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| 氧化时间对7A55铝合金微弧氧化膜的影响 | |
| 引用本文： | 李忠盛,吴护林,潘复生,张隆平,何庆兵.氧化时间对7A55铝合金微弧氧化膜的影响[J].航空材料学报,2009,29(3):23-26. |
| 作者姓名： | 李忠盛 吴护林 潘复生 张隆平 何庆兵 |
| 作者单位： | 1. 中国兵器工业第五九研究所,重庆,400039;重庆大学,材料科学与工程学院,重庆,400030 2. 中国兵器工业第五九研究所,重庆,400039 3. 重庆大学,材料科学与工程学院,重庆,400030 |
| 摘 要： | 采用恒流微弧氧化法在碱性硅酸盐-磷酸盐体系电解液中对7A55铝合金进行了微弧氧化处理,研究了氧化时间对微弧氧化膜表面形貌、厚度和相组成的影响.研究结果表明,在恒定的电参数(电流密度为6A/dm2,占空比均为30%,频率为1000Hz)条件下,随着氧化时间的延长,阳极电压逐渐增大,氧化膜表面微孔孔径逐渐增大,微孔数量逐渐减少,膜层厚度随氧化时间近似呈线性增加;膜层主要由γ-Al2O3相组成. |
| 关 键 词： | 微弧氧化 7A55铝合金 氧化时间 组织结构 |
Effect of Oxidation Time on Micro-arc Oxidation Ceramic Coatings Formed on 7A55 Aluminium Alloy |
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| LI Zhong-sheng,WU Hu-lin,PAN Fu-sheng,ZHANG Long-ping,HE qing-bing.Effect of Oxidation Time on Micro-arc Oxidation Ceramic Coatings Formed on 7A55 Aluminium Alloy[J].Journal of Aeronautical Materials,2009,29(3):23-26. | |
| Authors: | LI Zhong-sheng WU Hu-lin PAN Fu-sheng ZHANG Long-ping HE qing-bing |
| Institution: | 1.No.59 Institute of China Ordnance Industry;Chongqing 400039;China;2.Materials Science and Engineering College;Chongqing University;Chongqing 400030;China |
| Abstract: | Ceramic oxide coatings were formed on 7A55 aluminium alloy surface by micro-arc oxidation(MAO) at the constant current density of 6A/dm2 in Na2SiO3-NaOH-(NaPO3)6 solution.The effects of oxidation time on surface microphologies,thickness and phase composition of the micro-arc oxidation coatings were investigated.The results indicate that with increasing oxidation time,anodic voltage increases gradually and the number of micropores of the MAO coatings decreases while the size of the micropores increases with ... |
| Keywords: | Micro-arc oxidation 7A55 aluminium alloy oxidation time microstructure |
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