| GUI Yan.Corrosion Resistance of Hot Dip Zn-Ti Coating[J],37(5):33-35 |
| Corrosion Resistance of Hot Dip Zn-Ti Coating |
| Received:July 02, 2008 Revised:October 10, 2008 |
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| DOI： |
| KeyWord:Hot dip galvanizing Zn-Ti coating Corrosion resistance |
| Author | Institution |
| GUI Yan |
Guangzhou Panyu Polytechnic, Guangzhou , China |
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| Abstract: |
| Zn-Ti galvanizing coatings were prepared on low carbon steel by hot dip galvanizing in Zn-Ti baths in order to restrain the growth of alloy layer. The corrosion resistance of the coatings was studied by immersion test, electrochemical polarization, electrochemical impedance spectroscopy ( EIS) and X-ray photoelectron spectrum ( XPS) analysis. The corrosion rate of Zn-0.05% Ti coating is less than that of pure zinc coating in 50/o NaCl solution. Zn-0. 050/o Ti coating shows lower corrosion current, increased polarization resistance and electrochemical impedance, presents the better corrosion resistance than pure zinc coating. The oxide film of Zn-Ti coating is composed of Zno and Ti02. The excellent corrosion resistance of Zn-Ti coating results from the reason that the present of more steady Ti02 film. |
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