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Materials 2014, 7(4), 2534-2560; doi:10.3390/ma7042534
Article

Effect of Native Oxide Film on Commercial Magnesium Alloys Substrates and Carbonate Conversion Coating Growth and Corrosion Resistance

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Received: 4 February 2014; in revised form: 19 March 2014 / Accepted: 21 March 2014 / Published: 28 March 2014
(This article belongs to the Special Issue Light Alloys and Their Applications)
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Abstract: Possible relations between the native oxide film formed spontaneously on the AZ31 and AZ61 magnesium alloy substrates with different surface finish, the chemistry of the outer surface of the conversion coatings that grows after their subsequent immersion on saturated aqueous NaHCO3 solution treatment and the enhancement of corrosion resistance have been studied. The significant increase in the amount of aluminum and carbonate compounds on the surface of the conversion coating formed on the AZ61 substrate in polished condition seems to improve the corrosion resistance in low chloride ion concentration solutions. In contrast, the conversion coatings formed on the AZ31 substrates in polished condition has little effect on their protective properties compared to the respective as-received surface.
Keywords: magnesium; XPS; SEM; passivity; segregation magnesium; XPS; SEM; passivity; segregation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Feliu, Jr., S.; Samaniego, A.; Bermudez, E.A.; El-Hadad, A.A.; Llorente, I.; Galván, J.C. Effect of Native Oxide Film on Commercial Magnesium Alloys Substrates and Carbonate Conversion Coating Growth and Corrosion Resistance. Materials 2014, 7, 2534-2560.

AMA Style

Feliu, Jr. S, Samaniego A, Bermudez EA, El-Hadad AA, Llorente I, Galván JC. Effect of Native Oxide Film on Commercial Magnesium Alloys Substrates and Carbonate Conversion Coating Growth and Corrosion Resistance. Materials. 2014; 7(4):2534-2560.

Chicago/Turabian Style

Feliu, Jr., Sebastián; Samaniego, Alejandro; Bermudez, Elkin A.; El-Hadad, Amir A.; Llorente, Irene; Galván, Juan C. 2014. "Effect of Native Oxide Film on Commercial Magnesium Alloys Substrates and Carbonate Conversion Coating Growth and Corrosion Resistance." Materials 7, no. 4: 2534-2560.


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