Abstract
Diffusion studies were performed in the Au–Ni system over the temperature range 750–900°C. Interdiffusion coefficients were obtained by evaluating the concentration profiles of the annealed Au/Ni couples with the Sauer–Freise analysis. Intrinsic diffusivities D Au and D Ni in various Au–Ni alloys, experimentally determined at 900°C by means of multi-foil couples, were compared with those predicted from the model of Darken–Manning with the aid of the thermodynamic and tracer diffusion data. The experimental values of D Ni were close to those predicted by the model, while the intrinsic diffusivities of gold in the Au-rich alloys appeared to be considerably higher than the computed values. The experimental results are consistent with the relatively high Kirkendall-marker velocity within the zone of interdiffusion observed in the Au/Ni couples.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
