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Dip coating of alumina films by the sol-gel method

Published online by Cambridge University Press:  03 March 2011

Jung-Won Lee ,
Chang-Whan Won ,
Byong-Sun Chun  and
H.Y. Sohn
Jung-Won Lee
Affiliation:
Fuel Fabrication Department, HWR Division, Korea Atomic Energy Research Institute, P.O. Box 7, Daeduk-danji, Daejeon, Korea, 305-606
Chang-Whan Won
Affiliation:
ERC for Rapidly Solidified Advanced Materials and the Department of Metallurgical Engineering, Chungnam National University, Daejeon, Korea, 305-764
Byong-Sun Chun
Affiliation:
ERC for Rapidly Solidified Advanced Materials and the Department of Metallurgical Engineering, Chungnam National University, Daejeon, Korea, 305-764
H.Y. Sohn
Affiliation:
Department of Metallurgical Engineering, University of Utah, Salt Lake City, Utah 84112-1183
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Abstract

Thin alumina films were prepared on stainless steel and glass surfaces by dip coating from an aluminum alkoxide solution. Multiple coatings from a low-viscosity solution were necessary for high quality and sufficient thickness of the films. To determine the bonding mechanism and strength, wavelength dispersive x-ray was used. Aluminum was found to diffuse into the substrate in both cases. The possible bonding mechanism is a combination of diffusion and the formation of chemical compound between the alumina and the substrates. The surface properties of stainless steel, such as microhardness, electric resistance, and corrosion resistance, were substantially improved when coated with alumina.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 12 , December 1993 , pp. 3151 - 3157
Copyright
Copyright © Materials Research Society 1993

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References

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