Hardness and wear resistance of carbon nanotube reinforced Cu matrix nanocomposites

Nanocontact Characteristics of Composite Galvanic Chrome Coatings Detected by Sclerometry and Atomic Force Microscopy

“…It is known that the degree of uniformity of the CNT distribution in a metal matrix is one of the key factors that affect the resulting physicalmechanical properties of the composite [10]. The formation of a chemical bond between the nanotube and the matrix made it possible to achieve an increase in the compressive yield strength and a decrease in wear resistance by a factor of three, as well as a Vickers hardness growth up to 2 times for Cu-10 % (bulk) CNT composites made by spark plasma sintering [12,13]. However, to date, the nanocontact physicalmechanical properties of composite materials containing CNTs, including electrolytic coatings, have not been adequately studied.…”

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

“…Most of the studies using SPS have been carried out in Cu-CNT [19,[66][67][68] and Al-CNT system [31]. Kim et al [66] were the first to report SPS of Cu-CNT composites fabricated at 1023K at 40 MPa with better dispersion and improved density (97-98.5%).…”

“…Several researchers have adopted novel approaches for enhancement of dispersion and bonding in MM-CNT composites. Molecular level mixing is one such method which has been mostly used for Cu-CNT Composites [19,68,[137][138][139], except one that deals with Sb and SnSb 0.5 matrix composites [140]. This method is capable of producing composite particles or one dimensional nanostructure of CNT coated with metal.…”

“…In this process, a CNT metal suspension is subjected to drying, calcination and reduction process, in series, to produce metal-CNT composite powder [19]. These nanocomposite powders are then used for bulk processing through powder metallurgy route [19,68,138,139]. The aim is to obtain good dispersion and better bonding of CNTs with matrix in the final composite structure.…”

“…Ti-CNT [28] Mg-CNT [73] Fe 3 Al-CNT [74] Ti-BMG-CNT [75,76] 450% increase in hardness and 65% increase in elastic modulus in Ti-CNT [28] 9% increase in elastic modulus in Mg2wt.% CNT [73] Increased thermal stability and hardness (30%) in Ti-BMG-10wt.% CNT [75] Powder Metallurgy Spark plasma sintering (SPS) SPS of powders prepared by Mechanical alloying/novel dispersion methods Cu-CNT [19,[66][67][68] Al-CNT [31] 129% increase in tensile strength in Al5vol.% CNT [31] 200% increase in yield strength and 70% increase in elastic modulus of SPS of molecular level mixed Cu-5vol.% CNT [19] Deformation Processing…”