The diffusion of carbon in single and polycrystalline ZrC was measured at 1350 to 2150C, using radioactive tracer techniques. Volume and short-circuit enhanced tracer diffusion coefficients were represented by:

D(cm2/s) = 1.32 x 10 2 exp[-113200/RT]

and

D(cm2/s) = 1.6 exp[-90000/RT]

respectively.

S.Sarian, J.M.Criscione: Journal of Applied Physics, 1967, 38[4], 1794-8