辽宁石油化工大学学报

辽宁石油化工大学学报 ›› 2010, Vol. 30 ›› Issue (3): 44-47.DOI: 10.3696/j.issn.1672-6952.2010.03.012

• 化工机械 • 上一篇    下一篇

碘化钾对铝合金表面化学镀镍耐蚀性的影响

梁 平,张云霞   

  1. 辽宁石油化工大学,辽宁抚顺113001
  • 收稿日期:2010-03-25 出版日期:2010-09-25 发布日期:2017-07-05
  • 作者简介:梁平(1974-),男,辽宁沈阳市,讲师,博士。

Effects of KI on the Corrosion Resistance of Electroless Ni-P Plating Coating on Aluminum Alloy

 

LIANG Ping, ZHANG Yun-xia
  

  1. Liaoning Shihua University, Fushun Liaoning 113001, P.R. China
  • Received:2010-03-25 Published:2010-09-25 Online:2017-07-05

摘要: 通过扫描电子显微镜考察了碘化钾(KI)对2024铝合金表面化学镀Ni-P层表面形貌的影响,采用
浸泡法和动电位极化以及交流阻抗等电化学方法,研究了KI对Ni-P镀层在质量分数为3.5%的NaCl溶液中腐蚀
行为的影响。实验结果表明,KI减少了Ni-P镀层中表面缺陷的数量,细化了晶粒,镀层更加平整致密,表面质量得
到改善。同时,KI也增加了镀层中磷的质量分数。这两个原因使Ni-P镀层的耐蚀性进一步提高。

关键词: 铝合金 , 化学镀 ,  ,  , 碘化钾 , 耐蚀性

Abstract:  

The effect of KI on the surface micrograph of electroless Ni-P coating for 2024 aluminum alloy was observed using scanning electron microscopy (SEM), and corrosion resistance of Ni-P coating in 3.5%NaCl solution was investigated by immersion, potendynamic polarization curves and electrochemical impedance spectroscopy(EIS). The experimental results show that KI reduces the amount of defect such pole in Ni-P coating, and the crystal grain becomes finer. The surface morphology of Ni-P coating gets more homogenous and smoother. Moreover, the phosphorus content of Ni-P coating is increased by KI. Both factors contribute to a better corrosion resistance for Ni-P coating in 3.5% NaCl solution.

Key words: Aluminum alloy , Electroless plating , KI ,  , Corrosion resistance

引用本文

梁平,张云霞. 碘化钾对铝合金表面化学镀镍耐蚀性的影响[J]. 辽宁石油化工大学学报, 2010, 30(3): 44-47.

LIANG Ping, ZHANG Yun-xia. Effects of KI on the Corrosion Resistance of Electroless Ni-P Plating Coating on Aluminum Alloy[J]. Journal of Liaoning Petrochemical University, 2010, 30(3): 44-47.

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链接本文: http://journal.lnpu.edu.cn/CN/10.3696/j.issn.1672-6952.2010.03.012

               http://journal.lnpu.edu.cn/CN/Y2010/V30/I3/44