TY - JOUR
T1 - A commentary on "diffusion, mobility and their interrelation through free energy in binary metallic systems," L.S. Darken
T2 - Trans. AIME, 1948, vol. 175, p. 184ff
AU - Sridhar, Seetharaman
PY - 2010/3
Y1 - 2010/3
N2 - Dr. Darken presents his phenomenological analysis of diffusion on binary systems by using the recent experimental work by Smigelskas and Kirkendall that showed marker movement in the Cu-brass couple. He separated the diffusive flux from the flux associated with marker movements and established a Lagrangian reference frame from which both fluxes are observed. He developed two equations including v = (D2 D1)∂N2/∂x and D = N1D2 + N2D1. The first equation identifies individual diffusion coefficients for the two diffusing species and quantitatively links the marker movement to their difference and the concentration gradient at a given location. Another equation evolves from the first as the homogenization rate is dependent on the two diffusivities, which are linked through the marker movement. It identifies the chemical diffusion coefficient that is measured through the Bolzmann-Matano analysis.
AB - Dr. Darken presents his phenomenological analysis of diffusion on binary systems by using the recent experimental work by Smigelskas and Kirkendall that showed marker movement in the Cu-brass couple. He separated the diffusive flux from the flux associated with marker movements and established a Lagrangian reference frame from which both fluxes are observed. He developed two equations including v = (D2 D1)∂N2/∂x and D = N1D2 + N2D1. The first equation identifies individual diffusion coefficients for the two diffusing species and quantitatively links the marker movement to their difference and the concentration gradient at a given location. Another equation evolves from the first as the homogenization rate is dependent on the two diffusivities, which are linked through the marker movement. It identifies the chemical diffusion coefficient that is measured through the Bolzmann-Matano analysis.
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U2 - 10.1007/s11661-010-0177-7
DO - 10.1007/s11661-010-0177-7
M3 - Short survey
AN - SCOPUS:77949311445
SN - 1073-5623
VL - 41
SP - 543
EP - 562
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 3
ER -