[1]胡文娇,周勇,李依旋,等.Ni(2+)对铝合金磷化膜结构和耐蚀性的影响[J].电镀与精饰,2012,(1):1-4.
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Ni(2+)对铝合金磷化膜结构和耐蚀性的影响(
)
《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]
- 卷:
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- 期数:
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2012年1
- 页码:
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1-4
- 栏目:
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- 出版日期:
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2019-06-07
文章信息/Info
- Title:
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Effect of Ni~(2+) on Structure and Corrosion Resistance of Phosphate Conversion Coating on Aluminum Alloy
- 作者:
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胡文娇; 周勇; 李依旋; 张丹; 熊金平
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北京化工大学教育部碳纤维及功能高分子重点实验室;北京碧海舟腐蚀防护工业股份有限公司
- 分类号:
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TG174.45
- 摘要:
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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。
- 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.
更新日期/Last Update:
2019-06-07