Effect of Graphite Particles Addition on the Wear Resistance and Friction coefficient of Brass Alloy (α)

Abdel-Qader, Esraa; Baqer, Maryam Abdual-Alazim

doi:10.30684/etj.27.6.20

	Effect of Graphite Particles Addition on the Wear Resistance and Friction coefficient of Brass Alloy (α)
Engineering and Technology Journal
Article 1, Volume 27, Issue 6, 2009, Pages 218-233 PDF (421.62 K)
DOI: 10.30684/etj.27.6.20
Authors
Esraa Abdel-Qader; Maryam Abdual-Alazim Baqer
Abstract
This research is devoted to study the effect of different percentage of Graphite particles addition (5,10,15) wt% to Brass alloy (α) produced by stir casting using vortex technique , on the wear resistance and the coefficient of friction under dry sliding conditions using pin-on-disk technique . Three loads (5, 10, 15) N were used at different sliding speeds effect (2.7,3.7,4.7) m/sec . The results showed that the wear rate is increased in general with increasing the applied load , but the composite material reinforced with graphite particles showed wear rate lower than that of the base alloy .The wear resistance of the composite material reinforced with graphite particles with 15 wt% was higher than that of reinforced with 5 wt% . When different sliding speeds were used , the results showed that , the wear rate is decreased with increasing sliding speed .When the coefficients of friction was measured at high loads , It is clear that the composite material has low coefficient of friction as compared with that at low loads , while it is decreased with increasing sliding distance at all used loads , and the composite material reinforced with graphite particles showed remarkable decreasing in temperature when surface temperatures were measured as compared with base alloy.

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