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

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

Abstract: In this report, the aluminium metal matrix was reinforced with 1.5 wt. % of Al2O3 nano particles using non-contact cavitation method to prepare the metal matrix nano composite. Microstructural examination conducted on the samples revealed a uniform distribution of alumina particulates. Sliding wear behavior of the as-cast MMNC was studied in dry condition, under different test conditions by varying the load and the sliding velocity, with an unlubricated Multiple Tribo Tester. It was found that resistance to sliding wear improved considerably with the addition of alumina nano particles. Microscopic examinations of the worn out surfaces of pure Al, Al-alloy (duralumin) and MMNC reveal that the MMNC has greater resistance to sliding wear compared to pure aluminium and duralumin. Wear increases with increase in load and sliding velocity. Wear is more when load and speed are increased in steps. Delamination and abrasion are the dominating types of wear observed.

Keywords: Sliding Wear, Al2O3, MMNC, Duralumin, Delamination and Abrasion.

DOI: https://doi.org/10.15623/ijret.2015.0407004