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Diffusion Mechanism in F.C.C. Metals
Author(s) -
Mundy J. N.
Publication year - 1987
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221440121
Subject(s) - arrhenius plot , arrhenius equation , diffusion , curvature , thermodynamics , diffusion process , jump , activation energy , jump diffusion , aluminium , materials science , chemistry , metallurgy , physics , mathematics , geometry , innovation diffusion , knowledge management , quantum mechanics , computer science
Curvature in the Arrhenius plot of self‐diffusion in metals is commonly interpreted as resulting from a monovacancy jump process at low temperatures with an increasing contribution from a divacancy jump process at higher temperatures. Recently it has been suggested that the Arrhenius curvature in b.c.c. metals could be attributed to monovacancies with temperature‐dependent activation enthalpies. The grounds why the same model could not be applied to f.c.c. metals are examined with particular emphasis on the diffusion and defect properties of aluminum.