Interdiffusion in the face-centred cubic phase of the Ni–Re, Ni–Ta and Ni

Karunaratne, M. S. ACarter, PReed, R. C2021-10-242021-10-242000-04-152590921-5093https://rda.sliit.lk/handle/123456789/205In 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.enSuperalloysInterdiffusion coefficientsNi–Re, Ni–Ta, Ni–Wface-centredcubic phaseInterdiffusion in the face-centred cubic phase of the Ni–Re, Ni–Ta and Ni–W systems between 900 and 1300 CArticlehttps://doi.org/10.1016/S0921-5093(99)00705-4