Manufacturing and tribological properties of copper matrix/carbon nanotubes composites

Electrical and mechanical properties of Cu-CNT nanocomposites sintered by microwave technique

“…% CNT in both methods due to large-volume agglomeration of the CNT and the presence of pores [47,48] which could cause the bad effects on mechanical properties [49]. Nevertheless, compared with conventional sintering route, the hardness and bending strength of the samples produced by the microwave-assisted method are higher due to shorter sintering time and lower temperature, leading to the finer microstructure.…”

Friction and wear of copper–carbon nanofibers compact composites prepared by chemical vapor deposition

“…At the same time, in the last decade a number of studies has been devoted to copper-based composites in which graphite had been replaced by carbon nanostructures -nanotubes (CNTs) or fibers (CNFs) [7][8][9][10][11][12][13][14][15]. Owing to their great physic-mechanical properties carbon nanostructures are used as a reinforcing component in metal-based composites, even though a little amount of CNTs or CNFs is capable of enhancing the mechanical and electrical properties [7][8][9][10].…”

“…Owing to their great physic-mechanical properties carbon nanostructures are used as a reinforcing component in metal-based composites, even though a little amount of CNTs or CNFs is capable of enhancing the mechanical and electrical properties [7][8][9][10]. As the wear resistance is largely affected by the mechanical properties of the matrix materials, an increase in the hardness provided by the CNT reinforcement increases the composite wear resistance [7].…”

“…Similar to graphite containing composites the homogeneity of the CNT distribution along with good interfacial bonding are key points for microhardness improvement, reduction of the friction coefficient and wear loss [7]. To meet these demands the carbon nanostructures were coated with Ni [8,9] or Cu [10]; in [11] a multistep molecular-levelmixing process was proposed resulting in a 76.9% decrease in wear loss. Nasibulin et al [12] have reported an effective way of the synthesis of a copper-CNFs composite powder, in which the carbon nanostructures were grown up by the means of chemical vapor deposition (CVD) directly on the surface of the copper particles.…”

Carbon nanotubes–reinforced copper matrix composites produced by melt stirring

“…In contrast, the friction coefficient and the wear loss start to decrease significantly by addition of MWNTs with a minimum at about 15 vol% MWNTs. 5,6 With densities of 1.8 g cm 23 for MWNTs and 8.9 g cm 23 for copper, 5 vol% and 16 vol% correspond to 1 wt% and 3 wt%, respectively. However, in literature, no information can be found on producing Cu matrix/CNT composites via a melt stirring route.…”