Effect of Immersion Time on Corrosion Resistance of Phytic Acid Coatings on AZ91D-Mg Alloy

Bi Lan Lin; Yu Ye Xu; Wei Su

doi:10.4028/www.scientific.net/AMM.105-107.1653

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 105-107Effect of Immersion Time on Corrosion Resistance...

Effect of Immersion Time on Corrosion Resistance of Phytic Acid Coatings on AZ91D-Mg Alloy

Abstract:

Phytic acid coatings were formed on AZ91D-Mg alloy during immersion in 5.0 g/L phytic acid solution for different time. The corrosion resistance of the bare and coated samples was investigated using Tafel polarization and Electrochemical Impedance Spectroscopy (EIS) methods, and the corresponding electrochemical corrosion parameters were analyzed. The results show that the anodic and cathodic corrosion processes of AZ91D-Mg alloy are conspicuously inhibited with phytic acid coatings; the overall corrosion resistance index of AZ91D-Mg alloy is increased with immersion time; and the corrosion protection efficiency of phytic acid coatings is up to 97.8%.

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Periodical:

Applied Mechanics and Materials (Volumes 105-107)

Pages:

1653-1656

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.105-107.1653

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Online since:

September 2011

Authors:

Bi Lan Lin, Yu Ye Xu, Wei Su

Keywords:

Coating, Corrosion Resistance, EIS, Magnesium Alloy, Phytic Acid, Polarization

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