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Mohammad Reza Akbarpour

Mohammad Reza Akbarpour

Academic rank: Professor
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Education: PhD.
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Faculty: 1
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Research

Title
Mechanical, tribological and electrical properties of Cu-CNT composites fabricated by flake powder metallurgy method
Type
JournalPaper
Keywords
Metal matrix compositesCarbon nanotubeFlake powder metallurgyWearElectrical conductivity
Year
2019
Journal Archives of Civil and Mechanical Engineering
DOI
Researchers Mohammad Reza Akbarpour ، ، ، Hyoung Seop Kim

Abstract

Cu-CNT composites were fabricated by a flake powder metallurgy method, and their microhardness, electrical conductivity, frictional and wear properties were investigated. Homogenous distribution of CNTs in fine-grained Cu matrix was obtained using this process. Microhardness increased with the addition of CNT vol% up to 8% to the Cu matrix, while the conductivity decreased to 79.2 IACS %. Results showed that CNTs play a major role in improving wear resistance by forming a CNT-rich film that acts as a solid lubricant layer. In the synthesized composites, Cu- 4 vol% CNT composite exhibited the best wear and friction properties. The dominant wear mechanisms for the Cu-CNT composites were plastic deformation, abrasion, and flake formation-spalling. Also, a newly modified correlation was proposed for the theoretical calculation of the friction coefficient of Cu-CNT composites consisting agglomerated CNTs.