Abstract
Nano/micro-laminated (ZrO2–Y2O3)/(A12O3–Y2O3) composite coatings were deposited onto an Fe–25Cr–7Ni–N alloy substrate by using alternate electrochemical and sintering processes. The thickness of each layer was in the range of 80–500 nm. Experimental results indicated that the multi-laminated coatings were more effective in providing oxidation resistance than monolithic ZrO2–Y2O3 or A12O3–Y2O3 coatings, with the oxidation resistance of the former increasing with increasing number of laminated layers. The microstructural studies suggest that the laminated coatings possess the advantages of these two types of coatings and avoid the weakness of single ZrO2–Y2O3 or A12O3–Y2O3 coatings. Reactive elements Y and Zr also played a role in this nano-layered setting in improving the oxidation resistance of the coatings.
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This work is supported by National Natural Science Foundation of China (Grant No. 50271010) and Beijing Key Laboratory for Corrosion, Erosion and Surface Technology.
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Yao, M., He, Y., Wang, D. et al. Nano/Micro-Laminated (ZrO2–Y2O3)/(Al2O3–Y2O3) Composite Coatings and Their Oxidation Resistance. Oxid Met 68, 1–8 (2007). https://doi.org/10.1007/s11085-007-9057-y
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DOI: https://doi.org/10.1007/s11085-007-9057-y