Preparation and property of mxene/copper alloy composites

Abstract

Cu/Ti3C2Tx composites with Ti3C2Tx content of 5vol%, 10vol% and 20vol% were prepared by using a molecular-level mixing process and spark plasma sintering (SPS). Influence of Ti3C2Tx content on electrical, mechanical and tribological properties was investigated. The result showed that relative density and electrical conductivity of Cu/Ti3C2Tx composites gradually decreased with the Ti3C2Tx content increase, while the tensile strength of Cu/Ti3C2Tx composites increased at first and then decreased. When the Ti3C2Tx content was 5vol%, the tensile strength of Cu/ Ti3C2Tx composites increased by 43% than that of pure copper. Tribological properties of Cu/ Ti3C2Tx composites were enhanced by the addition of Ti3C2Tx. When the Ti3C2Tx content was 10vol%, the wear rate of Cu/ Ti3C2Tx composites was 2.55×10-7 mm3/(N·m), which was one magnitude lower than that of pure copper.