Analysis of mean square penetration depth in grain boundary diffusion

Analysis of mean square penetration depth in grain boundary diffusion

Exact and approximate expressions for mean square penetration depth (MSPD) in grain boundary diffusion are derived. The MSPDs in boundary diffusion are functionally different from those in lattice diffusion. The quantitative results obtained provide more reliable estimates for the penetration depth...

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Veröffentlicht in:Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science Physical Metallurgy and Materials Science, 1996-11, Vol.27 (11), p.3473-3477
Hauptverfasser: CHOU, Y. T, LI, Y. Z, LIU, C. T
Format: Artikel
Sprache:eng
Schlagworte:
ABUNDANCE
BOUNDARY CONDITIONS
Chemical interdiffusion
diffusion barriers
Condensed matter: structure, mechanical and thermal properties
DIFFUSION
Diffusion in solids
Exact sciences and technology
GRAIN BOUNDARIES
MATERIALS SCIENCE
Physics
POLYCRYSTALS
PREDICTION EQUATIONS
STATISTICAL MODELS
TIME DEPENDENCE
Transport properties of condensed matter (nonelectronic)
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Zusammenfassung:Exact and approximate expressions for mean square penetration depth (MSPD) in grain boundary diffusion are derived. The MSPDs in boundary diffusion are functionally different from those in lattice diffusion. The quantitative results obtained provide more reliable estimates for the penetration depth of a diffusant in polycrystalline materials, thin films, and bicrystals. Data are presented for Ag/Ag and Cr/Nb diffusion couples.
ISSN:1073-5623
1543-1940
DOI:10.1007/BF02595439