科研之友
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摘要
We report here on the synthesis of homogenous, well-adherent composite film of Fe2O3/SiO2, up to 7 mu m thick, on the titanium substrate by anodic treatment optimized for an aqueous suspension of K2O center dot SiO2 and Fe2O3 powder under galvanostatic conditions. The end products were characterized by scanning electron microscopy, energy-dispersive X-ray, X-ray powder diffractometry, X-ray photoelectron spectroscopy, and Mossbauer spectroscopy, concluding that the formation of composite coating at the SiO2 to Fe2O3 ratio of approximately 1:1 proceeds just after formation of a thin TiO2 layer with Fe2O3 particle inclusions without transformations via an electrophoresis deposition of negatively charged Fe2O3 species enveloped by silica ions.
- 出版日期2010-2
