Abstract
A complex analysis of the selfdiffusion, interdiffusion and vaporization data in the Ni-V system is presented in this paper. Full descriptions of diffusion processes in this system were given. Temperature dependence of the selfdiffusion coefficients of components in the solid solution region fulfil the Arrhenius law. Concentration dependences of the selfdiffusion characteristics (D,D 0,ΔH) have the extremes in the region of 25 at. % of vanadium (minimum for logD=f(x), maximum for logD 0=f(x) andΔH=f(x)).
The results presented have proved the validity of the model of correlation between melting temperature and diffusion characteristics. The thermodynamic factorm was calculated on the base of mutual consistent results of selfdiffusion and interdiffusion measurements. Thermodynamic activities of nickel were computed by the integration of concentration dependence of the factorm and they exhibit negative deviations from ideal behaviour. The concentration dependence ofm reaches the maximum in the region of concentration 25 at. % V. Negative deviations from ideality for the nickel activity were confirmed by the method of simultaneous measurement of vaporization rate and diffusion coefficient.
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Million, B., Růžičková, J., Vřešťál, J. et al. Diffusion and thermodynamic properties of Ni-V system. Czech J Phys 30, 541–551 (1980). https://doi.org/10.1007/BF01596303
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DOI: https://doi.org/10.1007/BF01596303