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이경구,안종천 한국열처리공학회 1999 熱處理工學會誌 Vol.12 No.1
Microstructure of Al-Si coated PWA 1426 alloy was studied. Diffusion coated specimens were heat treated for 4hr at 870∼1087℃ and then were examined the changes of microstructure and interfacial compound by optical microscopy, SEM and EDS. According to the result of EDS, it is supposed that the coated layer was composed of Ni₂Al₃. When diffusion treatment was conducted at 1087℃, coated layer varied from Ni₂Al₃to NiAl phase and composed of mixed, denuded and inter-diffusion layer.