| pH和时间对镁合金表面磷化膜形貌和耐蚀性的影响 |
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| 引用本文： | 周勇,熊金平,李依旋.pH和时间对镁合金表面磷化膜形貌和耐蚀性的影响[J].电镀与精饰,2012,34(2):9-12. |
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| 作者姓名： | 周勇 熊金平 李依旋 |
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| 作者单位： | 1. 北京化工大学教育部碳纤维及功能高分子重点实验室,北京 100029;北京化工大学材料科学与工程学院,北京 100029
2. 北京碧海舟腐蚀防护工业股份有限公司,北京,100029 |
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| 摘 要： | 用扫描电子显微镜和电化学阻抗谱研究了磷化液pH和磷化时间对镁合金表面磷化膜形貌和耐蚀性的影响。实验结果表明:当磷化液pH为2.5,磷化时间为20 min时,所得到的磷化膜对镁合金基体的保护作用最强,磷化膜在扫描电镜下观察呈连续的针尖状结构。
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| 关 键 词： | 镁合金 磷化膜 pH 磷化时间 耐蚀性 |
Influences of pH Value and Phosphating Time on the Morphology and Corrosion Resistance of Phosphate Coating on Magnesium Alloy |
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| ZHOU Yong
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XIONG Jin-ping
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LI Yi-xuan.Influences of pH Value and Phosphating Time on the Morphology and Corrosion Resistance of Phosphate Coating on Magnesium Alloy[J].Plating & Finishing,2012,34(2):9-12. |
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| Authors: | ZHOU Yong XIONG Jin-ping LI Yi-xuan |
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| Affiliation: | 1.Key Laboratory of Carbon Fiber and Functional Polymer of Education Ministry,Beijing University of Chemical Technology,Beijing 100029,China;2.School of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China;3.Beijing BBS Corrosion Protection Industry Co.Ltd,Beijing 100029,China) |
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| Abstract: | Influences of pH value and phosphating time on the morphology and corrosion resistance of phosphate coating on magnesium alloy were studied by scanning electron microscopy and electrochemical impedance spectrum.Results indicated that when pH value was 2.5 and phosphating time was 20 min,the phosphate coating showed a continuous needle-like microstructure and the best protective function. |
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| Keywords: | magnesium alloy phosphate coating pH value phosphating time corrosion resistance |
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