In:
International Journal of Materials Research, Walter de Gruyter GmbH, Vol. 96, No. 10 ( 2022-02-03), p. 1181-1186
Abstract:
Non-linear segregation of Ag in Cu grain boundaries (GB) was quantitatively studied by radiotracer GB diffusion measurements on Cu bicrystals with non-special near Σ5 symmetrical [001] tilt boundaries. Bicrystals were used to guarantee a stable GB during the annealing avoiding in this way disturbing effects like GB motion etc. on the measured diffusion penetration profile. The 110m Ag radioisotope with a well-defined specific activity was applied. This allowed to determine quantitatively the amount of Ag solute atoms in a section as a function of the penetration depth. The controlled variation of the total amount of diffusing Ag atoms along the Cu GB resulted in a fundamental change of the GB penetration profile shape from almost linear to strongly curved. The curvature of the penetration profiles was unambiguously shown to be caused by non-linear segregation of Ag in Cu GB. The full Ag segregation isotherm was calculated from the corresponding GB diffusion penetration profile.
Type of Medium:
Online Resource
ISSN:
2195-8556
,
1862-5282
DOI:
10.1515/ijmr-2005-0203
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
2022
detail.hit.zdb_id:
2232675-3
detail.hit.zdb_id:
2128058-7
detail.hit.zdb_id:
203021-4
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