Abstract
The self-diffusion coefficients of carbon-14 in TiC have been measured as a function of composition in the temperature range 1450° to 2280°C, and can be represented by the expressions: D*0.970=6.98±1.24 exp (−95 300±700/RT) and D*0.887=45.44±5.12 exp (−106 800±400/RT) cm2/sec. The effect of composition on the self-diffusion coefficients is discussed and the tracer coefficients are compared with apparent diffusion coefficients calculated from steady-state creep measurements and the kinetics of TiC compound formation.

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