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Recent trends in coatings for high temperature applications

DSpace at IIT Bombay

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Field Value
 
Title Recent trends in coatings for high temperature applications
 
Creator KHANNA, AS
PATTANAIK, AK
 
Subject mild-steel
corrosion behavior
stainless-steel
oxidation
chromium
nickel
 
Description Many components operating at high temperatures need additional protection to resist the aggressive environment This is usually provided by coatings which impart excellent corrosion resistance by forming a protective alumina, chromia or silica scales. The requirement of coating varies from one application to the other, depending upon the environment, whether it is oxidising, sulphidizing or in the presence of salt deposits. The coatings at high temperatures. must have low reaction rates with the environment, and also remain adherent and form protective oxides at the temperature of operation. Most of these coatings are divided into three main categories, conventional coatings, modified coatings and advanced coatings. Conventional coatings such as aluminide, silicides very commonly fail in aggressive environments. Advanced coatings are by vacuum plasma method, HVOF, laser surface alloying, plasma powder welding and ion beam assisted coatings. Laser surface alloying is being considered as the most versatile technique which can be used to make high performance surface alloys. This helps in saving huge cost of costly materials, which are un-necessarily used in bulk alloying as well as the processing does not interfere with the bulk properties.
 
Publisher METAL FINISHERS ASSOC INDIA
 
Date 2011-08-18T18:06:22Z
2011-12-26T12:55:51Z
2011-12-27T05:43:01Z
2011-08-18T18:06:22Z
2011-12-26T12:55:51Z
2011-12-27T05:43:01Z
1997
 
Type Article
 
Identifier TRANSACTIONS OF THE METAL FINISHERS ASSOCIATION OF INDIA, 6(3), 187-205
0971-5304
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10095
http://hdl.handle.net/10054/10095
 
Language en