Studies On Wear And Tear Performance Of Al₂O₃ Particle Reinforced Aluminum- Manganese Matrix Composite Under Dry Sliding

In order to find efficient way to improve wear and tear performance of Al-MMC/Al₂O₃p (Al-Mn based metal matrix particle composite reinforced by Al2O3 particles) under dry sliding. This paper takes wear and tear experiments on Al-MMC based on M-2000 wear and tear experimental machine and tentatively analyses the results for further research.This paper mainly studies significant indexes (e g. weight loss, wear rate, friction coefficient) that have great influence on the wear and tear performance of composite under dry sliding. The microstructure , ingredient and worn surfaces of composite are discussed assisted by the method of SEM, spectroscopy, EDS and metallurgical microscope. The results show that the weight loss and wear rate of composite are low compared with traditional material. The friction coefficient of Al-MMC is added with increasing outer load. However, the scope of fluctuation is not large. The friction coefficient stability of composite is better than traditional materials. The results also show that the principal wear mechanism for composite is oxidative wear and abrasive wear at low load. With increasingly added load ,the wear mechanism has changed into adhesive wear and abrasive wear.From the above analyses, it can be seen that Al-MMC has stable friction coefficient and low wear rate .Based on those character, composites will become substitution for traditional material in the near future.