Browsing by Author "Carter, P"

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    Interdiffusion in the face-centred cubic phase of the Ni–Re, Ni–Ta and Ni–W systems between 900 and 1300 C
    (Elsevier, 2000-04-15) Karunaratne, M. S. A; Carter, P; Reed, R. C
    In order to deduce the temperature and composition dependence of the interdiffusion coefficient in the nickel-rich end of the Ni–Re, Ni–Ta and Ni–W systems, a number of diffusion couples have been fabricated and heat treated at temperatures between 900°C and 1300°C. The concentration profiles so-obtained have been determined using an electron microprobe. Subsequently, values of the interdiffusion coefficients were determined using a modified form of the Boltzmann–Matano analysis, and these are presented. Only a very weak concentration dependence of the interdiffusion coefficients was found. The results are compared with the very limited data which are available in the literature.