Friction and Wear Properties of Copper Matrix Composites with CNTs/Cu Composite Foams as Reinforcing Skeletons

Interfacial Bonding Improvement through Nickel Decoration on Carbon Nanotubes in Carbon Nanotubes/Cu Composite Foams Reinforced Copper Matrix Composites

“…SPS uses uniaxial pressure and pulses a direct current to heat and sinter the samples. During the SPS sintering process, the conductivity changes of the samples and the different pressure distributions of the copper powder will affect both the sintered neck growth and copper’s grain growth [ 18 ]. The increased hardness of the skeleton area can be attributed to the changes in its interface microstructure and surface coating, which provide stronger interfacial bonding to facilitate load transfer [ 29 ].…”

“…In our previous work, we have designed and prepared a copper matrix composite reinforced by CNTs/Cu composite foams, which act as three-dimensional skeletons to enhance the composite strength and tribological properties, and the pure copper phase continuously filling in the foam holes allows the composite to maintain good ductility and conductivity [ 17 , 18 ]. However, problems of poor wettability and interfacial compatibility exist between CNTs and Cu; these problems are believed to be other key factors limiting the performance of CNTs/Cu composites [ 19 , 20 ].…”