Two-Layer Nano-Oxide Composite Films on Fe-18Cr Alloys |
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| Authors: | Mingming Yao Wei He Fang Li |
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| Institution: | 1. School of Chemistry and Chemical Engineering , University of Jinan , Jinan, China chm_yaomm@ujn.edu.cn, yaomm4364@sina.com;3. School of Chemistry and Chemical Engineering , University of Jinan , Jinan, China;4. State Key Laboratory of Crystal Materials , Shandong University , Jinan, China;5. School of Chemistry and Chemical Engineering , University of Jinan , Jinan, China |
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| Abstract: | A two-layer film composed of a reactive element (RE) oxide (ZrO2, Y2O3, CeO2, or La2O3) and aluminum oxide (Al2O3) was prepared on the surface of Fe-18Cr alloys by an electrochemical process combined with sintering. High-resolution field emission scanning electron microscopy (FE-SEM) was used to characterize the two-layer film, which showed nanostructure. SEM, EDS and mass gain measurement were used to study the oxidation resistance of the film on Fe-18Cr alloy. It is proved that this kind of film is effective in protecting the substrate from oxidation. The results also indicated that the two-layer film possesses superior oxidation resistance than a single Al2O3 film. The mechanisms accounting for such effects have been discussed. |
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| Keywords: | Alloys electrochemical deposition nano-oxide films oxidation two-layer |
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