Ni-Al계 금속간화합물 코팅에 미치는 고주파유도 가열 조건의 영향

• Published in: 대한금속·재료학회지, 48(2) pp. 141 - 147
• Main Authors: 이한영, 김태준, 조용재
• Format: Journal Article
• Language: Korean
• Published: 대한금속·재료학회 01.02.2010
• Subjects: 재료공학
• ISSN: 1738-8228; 2288-8241

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. KCI Citation Count: 10