| 电压对7N01铝合金阳极氧化膜结构及耐蚀性的影响 |
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| 引用本文： | 王晗,孙琳,陈虹玮,唐慧慧,陈明安.电压对7N01铝合金阳极氧化膜结构及耐蚀性的影响[J].电镀与涂饰,2020(1):36-41. |
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| 作者姓名： | 王晗 孙琳 陈虹玮 唐慧慧 陈明安 |
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| 作者单位： | 中南大学材料科学与工程学院;中车青岛四方机车车辆股份有限公司 |
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| 基金项目： | 国家重点研发计划项目（2016YFB0300901） |
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| 摘 要： | 采用160 g/L硫酸溶液在17°C下对7N01铝合金阳极氧化30 min,氧化电压分别选取14、15、16、17和18 V。用扫描电镜观察所得阳极氧化膜的形貌,用能谱仪和电化学测量分析了它的成分、厚度和耐蚀性。结果表明,7N01铝合金经过不同电压下的阳极氧化处理后,表面均能形成凹凸不平并有孔洞的阳极氧化膜,电压为17 V时所制膜层致密、均匀,厚度约为7.6μm,耐蚀性最佳,在3.5%NaCl溶液中浸泡1440 h后没有明显的腐蚀。
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| 关 键 词： | 铝合金 阳极氧化 电压 微观结构 耐蚀性 |
Effect of voltage on microstructure and corrosion resistance of anodic oxide film on 7N01 aluminum alloy |
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| Affiliation: | (School of Materials Science and Engineering,Central South University,Changsha 410083,China;不详) |
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| Abstract: | 7N01 aluminum alloy was anodized in 160 g/L sulfuric acid solution at temperature 17°C and different voltages(14 V,15 V,16 V,17 V,or 18 V)for 30 min.The surface morphology of the anodic oxide film was observed with scanning electron microscope,and its composition,thickness,and corrosion resistance were analyzed by energy-dispersive spectroscopy and electrochemical measurements.The results showed that anodic oxide films with unsmooth and porous structure were formed on the surface of 7N01 aluminum alloy after anodization at different voltages.The film prepared at 17 V was compact and uniform,had a thickness of about 7.6μm,and could endure the corrosion in 3.5%NaCl solution for 1440 hours,showing the best corrosion resistance. |
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| Keywords: | aluminum alloy anodization voltage microstructure corrosion resistance |
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