slag2000

Details

 

Name:
SUZUKI, Ryosuke
Company/Department:
Dept. Energy Sci. & Tech. Kyoto Univ.
Street adress:
Yoshida-Honmachi, Sakyo-ku
P O Box:
Zip Code:
606-8501
City:
Kyoto
Country:
Japan
Email:
rsuzuki@eng.hokudai.ac.jp
Title:
ELECTROLESS COATING OF Fe3Si ON STEELS IN THE MOLTEN SALT
co authors:
T. Nishibata, Y. Nagaso, K. Nakanishi, M. Ishikawa, K. Teranuma and K. Ono Kyoto Univ., Kyoto, Japan
Abstract:
The corrosion-resistive intermetallic compound Fe3Si was non-electrolytically coated pure iron and mild steels. The homogenous Fe3Si layer successfully deposited by the disproportional reaction between Si and Si4+ ions, using solid silicon and the molten salt composed of NaCl-KCl-NaF-Na2SiF6-SiO2. The layer of Fe3Si single phase with 24+-1 mol%Si grew thicker than 200mm by immersing for a few hours at 973-1173K. The Si penetration from the Fe3Si layer into the a-Fe substrate was small due to the slow diffusion of Si in a-Fe. The fast Fe diffusion in the Fe3Si layer left the Kirkendall holes. The mechanisms of layer growth and defects formation were studied experimentally.
Session nr:
22
PDFfile:
Click to open this paper filed in Proc.! (285kB)