Consolidation of 1vol.% carbon nanotube reinforced metal matrix nanocomposites via equal channel angular pressing

High-temperature properties of extruded titanium composites fabricated from carbon nanotubes coated titanium powder by spark plasma sintering and hot extrusion

“…Recently, CNTs have been widely used as reinforcing materials for metal matrix composites (MMCs). The previous studies indicated the remarkable characteristics of MMCs reinforced with CNTs, such as aluminium [5][6][7], magnesium [8][9][10], copper [11][12] and titanium [13][14][15][16]. Ti and its alloys are also interested as competitive matrix materials because they exhibit high specific strength which is an important factor for weight reduction of the airplane and automotive applications from the viewpoint of energy consumption.…”

Plasma And Cold Sprayed Aluminum Carbon Nanotube Composites: Quantification Of Nanotube Distribution And Multi-Scale Mechanical Properties

“…On the other hand, it could also lead to total conversion of the CNTs and deterioration of mechanical properties of the CNT [36,37]. Several other processes like mechanical milling [22,28], HVOF [32,38] and equal channel angular pressing [39][40][41] could result in mechanical damage of the CNT structure. So it is necessary to assess processes based on the damage/changes they introduce in the CNTs.…”

“…However, the approach was mainly confined to Cu-CNT [41,71,[77][78][79][80] and Al-CNT [29,30,[81][82][83][84][85][86] composites. Kuzumaki et al [29] have synthesized Al-CNT composite through hot extrusion of powder compacts, at 873K.…”

“…Improvement in wear resistance and coefficient of friction was also observed in rolled samples [83]. Equal-channel angular processing (ECAP) was employed to successfully to synthesize Cu-CNT composites from powder compacts [41,78,79], with CNT content varying between 1-5 vol.%. ECAP, being a severe plastic deformation technique, is expected to induce high amount of deformation to the constituent phases, thus damaging the CNTs.…”

“…The percentage reduction in wear volume compared to Al-Si coatings is shown in the brackets Table 4.10: Variation of the Recovery parameters with CNT content of the coatings Table 4.11: Calculated values of the contact and true wear volumes for cold sprayed Al-CNT coating Table 4.12: Mechanical properties of bulk Al-Si-CNT composites in assprayed condition obtained from tensile test Table 4.13: Bulk mechanical properties of metal matrix CNT composites Table 4.14: Calculated and experimentally measured values of the mechanical properties of plasmas sprayed Al-Si-CNT composites [41], b) SEM image of the fracture surface of Al/CNT powder prepared by ball milling for 48 hours [37], c) SEM image of Al-5 wt.% CNT powder prepared by nanoscale dispersion method [43], and d) SEM image of CNTs grown on aluminum powder [29] [124], b) SiC layer in Al-23 wt.% Si composite containing 10wt% CNT [144], c) Al 4 C 3 in composites obtained by hot extrusion of spark plasma sintered samples [43], and d) Al4C3 formation in a mixture of CNT and 2024 alloy heated to 1000K in DSC [193] Fig …”