Friction and Wear Properties of Al-Based Hypereutectic Silicon Coatings Fabricated by Supersonic Particles Deposition on ZM5 Magnesium Alloy

Abstract:

To improve the anti-wear properties of Mg alloys, Al-13Si, Al-15Si and Al-19Si coatings were prepared by supersonic particles deposition on the surface of ZM5 magnesium alloy. Micro-structure and anti-wear properties of the coatings were examined by digital micro-hardness tester, XRD, friction and abrasion testing machine, three-dimensional microscope and SEM. The results show that the wear-resistant layer and the magnesium substrate can be well integrated as mechanical bonding and the main wear failure mechanism of the three coatings is adhesive wear. Moreover, the micro-hardness of Al-19Si coating is 141.47HV_0.05, much higher than Al-13Si coating (134.97HV_0.05) and Al-15Si coating (136.02HV_0.05). Besides, the anti-wear properties of Al-19Si coating is optimal, superior to Al-15Si coating and Al-13Si coating. All of those indicate that Al-19Si coating can provide the most excellent anti-wear protection for ZM5 magnesium alloy.

• Periodical: Advanced Materials Research (Volume 952)
• Pages: 125-129
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.952.125
• Online since: May 2014
• Authors: Xiao Jun Shi, Hai Bo Jiang*, Ju Kun Yao, Zhi Qian Wang, Chao Ji Zhou, Xiang Min Meng
• Keywords: Al-Si Coating, Anti-Wear Properties, Magnesium Alloy, Supersonic Particles Deposition

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