Dispersion of Carbon Nanotubes in Cu-Cr Matrix Nano-composite by Wet Milling

摘要

The preparation of Cu-2wt%Cr-5wt%CNT nano-composite powder by wet ball milling was investigated. The lattice parameter and mean crystallite size were calculated by X-ray diffraction technique. Also, the microstructure was characterized by field emission scanning electron microscopy and transmission electron microscopy. The results showed that, the CNTs were dispersed more homogeneously by wet milling and minimum damages were introduced on them. The mechanical properties of powders were investigated by microhardness test and the results were consistent with microstructural results. The mean crystallite size of wet milled powders was 46 nm.