کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5102424 1480083 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Insight into interrelation between single-particle and collective diffusion in binary melts
ترجمه فارسی عنوان
نگاهی به رابطه بین انتشار تک ذره و جمعی در ذوب بیکاری
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
چکیده انگلیسی
The interrelation between the kinetics of single-particle (tracer) and collective diffusion in a binary melt is investigated theoretically within the framework of the Mori-Zwanzig formalism of statistical mechanics. An analytical expression for the Onsager coefficient for mass transport and two self-diffusion coefficients of species in a binary melt is derived using analysis based on the generalized Langevin equation. The derived expression naturally accounts for manifestation of microscopic (dynamic) cross-correlation effects in the kinetics of collective diffusion. Hence, it presents an explicit extension of the well-known Darken equation which is currently often used for expressing collective interdiffusion in terms of the two self-diffusion coefficients. An application of our analysis for interpretation of recent experimental data on the interrelation between the kinetics of single-particle and collective diffusion in Al-rich Ni-Al melts is demonstrated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 490, 15 January 2018, Pages 1446-1453
نویسندگان
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