Microstructure and Wear Behavior of SiC_P-Reinforced Magnesium Matrix Composite by Cold Spraying

Abstract:

In this paper, dense AZ91D/SiC composite coatings were fabricated by cold spraying. The microstructure and microhardness of the as-sprayed coatings were investigated. The results show that the content of SiC particles in the composite coating was 23.6 ± 7.5 vol.%. The microhardness of the composite coating was improved to 140 HV0.3 due to the enhancement of SiC particles, compared to 98 HV0.3 for the pure AZ91D coating. The wear behavior of the composite coating in an ambient condition was studied through a ball-on-disc dry sliding test system. The composite coating showed higher friction coefficient and lower wear rate than the pure AZ91D coating. The wear mechanism of the composite coating was discussed.

• Periodical: Advanced Materials Research (Volumes 314-316)
• Pages: 253-258
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.314-316.253
• Online since: August 2011
• Authors: Xin Kun Suo, Xue Ping Guo, Wen Ya LI, Marie Pierre Planche, Chao Zhang, Han Lin Liao
• Keywords: Cold Spraying, Composite Coating, Mg Alloy, Wear Behavior

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