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| EFFECTS OF ALUMINUM POWDERS ON THE SINTERED ZINC-ALUMINUM COATINGS |
| LI Ning; XU Likun;WANG Hongren;JIANG Lina |
| State Key Laboratory for Marine Corrosion and Protection;
Luoyang Ship Material Research Institute; Qingdao 266071 |
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Abstract The effects of aluminum powders with different shapes and sizes on the surface morphology, corrosion
resistance and electrochemical behavior of the coating were studied by means of scanning electron microscope
（SEM）, X-ray diffraction（XRD）, neutral salt spray test and electrochemical impedance spectroscopy. The
results show that aluminum powders can improve the appearance of the coatings, and can also increase the
corrosion resistance of the coatings by extending the electrochemical protection term of zinc powders, with a
better effectiveness for the small-size and well-dispersed Al powders.
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Received: 28 May 2007
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