Comparison of Two Different Chemical Conversion Coating on Aluminum Alloy

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Abstract:

In this paper, we made two different chemical conversion coatings on aluminum alloy by TiOSO4 and Na2WO4. The morphology of the chemical conversion surface layers were observed by scanning electron microscopy (SEM). The microcosmic phase structures were characterized using X-ray diffraction (XRD). Electrochemical method was used to study the coatings corrosion resistance. The results indicated that the two conversion coatings were crystal structure material, the surface of coating were both show pothole structure. TiOSO4 coating have better corrosion resistance than Na2WO4 coating.

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Periodical:

Advanced Materials Research (Volumes 146-147)

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208-211

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Online since:

October 2010

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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