J Mater Sci Technol ›› 2007, Vol. 23 ›› Issue (04): 551-558.

• Research Articles • Previous Articles     Next Articles

Effects of nano pigments on the corrosion resistance of alkyd coating

Hongwei SHI, Fuchun LIU, Enhou HAN, Yinghua WEI   

  1. 中科院金属研究所
  • Received:2007-01-12 Revised:2007-04-03 Online:2007-07-28 Published:2009-10-10
  • Contact: Enhou HAN

Abstract: Alkyd coatings embedded with nano-TiO2 and nano-ZnO pigments were prepared. The effects of nano pigments on anticorrosion performance of alkyd coatings were investigated using electrochemical impedance spectrum (EIS). For the sake of comparison, the corrosion protection of alkyd coatings with conventional TiO2 and ZnO was also studied. It was found that nano-TiO2 pigment improved the corrosion resistance as well as the hardness of alkyd coatings. The optimal amount of nano-TiO2 in a colored coating for corrosion resistance was 1%. The viscosities of alkyd coatings with nanometer TiO2 and ZnO and conventional TiO2 and ZnO pigments were measured and the relation between viscosity and anticorrosion performance was discussed.

Key words: Electrochemical impedance spectrum (EIS), Alkyd coating, Nano-TiO2, Nano-ZnO, Corrosion resistance