Preparation and Property of MXene/Copper Alloy Composites

doi:10.15541/jim20170297

Abstract

Abstract:

Cu/Ti₃C₂T_x composites with Ti₃C₂T_x content of 5vol%, 10vol% and 20vol% were prepared by using a molecular-level mixing process and spark plasma sintering (SPS). Influence of Ti₃C₂T_x content on electrical, mechanical and tribological properties was investigated. The result showed that relative density and electrical conductivity of Cu/Ti₃C₂T_x composites gradually decreased with the Ti₃C₂T_x content increase, while the tensile strength of Cu/Ti₃C₂T_x composites increased at first and then decreased. When the Ti₃C₂T_x content was 5vol%, the tensile strength of Cu/ Ti₃C₂T_x composites increased by 43% than that of pure copper. Tribological properties of Cu/ Ti₃C₂T_x composites were enhanced by the addition of Ti₃C₂T_x. When the Ti₃C₂T_x content was 10vol%, the wear rate of Cu/ Ti₃C₂T_x composites was 2.55×10^-7 mm³/(N·m), which was one magnitude lower than that of pure copper.

Key words: Ti₃C₂T_x, copper matrix composites, electrical conductivity, friction and wear

CLC Number:

TB333

SI Xiao-Yang, CHEN Fan-Yan, DENG Qi-Huang, DU Shi-Yu, HUANG Qing. Preparation and Property of MXene/Copper Alloy Composites[J]. Journal of Inorganic Materials, 2018, 33(6): 603-608.

Figures/Tables 9

Fig. 1 XRD pattern (a) and SEM image (b) of Ti3C2Tx

Fig. 2 XRD patterns of Cu/Ti3C2Tx bulk composites(a) Cu/5vol% Ti3C2Tx; (b) Cu/10vol% Ti3C2Tx; (c) Cu/20vol% Ti3C2Tx

Fig. 3 SEM images of Cu/Ti3C2Tx composites(a, d) Cu/5vol% Ti3C2Tx; (b, e) Cu/10vol% Ti3C2Tx; (c, f) Cu/20vol% Ti3C2Tx

Fig. 4 Electrical conductivity and relative density of Cu/Ti3C2Tx composites as a function of Ti3C2Tx content

Fig. 5 Stress-strain curves of Cu/Ti3C2Tx composites

Table 1 Width of wear tracks and wear rates of Cu/Ti3C2Tx composites

Sample ID	Wear rate/(mm³·N^-1·m^-1)
Pure copper	3.79×10^-6
5vol% Ti₃C₂T_x	2.25×10^-6
10vol% Ti₃C₂T_x	2.55×10^-7
20vol% Ti₃C₂T_x	4.98×10^-6

Fig. 6 Change of friction coefficients for Cu/Ti3C2Tx composites with sliding time

Fig. 7 SEM images of the wear tracks of Cu/Ti3C2Tx composites(a) Cu; (b) Cu/5vol% Ti3C2Tx; (c) Cu/10vol% Ti3C2Tx; (d) Cu/20vol% Ti3C2Tx

Fig. 8 Raman spectra of Cu/20vol% Ti3C2Tx composites at the wear track

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