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Original Articles

Improvement on Sliding Wear Behavior of Al/Cast Iron Tribopair by CNT's Reinforcement of an Al Alloy

, , , &
Pages 643-653 | Received 10 Jul 2014, Accepted 20 Dec 2014, Published online: 01 May 2015
 

Abstract

The results presented in this work show the wear characterization of Al-Si matrix composites reinforced by multiwall carbon nanotubes (MWCNTs) under dry reciprocating sliding conditions against a grey cast iron (GCI) The wear resistance is investigated as a function of the carbon nanotube (CNT) content that varied from 2 to 6 wt%. The results demonstrated that the CNT content plays a relevant role in the wear behavior by substantially reducing the wear loss of Al-Si CNT composites. Further, it reduces the wear loss of the grey cast iron counterface. A physical model able to explain the improved behavior in both mating materials is depicted from experimental results.

Funding

This work was supported by the Portuguese Foundation of Science and Technology through the project references PTDC/EME-PME/68664/2006 and EXCL/EMS-TEC/0460/2012.

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