Influence of graphite on concentration of carbon vacancies in ball-milled TiCx

In this work, the influence of graphite on the ball-milled TiC, was studied. The results show that the lattice parameter of TiC, is increased when TiC, particles are ball-milled with graphite, which indicates a decrease in the concentration of carbon vacancies in the TIC,. It is considered that this decrease in the concentration of carbon vacancies results from the diffusion of carbon atoms from graphite into the TiCx. When the TiCx is ball-milled with more graphite, the effectiveness of the ball-milling is better, and the diffusion process of carbon becomes much easier. Furthermore, besides diffusion into the TiCx, some graphite has transformed into amorphous carbon after the ball-milling.