| 镁合金AZ31无铬无氟无亚硝酸盐磷化膜的制备及耐蚀性能(英文) |
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| 引用本文： | 崔学军,刘春海,杨瑞嵩,李明田,林修洲,龚敏.镁合金AZ31无铬无氟无亚硝酸盐磷化膜的制备及耐蚀性能(英文)[J].中国有色金属学会会刊,2012,22(11):2713-2718. |
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| 作者姓名： | 崔学军 刘春海 杨瑞嵩 李明田 林修洲 龚敏 |
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| 作者单位： | 四川理工学院材料腐蚀与防护四川省重点实验室;四川理工学院材料与化学工程学院 |
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| 基金项目： | Projects (2011CL08, 2011CL01) supported by Open Fund of Material Corrosion and Protection Key Laboratory of Sichuan Province, China;Project (2011RC02) supported by Talent Introduction Funds of Sichuan University of Science;Project (12ZA261) supported by Key Project of Education Department of Sichuan Province, China |
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| 摘 要： | 以磷酸二氢锰和无氟、无铬、无亚硝酸盐的添加剂为主要成分,通过化学沉积的方法在镁合金AZ31表面获得致密均匀的耐蚀磷化膜。通过硫酸铜点蚀测试、SEM、XRD及电化学极化曲线等表征手段,详细研究了膜层的形貌、组成、相结构及耐蚀性能,讨论了成膜温度和游离酸对膜层微结构、形貌及耐蚀性能的影响。结果表明,磷化膜通过抑制阳极溶解和阴极析氢,有效地提高了镁合金AZ31的耐蚀性能。
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| 关 键 词： | 镁合金 AZ31合金 磷酸盐转化膜 无铬 耐蚀 阳极溶解 阴极析氢 |
| 收稿时间： | 8 August 2011 |
Phosphate film free of chromate, fluoride and nitrite on AZ31 magnesium alloy and its corrosion resistance |
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| CUI Xue-jun,LIU Chun-hai,YANG Rui-song,LI Ming-tian,LIN Xiu-zhou,GONG Min.Phosphate film free of chromate, fluoride and nitrite on AZ31 magnesium alloy and its corrosion resistance[J].Transactions of Nonferrous Metals Society of China,2012,22(11):2713-2718. |
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| Authors: | CUI Xue-jun LIU Chun-hai YANG Rui-song LI Ming-tian LIN Xiu-zhou GONG Min |
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| Affiliation: | 1, 2 1. Material Corrosion and Protection Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Zigong 643000, China; 2. College of Materials and Chemical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China |
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| Abstract: | A phosphate solution free of chromate, fluoride and nitrite was prepared and an environment-friendly film was obtained on AZ31 magnesium alloy surface via the chemical deposition method. The morphology, composition, phase structure and its corrosion resistance were studied. The effects of film-forming temperature and free acid on corrosion resistance, microstructure and electrochemical behavior of the film were discussed. The results indicate that the corrosion resistance of AZ31 with the phosphate film was better than blank AZ31 substrate, which was most attributed to the great inhibitive action on the anodic dissolution and cathodic hydrogen evolution of the film. |
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| Keywords: | magnesium alloy AZ31 alloy phosphate conversion coating chromate-free film corrosion resistance anodic dissolution cathodic hydrogen evolution |
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