| 引用本文: | 索相波,邱 骥,朱海燕.铝合金表面微弧氧化纳米SiO2复合涂层的元素及物相分析[J].材料科学与工艺,2013,21(2):50-54.DOI:10.11951/j.issn.1005-0299.20130209. |
| SUO Xiang-bo,QIU Ji,ZHU Hai-yan.Analysis of elements and phases of nano-SiO2 composite layer formed on aluminum alloy by micro-arc oxidation[J].Materials Science and Technology,2013,21(2):50-54.DOI:10.11951/j.issn.1005-0299.20130209. |
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| 摘要: |
| 为提高微弧氧化层性能,通过向微弧氧化电解液中添加纳米SiO2颗粒,在7A52铝合金表面制备了纳米SiO2复合微弧氧化层.利用扫描电镜、能谱仪和X射线衍射仪表征了纳米SiO2复合微弧氧化层的微观组织、元素分布特征及物相组成.研究表明:纳米SiO2颗粒与微弧氧化层复合生长到一起,在微弧氧化层中大致均匀分布；纳米SiO2在微弧氧化层中主要以无定形态存在,同时SiO2与微弧氧化层主体成分Al2O3发生相变反应,生成新物相-莫来石. |
| 关键词: 微弧氧化 铝合金 纳米复合 相组成 涂层 |
| DOI：10.11951/j.issn.1005-0299.20130209 |
| 分类号: |
| 基金项目:“十二五”装备预先研究资助项目(51327040101). |
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| Analysis of elements and phases of nano-SiO2 composite layer formed on aluminum alloy by micro-arc oxidation |
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SUO Xiang-bo1,QIU Ji2,ZHU Hai-yan2
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(1.Department of General Technology,JIUQUAN Satellite Launching Center,Jiuquan 732750,China; ;2.Faculty of Remanufacture Engineering,Academy of Armored Force Engineering,Beijing 100072,China)
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| Abstract: |
| Nano-SiO2 composite layer was prepared on aluminum alloy surface via micro-arc oxidation.This was achieved by adding nano-SiO2 particles into the electrolyte.The microstructure,element distribution and phase composition of the nano-SiO2 composite layer were characterized using scanning electron microscopy,energy dispersive spectroscopy and X-ray diffraction.The results showed that nano-SiO2 particles were combined into the oxide layer and were roughly and evenly distributed;Nano-SiO2 in the micro-arc oxidation layer was mainly amorphous.A new phase-mullite was produced from the phase transition reaction between SiO2 and Al2O3,which were the main content of oxide layer. |
| Key words: micro-arc oxidation aluminum alloy Nano-composites phase composition coating |
