Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (10): 1617-1621.doi: 10.3866/PKU.WHXB20071024

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Structure and Corrosion Behavior of Electrodeposited Fe-W-ZrO2 Nano-composite Coatings

MA Xu; YAO Su-Wei; ZHANG Wei-Guo; WANG Hong-Zhi   

  1. SUGIYAMA Laboratory of Surface Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China; Nano-parts Key Laboratory, Material Science and Engineering school, Tianjin University of Technology, Tianjin 300191, P. R. China
  • Received:2007-05-11 Revised:2007-07-31 Published:2007-10-01
  • Contact: YAO Su-Wei E-mail:yaosuwei@263.net

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Abstract: New Fe-W-ZrO2 nano-composite layers were prepared by composite electrodeposition technology. The morphology, composition, structure, hardness and corrosion resistance properties of the coatings were systematically characterized by means of SEM, EDS, X-ray diffraction and potentiostat methods. The results showed that when the mass composition of the obtained Fe-W-ZrO2 composite coating was Fe 38.3%(w)、W 52.7%(w)、ZrO2 9.0%(w), the crack condition of Fe-W alloy coatings was improved markedly by the dispersion strengthening effect of the ZrO2 nano-particle. Meanwhile, the composite coatings presented an obvious amorphous characteristics, compact structure, and uniform composition. In comparison with Fe-W alloy coatings, not only the hardness of the composite coatings was higher, but also the corrosion resistance was enhanced evidently in 3.5%(w) NaCl and 0.5 mol·L-1 H2SO4 solution at 30 ℃.

Key words: Electrodeposition, Fe-W alloy, Amorphous, Nano-composite coatings, Corrosion resistance