Effect of (NaPO3)6 on Sea Water Corrosion Resistance of Micro-Arc Oxidation Ceramic Coatings Formed on Pure Aluminum

Shi Jie Li; Lu Ming Wang; Xiao Feng

doi:10.4028/www.scientific.net/AMM.300-301.1259

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 300-301Effect of (NaPO3)6 on Sea Water Corrosion...

Effect of (NaPO₃)₆ on Sea Water Corrosion Resistance of Micro-Arc Oxidation Ceramic Coatings Formed on Pure Aluminum

Abstract:

(NaPO₃)₆ was added to Na₂SiO₃-KOH electrolyte system ,and in-situ ceramic membranes were prepared on pure aluminum by micro-arc oxidation technique. The composition and structure of the micro-arc oxidation ceramic layer and the influence on the performance of the corrosion resistant to sea water were studied through the scanning electron microscopy,X ray diffraction and electrochemical polarization curve method.The results show that the ceramic membrane formed in electrolyte containing (NaPO₃)₆ indicate a considerable increase in coating compactness and bond strength.The dynamic potential polarization curves in simulation sea water show that adding proper (NaPO₃)₆ can increase the ability to resistant the sea water corrosion.When the mass concentration is 2g/L,the corrosion resistant to sea water is the best.

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Periodical:

Applied Mechanics and Materials (Volumes 300-301)

Pages:

1259-1262

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.300-301.1259

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Online since:

February 2013

Authors:

Shi Jie Li, Lu Ming Wang, Xiao Feng

Keywords:

(NaPO₃)₆, Micro-Arc Oxidation (MAO), Pure Aluminum, Sea Water Corrosion Resistant

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