在Ni基体上制备了Y2O3涂层,并对其如何影响Ni在900℃的氧化性能进行了研究.作为对比,采用相同的工艺在Ni基体上制备了CeO2涂层.900℃下恒温氧化表明:Y2O3或CeO2对Ni的氧化机理没有影响;但与CeO2相比,Y2O3在降低Ni的氧化速度上有更强的作用.此外Y2O3和CeO2涂层的厚度也对Ni的氧化影响不明显.对Y2O3或CeO2如何影响Ni的氧化性能进行了分析.
The effects of superficial Y2O3 coatings on the high-temperature oxidation of nickel at 900 ℃ in air were evaluated.For comparison,Ni substrates with and without superficial CeO2 coating were also prepared in the same condition.The results indicate that Y2O3 or CeO2 coatings result in a significant decrease in the oxidation rate of Ni,especially the former;however the oxidation mechanisms are essentially unaffected.The thickness of Y2O3 or CeO2 coatings has little influence on the oxidation rate of Ni.The beneficial effects of Y2O3 or CeO2 on the oxidation rate of Ni were discussed.
参考文献
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