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김찬욱(C. W. Kim),조기현(K.H. Cho),석한길(H. G. Suk) 한국표면공학회 2007 한국표면공학회지 Vol.40 No.5
The objective of this study is to evaluate the diffusion behavior of Al and Si from a coatings in the microstucture of Fe-Si steel. Steel samples deposited with Al-Si alloy are prepared by ion plating process, followed by annealing treatments for diffusion at 1050℃. Several intermetallic phases are found in the coatings and they are identified as Fe-Al and an orderd Fe-Si compounds. Series of different concentration profiles through the sample have been obtained and Si content reaches about 5 wt% in case of 90 minutes of diffusion time.
김찬욱(C. W. Kim),김병문(B. M. Kim),석한길(H. G. Suk) 한국표면공학회 2006 한국표면공학회지 Vol.39 No.5
In order to enhance the electromagnetic shielding efficiency of commercialized cold-rolled steel sheets, we have prepared Ni deposited steel sheets by the electrodeposition method. Surface alloying with Ni and Fe was achieved on a steel sheet by diffusion annealing process. Shielding effectiveness measurement results showed that annealed Ni electrodeposited steel sheets enhanced the shielding efficiency up to about 3 dB in the frequency range of 20 to 200Hz, compared with that of non-deposited steel sheets.