Thermal Stability of Dip-coated .GAMMA.-Al2O3 Layer on Stainless Steel Substrate

Masakuni Ozawa, Ken-ichi Araki
2004 Journal of the Japan Society of Powder and Powder Metallurgy  
Technology of porous alumina coating on stainless steel substrate was examined for the development of the environmental catalytic part, which was used under heat condition. Although oxidation resistance of stainless steel (SUS304) was not so high, the stable coat layer was made through a simple dipping-drawing procedure of ƒÁ-Al2O3 slurry. Thermal stability of the coat layer on stainless steel was examined by the change about surface area, XRD, and SEM morphology in the temperature range of
more » ... 1100•Ž. The surface area was 108m2/g and 96m2/g after heat treatment in 0.2%O2-99.8%N2 at 900•Ž and 1000•Ž, respectively. The coat layer was stable with porous structure on stainless steel below the temperature of 1000•Ž.
doi:10.2497/jjspm.51.206 fatcat:zfzo7hdomve3zgkojsvwqkghve