Nano-ceramics Bicarbide Ti₃SiC₂ Max Phase Reinforced Single Walled Carbon Nanotubes by Spark Plasma Sintering

摘要

Ceramics titanium silicon carbide Ti₃SiC₂ Max phase was rapidly synthesised and simultaneously consolidated by spark plasma sintering at which the extensive volume expansion occurred as a function of the temperature from ball milled SiC/Ti/C powders with Ti/SiC ratio of 3:1:2. The XRD patterns results were confirmed by FESEM observations and the EDAX analyses. The reinforced and unreinforced 3Ti+1.2SiC+0.8C, 3Ti+1.2SiC+0.8C/SWCNTs powders were processed by using spark plasma sintering (SPS) at temperatures of 1100, 1200 and 1300℃ with diting of SWCNTs from 0.0 to 1.0 wt% SWCNTs/Ti₃SiC₂ nanocomposite. The effects of SWCNTs addition on phases, microstructure and hardness of the nanocomposite were investigated. The best product contained 1.0 wt% CNTs/ Ti₃SiC₂/TiC which was sintered at 1300℃, 60 MPa for 10 min The phase composition of the product could be tailored by adjusting the process parameters. The anisotropic hardness was observed in respect to the textured product.