Abstract：Using multi-walled carbon nanotubes (CNTs) and Cu-plated carbon nanotubes (Cu@CNTs) as the reinforcing phase, the Ag-based composites were prepared by hot pressing method. The effects of CNTs surface modification on mechanical properties, friction properties and wear properties were studied. The results show that the CNTs clusters in the Ag-2Cu@CNTs (volume fraction) composite decrease, and a structure of from Ag to Cu and then to CNTs is formed from the inside to the outside. The mechanical properties of that composite are excellent, the hardness (HV) reaches 105.6, and the tensile strength reaches 248.5 MPa, which is 30.05% and 127.98% higher than pure silver respectively. Compared with pure silver, the friction and wear performance of the Ag-2Cu@CNTs composite is significantly improved, the average friction factor is reduced from 0.86 to 0.28 compared with pure silver, and the volume wear rate is reduced from 88.54×10-4 mm3/(N·m) to 3.96×10-4 mm3/(N·m).
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2021, Vol. 26 
