A couple technique was used to measure the chemical diffusivity of C in TiC1-x as a function of stoichiometry, and temperatures ranging from 1000 to 1600C. Marker methods indicated that C was essentially the only component which diffused. Analyses were carried out by means of electron probe techniques. It was found that the C diffusivity was a function of the C concentration, and could be described by the expression:

D (cm2/s) = (0.48exp[9.2x])exp[-39500/T]

F.J.J.Van Loo, G.F.Bastin: Metallurgical Transactions, 1989, 20A[3], 403-11