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MM: Fachverband Metall- und Materialphysik

MM 37: Transport in Materials: Diffusion, Conduction of Charge or Heat IV

MM 37.3: Talk

Wednesday, March 20, 2024, 12:15–12:30, C 264

Grain boundary diffusion of 57Co in Cu SIGMA-5 (310) bicrystals — •Esakkiraja Neelamegan1, Daniel Gaertner1, Hui Ding2, Anoosheh Akbari1, Christian H Liebscher2, Gerhard Wilde1, and Sergiy V Divinski11Institute of Materials Physics, University of Münster, Münster, 48149 Germany — 2Structure and Nano- / Micromechanics of Materials, Max-Planck-Institut für Eisenforschung GmbH, Düsseldorf, Germany

Diffusion of 57Co in pure copper SIGMA-5(310)[001] bicrystals is investigated using the radiotracer technique. The measurements are performed both in type B (> 950 K) and type C (< 850 K) kinetics regimes after Harrison classification. The tracer diffusion experiments are conducted by varying the amount of the applied 57Co tracer solution, and the characteristic changes in the shape of the penetration profiles are related to the Co segregation-induced changes of the grain boundary structure.

Keywords: Grain boundary Diffusion; Cu Bicrystals

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