| Abstract |
| The dry sliding wear tests were performed on A356-20 vol.% SiCp composites with and without surface coating. Thick alumina coatings were performed on A356-20 vol.% SiCp composites by micro-arc oxidation (MAO) process with different processing time. The samples were tested by pin-on-disc wear test equipment with different applied load and sliding velocity. It showed that MAO coated samples exhibited superior resistance to wear compared with uncoated samples in the severe wear conditions. Through 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. |
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| Key Words |
| Micro-arc oxidation, Coating, Aluminum matrix composites, Dry sliding wear, MML |
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