| Effect of Y203 on microstructure and oxidation of γ-Ni＋γ′-Ni3Al coatings transformed from electrodeposited Ni-Al films at 1 000℃ |
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| 引用本文： | 周月波,张海军,王振廷.Effect of Y203 on microstructure and oxidation of γ-Ni＋γ′-Ni3Al coatings transformed from electrodeposited Ni-Al films at 1 000℃[J].中国有色金属学会会刊,2008,18(2):297-302. |
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| 作者姓名： | 周月波 张海军 王振廷 |
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| 作者单位： | ZHOU Yue-bo（College of Materials Science and Engineering, Heilongjiang Institute of Science and Technology,Harbin 150027, China） ;
ZHANG Hai-jun（College of Materials Science and Engineering, Heilongjiang Institute of Science and Technology,Harbin 150027, China） ;
WANG Zhen-ting（College of Materials Science and Engineering, Heilongjiang Institute of Science and Technology,Harbin 150027, China） ; |
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| 基金项目： | Project(06-13) supported by the Scientific Research Startup Foundation of Heilongjiang University of Science and Technology, China |
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| 摘 要： | The electrodeposited Y2O3-dispersed γ-Ni＋γ-Ni3Al coatings on Ni substrates were developed by the conversion of electrodeposited Ni-Al-Y2O3 films with dispersed AI microparticles in Ni matrix into Ni3Al by vacuum annealing at 800 ℃ for 3 h. For comparison, Y2O3-free γ-Ni＋γ＇-Ni3Al coatings with a similar AI content were also prepared by vacuum annealing the electrodeposited microparticle-dispersed composite coatings of Ni-AI under the same condition. SEM and TEM characterizations show that the electrodeposited Y2O3-dispersed γ＋γ＇ coatings exhibit finer grains, a more homogeneous distribution of γ＇, and a narrowed γ＇ phase spacing compared with the electrodeposited Y2O3-free γ-γ＇ coatings. The oxidation at 1 000 ~C shows that the addition of Y2O3 significantly improves the oxidation resistance of the electrodeposited γ＋γ＇coatings. The effect of Y2O3 particles on the microstructure and oxidation behavior of the electrodeposited γ＋y＇ coatings was discussed in detail.
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| 关 键 词： | 微观结构 氧化物 镍 电沉积技术 |
| 收稿时间： | 23 May 2007 |
Effect of Y2O3 on microstructure and oxidation of γ -Ni+γ′ -Ni3Al coatings transformed from electrodeposited Ni-Al films at 1 000 °C |
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| Yue-bo ZHOU, Hai-jun ZHANG,Zhen-ting WANG.Effect of Y2O3 on microstructure and oxidation of γ -Ni+γ′ -Ni3Al coatings transformed from electrodeposited Ni-Al films at 1 000 °C[J].Transactions of Nonferrous Metals Society of China,2008,18(2):297-302. |
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| Authors: | Yue-bo ZHOU Hai-jun ZHANG Zhen-ting WANG |
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| Affiliation: | College of Materials Science and Engineering, Heilongjiang Institute of Science and Technology, Harbin 150027, China |
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| Abstract: | The electrodeposited Y2O3-dispersed γ-Ni+γ ′-Ni3Al coatings on Ni substrates were developed by the conversion of electrodeposited Ni-Al-Y2O3 films with dispersed Al microparticles in Ni matrix into Ni3Al by vacuum annealing at 800 °C for 3 h. For comparison, Y2O3-free γ-Ni+γ ′-Ni3Al coatings with a similar Al content were also prepared by vacuum annealing the electrodeposited microparticle-dispersed composite coatings of Ni-Al under the same condition. SEM and TEM characterizations show that the electrodeposited Y2O3-dispersed γ+γ ′ coatings exhibit finer grains, a more homogeneous distribution of γ ′, and a narrowed γ ′ phase spacing compared with the electrodeposited Y2O3-free γ+γ ′ coatings. The oxidation at 1 000 °C shows that the addition of Y2O3 significantly improves the oxidation resistance of the electrodeposited γ+γ ′coatings. The effect of Y2O3 particles on the microstructure and oxidation behavior of the electrodeposited γ+γ ′ coatings was discussed in detail. |
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| Keywords: | electrodeposition γ-Ni+γ′-Ni3Al coatings vacuum annealing oxidation |
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