Laser Cladding of Mg₆₅Cu₂₅Y₁₀/SiC Amorphous Composite Coatings on AZ91D Magnesium Alloy for Improvement of Corrosion Resistance

Abstract:

To improve the corrosion property of magnesium alloys, Mg-based amorphous composite coatings have been fabricated on AZ91D magnesium alloy by laser cladding using mixed powders Mg65Cu25Y10/SiC. The microstructure of the coating was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The corrosion resistance of the coatings was tested in 3.5wt.% NaCl solution. The results show that the coatings mainly consist of amorphous and different crystalline phases. The coatings compared to AZ91D magnesium alloy exhibit good corrosion resistance because of the presence of the amorphous phase in the coatings.

• Periodical: Advanced Materials Research (Volumes 143-144)
• Pages: 758-762
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.143-144.758
• Online since: October 2010
• Authors: Kai Jin Huang, Hou Guang Liu, Chang Rong Zhou
• Keywords: Amorphous, Corrosion, Laser Cladding, Magnesium Alloy

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