J Mater Sci Technol ›› 2007, Vol. 23 ›› Issue (04): 563-567.

• Research Articles • Previous Articles     Next Articles

Effect of nano Al pigment on the anti corrosive performance of waterborne epoxy coatings

Lili XUE, Likun XU, Qingfen LI   

  1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China...
  • Received:2007-04-02 Revised:2007-05-28 Online:2007-07-28 Published:2009-10-10
  • Contact: Likun XU

Abstract: This paper presents the results regarding the effect of nano aluminum powder pigment concentration on the protective properties of waterborne epoxy films in 3.5 wt pct NaCl solution. The anticorrosive performance of the coatings with 0.5, 1, and 3 wt pct pigments and none pigment were investigated using electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and Raman spectroscopy techniques. The results show that adding appropriate amount of nano-aluminium powder pigment can enhance the barrier properties of the epoxy coating, which is attributed to the surface effect of nanoparticles and the compatibility of the pigment with the waterborne epoxy coatings.

Key words: waterborne epoxy coating, nano Al, anticorrosion