WEAR CHARACTERISTICS OF PURE ALUMINIUM, AL-ALLOY & AL-ALUMINA METAL MTRIX NANO COMPOSITE IN DRY CONDITION: PART-II

Vyjainto Kumar Ray, Payodhar Padhi, B. B. Jha, Tapas Kumar Sahoo

Abstract: The aluminium metal matrix was reinforced with 1.5 wt. % of Al2O3 nano particles of 10 nm size using non-contact ultrasonic cavitation method to prepare the metal matrix nano composite. This paper reports wear rate and friction coefficient characteristics of the said composite. The influence of normal load and sliding velocity on both friction coefficient and wear rate was investigated with an unlubricated Multiple Tribo Tester by conducting sliding wear tests of the as-cast MMNC in dry condition, under different test conditions by varying the load and the sliding velocity. It was found that wear rate improved considerably with the addition of alumina nano particles. Wear rate increases with increase in load and sliding velocity. Similarly, it shows improved friction resistance. Worn out surfaces of the specimen were examined under FESEM which shows better wear resistance is offered by MMNC. This study reveals that the addition of the alumina particulates improves the wear rate and friction performance of the MMNC significantly.

Keywords: Wear rate, Al2O3, MMNC, Duralumin, Coefficient of friction

DOI: https://doi.org/10.15623/ijret.2015.0405047