| Ni2+对铝合金磷化膜结构和耐蚀性的影响 |
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| 引用本文： | 胡文娇,周勇,李依旋,张丹,熊金平.Ni2+对铝合金磷化膜结构和耐蚀性的影响[J].电镀与精饰,2012,34(1):1-4. |
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| 作者姓名： | 胡文娇 周勇 李依旋 张丹 熊金平 |
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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,100029北京
2. 北京碧海舟腐蚀防护工业股份有限公司,100029 北京 |
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| 摘 要： | 通过表面分析和电化学测试等研究了Ni2+对LY12铝合金表面锌系磷化膜结构和耐蚀性的作用.结果表明,LY12铝合金表面锌系磷化膜的主要成分是Zn3( PO4)2·4H2O,而Ni2+的细化晶粒作用使锌系磷化膜的结构变得更加完整致密,其加入不影响锌系磷化膜的化学组成和相组成；与不含Ni2+的磷化液处理相比,经含有Ni2+的磷化液处理后的铝合金在3.5％的NaCl溶液中的腐蚀电流密度明显下降,在100 mHz频率下的阻抗值明显增大,表现出良好的防护性.
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| 关 键 词： | LY12铝合金 磷化膜 镍离子 耐蚀性 |
Effect of Ni2+ on Structure and Corrosion Resistance of Phosphate Conversion Coating on Aluminum Alloy |
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| HU Wen-jiao
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ZHOU Yong
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LI Yi-xuan
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ZHANG Dan
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XIONG Jin-ping.Effect of Ni2+ on Structure and Corrosion Resistance of Phosphate Conversion Coating on Aluminum Alloy[J].Plating & Finishing,2012,34(1):1-4. |
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| Authors: | HU Wen-jiao ZHOU Yong LI Yi-xuan ZHANG Dan XIONG Jin-ping |
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| Affiliation: | 1(1.Key Laboratory of Carbon Fiber and Functional Polymer of the Ministry of Education,Beijing University of Chemical Technology,Beijing 100029,China;2.Beijing BBS Corrosion Protection Industry Co.LTD,Beijing 100029,China) |
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| Abstract: | Effect of Ni2+ on structure and corrosion resistance of zinc system phosphate conversion coating on aluminum alloy LY12 was studied by surface analysis approaches and electro-chemical technologies.Results showed that main component of the coating was Zn3(PO4)2·4H2O,structure of the coating became more complete and compact due to grain refinement function of the Ni2+ and both chemical and phase composition of the coating were not affected by the Ni2+,for the aluminum alloy phosphated in Ni2+ containing bath,corrosion current density decreased clearly and impedance increased clearly at 100 mHz frequency in 3.5% NaCl solution compared with that in Ni2+ -free phosphating bath. |
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| Keywords: | aluminum alloy LY12 phosphate coating nickel ions corrosion resistance |
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