Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Effects of Induction Heating Conditions on Ni-Al Based Intermetallic Compound Coating

Ni-Al계 금속간화합물 코팅에 미치는 고주파유도 가열 조건의 영향

  • 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)
  • 이한영 (계명대학교 신소재공학과) ;
  • 김태준 (계명대학교 대학원 재료공학과) ;
  • 조용재 (계명대학교 대학원 재료공학과)
  • Received : 2009.10.29
  • Published : 2010.02.20
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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

References

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