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High temperature oxidation behaviour of laser alloyed ferritic steels

DSpace at IIT Bombay

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Title High temperature oxidation behaviour of laser alloyed ferritic steels
 
Creator PATTANAIK, AK
KHANNA, AS
GASSER, A
HARENDRANATH, CS
 
Subject mild-steel
corrosion behavior
chromium
laser surface alloying
ferritic steel
microstructure
oxidation
plasma cr-coating
 
Description The high temperature oxidation behaviour of low alloy ferritic steels, viz., 2.25Cr-1Mo steel and 9Cr-1Mo steel, coated with Cr, followed by laser irradiation have been investigated. Chromium powder was deposited by two different techniques i.e. plasma spraying, and direct powder feeding method. For the laser treatment, a 3 kW continuous wave (CW) CO2 laser with line focus mode was used. Detailed characterization of the coated and laser alloyed samples was carried out using optical microscope, and SEM/EDAX. The oxidation tests were carried out at 700 degrees C and 800 degrees C in air. Laser alloyed 2.25Cr-1Mo and 9Cr-1Mo steels showed improved oxidation resistance compared to as-coated and un-coated specimens.
 
Publisher TRANSTEC PUBLICATIONS LTD
 
Date 2011-10-24T06:00:15Z
2011-12-15T09:11:31Z
2011-10-24T06:00:15Z
2011-12-15T09:11:31Z
1997
 
Type Article; Proceedings Paper
 
Identifier HIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 4, PTS 1 AND 2,251-2,283-290
0-87849-774-9
0255-5476
http://dspace.library.iitb.ac.in/xmlui/handle/10054/15344
http://hdl.handle.net/100/2112
 
Source 4th International Symposium on High Temperature Corrosion and Protection of Materials,LES EMBIEZ, FRANCE,MAY 20-24, 1996
 
Language English