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Citation: MA Xu, YAO Su-Wei, ZHANG Wei-Guo, WANG Hong-Zhi. Structure and Corrosion Behavior of Electrodeposited Fe-W-ZrO₂ Nano-composite Coatings[J]. Acta Physico-Chimica Sinica, ;2007, 23(10): 1617-1621. doi: 10.3866/PKU.WHXB20071024 shu

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

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 Date: 11 May 2007
Available Online: 3 September 2007

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 ℃.
- Electrodeposition; Fe-W alloy; Amorphous; Nano-composite coatings; Corrosion resistance
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Structure and Corrosion Behavior of Electrodeposited Fe-W-ZrO₂ Nano-composite Coatings