900 degrees C in air, whereas HVOF coating showed high levels of visible defects, oxide content, spinel type oxide and high oxide growth rate. Electrochemical study shows that the HVOF process provided better corrosion resistance as compared to CGDS process.
 
Publisher MANEY PUBLISHING
 
Date 2014-12-28T14:58:24Z
2014-12-28T14:58:24Z
2014
 
Type Article
 
Identifier SURFACE ENGINEERING, 30(6)
0267-0844
1743-2944
http://dx.doi.org/10.1179/1743294414Y.0000000255
http://dspace.library.iitb.ac.in/jspui/handle/100/16813
 
Language English