| Al2O3-Y2O3 Nano- and Micro-Composite Coatings on Fe-9Cr-Mo Alloy |
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| 引用本文： | 姚明明 何业东 张颖 杨秋霞. Al2O3-Y2O3 Nano- and Micro-Composite Coatings on Fe-9Cr-Mo Alloy[J]. 中国稀土学报(英文版), 2006, 24(5): 587-590. DOI: 10.1016/S1002-0721(06)60169-5 |
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| 作者姓名： | 姚明明 何业东 张颖 杨秋霞 |
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| 作者单位： | [1]School of Chemistry and Chemical Engineering, Jinan University, Jinan 250022, China [2]Beijing Key Laboratory for Corrosion, Erosion and Sugrace Technology, University of Science and Technology Beijing, Beijing 100083, China |
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| 基金项目： | 国家自然科学基金，the Doctorial Foundation of Jinan University |
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| 摘 要： | Al2O3-Y2O3 nano- and micro-composite coatings were deposited on Fe-9Cr-Mo substrates by using sol-gel composite coating technology. The processing includes dipping samples in a sol-gel solution dispersed with fine ceramic powders, which are prepared by high-energy ball milling. High-resolution microscopy （FE-SEM） analyses show that the coating is composed of composite particle clusters with an average diameter of 1μm, and the coating is relatively dense without cracking during drying and sintering stages. XRD analyses show that the oxide coating is mainly composed of α-Al2O3 and γ-Al2O3. The oxidation tests performed at 600℃ in air show that the coatings are provided with much improved resistance against high temperature oxidation and scale spallation. It is indicated that nano-structured composite particles and reactive elements are integrated into the coatings, which plays an important role in preventing agglomeration of nano-particles and initiation of cracks.
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| 关 键 词： | 溶胶-凝胶 纳米/显微颗粒 复合材料涂敷 氧化 稀土元素 |
| 文章编号： | 1002-0721（2006）05-0587-04 |
| 收稿时间： | 2006-01-06 |
| 修稿时间： | 2006-06-21 |
Al2O3-Y2O3 Nano- and Micro-Composite Coatings on Fe-9Cr-Mo Alloy |
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| Yao Mingming,He Yedong,Zhang Ying,Yang Qiuxia. Al2O3-Y2O3 Nano- and Micro-Composite Coatings on Fe-9Cr-Mo Alloy[J]. Journal of Rare Earths, 2006, 24(5): 587-590. DOI: 10.1016/S1002-0721(06)60169-5 |
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| Authors: | Yao Mingming He Yedong Zhang Ying Yang Qiuxia |
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| Affiliation: | 1. Département Sciences du Vivant, Centre wallon de Recherches agronomiques, chaussée de Charleroi 234, 5030 Gembloux, Belgium;2. URBC-NARILIS, Université de Namur, rue de Bruxelles 61, 5000 Namur, Belgium;3. MaSUN, Mass spectrometry facility, Université de Namur, rue de Bruxelles 61, 5000 Namur, Belgium |
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| Abstract: | Al2O3-Y2O3 nano- and micro-composite coatings were deposited on Fe-9Cr-Mo substrates by using sol-gel composite coating technology. The processing includes dipping samples in a sol-gel solution dispersed with fine ceramic powders, which are prepared by high-energy ball milling. High-resolution microscopy (FE-SEM) analyses show that the coating is composed of composite particle clusters with an average diameter of 1μm, and the coating is relatively dense without cracking during drying and sintering stages. XRD analyses show that the oxide coating is mainly composed of α-Al2O3 and γ-Al2O3. The oxidation tests performed at 600 C in air show that the coatings are provided with much improved resistance against high temperature oxidation and scale spallation. It is indicated that nano-structured composite particles and reactive elements are integrated into the coatings, which plays an important role in preventing agglomeration of nano-particles and initiation of cracks. |
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| Keywords: | sol-gel nano-/micro-particles composite coatings oxidation rare earths |
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