Laser Cladding of Zr₅₅Al₁₀Ni₅Cu₃₀/SiC Amorphous Composite Coatings on AZ91D Magnesium Alloy for Improvement of Wear Resistance

Abstract:

To improve the wear property of magnesium alloys, Zr-based amorphous composite coatings have been fabricated on AZ91D magnesium alloy by laser cladding using mixed powders Zr55Al10Ni5Cu30/SiC. The microstructure of the coating was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The wear resistance of the coatings was evaluated under dry sliding wear test condition at room temperature. The results show that the coatings mainly consist of amorphous and different crystalline phases. The coatings exhibit excellent wear resistance due to the recombination action of amorphous and different crystalline phases. The main wear mechanism of the coatings and the AZ91D sample are different, the former is abrasive wear and the latter is adhesive wear.

• Periodical: Advanced Materials Research (Volumes 160-162)
• Pages: 450-455
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.160-162.450
• Online since: November 2010
• Authors: Kai Jin Huang, Chao Dong Tan, Chang Rong Zhou
• Keywords: Amorphous, Laser Cladding, Magnesium Alloy, Wear

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