Record details

    Evaluation of Molar Volume Effect for Calculation of Diffusion in Binary Systems
    Svojtka, Martin
    Vach, Marek
Publication type
    článek v odborném periodiku
Source title - serial
    Metallurgical and Materials Transactions B. Process Metallurgy and Materials Processing Science
    Roč. 43, č. 6
    s. 1446-1453
    Projekt: IAA3013006, GA AV ČR3cav_un_auth*0013051
    Rozsah: 8 s. : WWW
Subject category
    difussion profile
    molar efect
    regression function
Abstract (in english)
   This article relates the theoretical evaluation of the effect of a molar volume change in the diffusion profile of a binary system. This study is based on the regression fit of a diffusion profile using a selected function in an inverse form. For the calculation of concentration-dependent diffusivity according to the Sauer and Freise (and Wagner) treatment of the Boltzmann-Matano relation, this inverse regression function is further modified by the inclusion of molar volume, which is dependent on the molar composition of a diffusing two-component mixture. Following the conversion of the initial relation to the form that enables the direct integration of the used inverse function, which fits the diffusion profile, the formulas for the analytical calculation of diffusivity are obtained.
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
Import date
    19. 3. 2014