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

AutorFeliu, Jr., Sebastián; Samaniego, Alejandro; Bermudez, Elkin Alejandro; El-Hadad, Amir Abdelsami; Llorente, Irene; Galván, Juan Carlos
Fecha de publicación28-mar-2014
EditorMultidisciplinary Digital Publishing Institute
CitaciónMaterials 7 (4): 2534-2560 (2014)
ResumenPossible 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 NaHCO<sub>3</sub> 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.
URIhttp://hdl.handle.net/10261/164183
Identificadoresdoi: 10.3390/ma7042534
Aparece en las colecciones: Colección MDPI
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