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Fe/Al2O3 ceramic coating was made by spraying and sol-gel. The corrosion resistance between Fe/Al2O3 ceramic coating and steel 45# was studied. By microscope and X-ray diffraction, the binding and the composition of the interface were also analyzed. The results showed that Fe/Al2O3 ceramic coating had dense structure, less porosity and better binding with the substrate which was effective to prevent erosive liquor immersing into the inside of ceramic coating. Some substances that distributed homogeneously in Fe/Al2O3 ceramic coating, such as α-Al2O3, FeAlO3 and Fe3Al, could improve the corrosion resistance of this material.
Fe / Al2O3 ceramic coating was made by spraying and sol-gel. The corrosion resistance between Fe / Al2O3 ceramic coating and steel 45 # was studied. By microscope and X-ray diffraction, the binding and the composition of the interface were also analyzed. The results showed that Fe / Al2O3 ceramic coating had dense structure, less porosity and better binding with the substrate which was effective to prevent erosive liquor immersing into the inside of ceramic coating. Some substances that distributed homogeneously in Fe / Al2O3 ceramic coating, such as as α-Al2O3, FeAlO3 and Fe3Al, could improve the corrosion resistance of this material.