Dry Sliding Wear Behavior of Lead-Graphite Cast Metal Matrix Composites

Sharma , S S and Shenoy, Satish B and Shreeprakash, B and Kuttan, Appu K K (2007) Dry Sliding Wear Behavior of Lead-Graphite Cast Metal Matrix Composites. In: Int.national Conference on Advances in Manufacturing Engineering (ICAME 2007, October24 – 26, Manipal.

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Abstract

The effect of processing method and composition of composite on the room temperature sliding wear resistance of Lead-Graphite have been investigated. Semisolid stir casting technique was implemented for casting Lead- Graphite metal matrix composites with 1, 3 and 5 weight percentages of Graphite. The weight loss method technique was used to find specific wear rate at the respective sliding distance on pin-on-disc wear testing machine. The friction coefficient and cumulative specific wear rates are plotted against sliding distance. The specific wear rate curve shows the necessity of an optimum weight percentage of graphite in the composite to reduce the wear rate. The frictional coefficient versus sliding distance curve shows the decrease in frictional force at higher sliding distances as the weight percentage of particulates increases. At higher sliding distances, the surface of the specimen observed to be smooth which makes the graphite particles to expose as flakes and act as solid lubricant to reduce wear. The scanning electron microscope (SEM) image of the surface which is normal to the sliding surface also studied and it revealed the flake formation during wear. Both mild and severe wear phenomena were observed

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: particulate, metal matrix composites, stir casting, specific wear rate.
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 14 Mar 2013 11:15
Last Modified: 14 Mar 2013 11:15
URI: http://eprints.manipal.edu/id/eprint/79042

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