Abstract

Aluminium alloy LM25 utilization is restricted in many requirements due to less wear resistance and frictional force resistance. In this paper, to enhance its properties for such applications, it is reinforced with nano Alumina (Al2O3). A series of LM25 Aluminium alloy with 0, 1, 1.5, 2% weight of nano Al2O3 particle were fabricated in liquid process technique using stir casting. The nanoparticles distributed uniformly in the metal by means of enhanced wettability of particles with the matrix LM25 Alloy as confirmed by doing Scanning Electron Microscopy. The tribological behaviour of LM25 Aluminium alloy with nano Al2O3 was investigated by pin on disc apparatus. The results show that nano Al2O3 particles addition with the LM25 alloy has improved the wear resistance of LM25 Aluminium alloy significantly. Also, friction coefficient can be made as an optimum. A comparison of wear performance and the friction of LM25 Aluminium alloy with metal matrix composite containing 1, 1.5 and 2% by weight was done. Increase in volume percentage of nano Alumina particles reinforcement has reduced the wear and frictional force.

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