Effects of Surface Coating on Wear Properties of A356-20vol.%SiCp Composites

Abstract:

Thick alumina coatings were performed on A356-20vol.% SiCp composites by micro-arc oxidation (MAO) process with different processing time. The dry sliding wear tests were performed on A356-20vol.% SiCp composites with and without surface coating. The samples were tested by pin-on-disc wear test equipment with different applied load and sliding velocity. It is revealed that MAO coating improves resistance to wear of A356-20vol.% SiCp composites in the severe wear conditions. On the basis of the observations and analysis of the worn surface, worn subsurface, wear debris and variation of friction coefficient, the role of MAO coating layer is examined.

• Periodical: Solid State Phenomena (Volumes 124-126)
• Pages: 1409-1412
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.124-126.1409
• Online since: June 2007
• Authors: Jung Moo Lee, Suk Bong Kang, Jian Min Han
• Keywords: Dry Sliding Wear, Metal Matrix Composite (MMC), Micro-Arc Oxidation (MAO)

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