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http://dx.doi.org/10.3365.KJMM.2010.48.02.141

Effects of Induction Heating Conditions on Ni-Al Based Intermetallic Compound Coating  

Lee, Han-Young (Dept. of Advanced Materials Engineering, Keimyung University)
Kim, Tae-Jun (Dept. of Materials Engineering, Graduated School, Keimyung University)
Cho, Yong-Jae (Dept. of Materials Engineering, Graduated School, Keimyung University)
Publication Information
Korean Journal of Metals and Materials / v.48, no.2, 2010 , pp. 141-147 More about this Journal
Abstract
An Ni-Al intermetallic coating has been produced by induction heating on mild steel. The effect of the induction heating conditions on the microstructure of the coating has been investigated. The reaction synthesis of the intermetallic compounds was promoted while increasing the heating rate and the holding time at reaction temperature. Especially, an NiAl phase corresponding to the initial composition of mixed powder was predominantly formed. However, the synthesis at low reaction temperatures occurred by solid state diffusion during the holding time and an Fe-Al reaction layer was formed at the interface with the substrate, regardless of the heating rate. The combustion synthesis of the intermetallic compound occurred at a temperature higher than 1023 K and resulted in an almost single phase NiAl structure.
Keywords
intermetallics; coating; microstructure; scanning electron microscopy/X-ray diffraction; induction heating;
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Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 1
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