Effect of Sliding Speed on Tribological Properties of Microwave Sintered Copper-Graphite Composites

Abstract:

Effects of graphite content, and sliding speed on the tribological characteristics of copper-graphite composites under dry sliding condition were evaluated using a pin-on-disc tribometer. The worn surfaces of the composites were analyzed through Scanning Electron Microscopy (SEM). The experimental results revealed the improvement in wear resistance with increasing graphite content. The friction coefficient is also gradually decreasing upto 25 vol% graphite. Sliding speed has an effect on copper (5-15 vol%) graphite composites where as sliding speed has no effect in copper-(20-30 vol%) graphite composites. This difference is attributed to availability of self-lubricating graphite layer at the contact zone.

• Periodical: Applied Mechanics and Materials (Volumes 592-594)
• Pages: 1305-1309
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.592-594.1305
• Online since: July 2014
• Authors: K. Rajkumar*, S. Aravindan
• Keywords: Copper Matrix, Electrical Sliding Contact, Graphite, Wear

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