Abstract
The grain boundary diffusivity of Au in Cu and Cu-Bi, and Cu in Ni and Ni-Bi are characterized by secondary ion mass spectroscopy depth profiling. Samples are equilibrated in a Bi containing atmosphere at temperatures above and below the onset of grain boundary adsorption transitions, sometimes called complexion transitions. A simple thermo-kinetic model is used to estimate the relative entropic contributions to the grain boundary energies. The results indicate that the entropy term plays a major role in promoting thermally and chemically induced grain boundary complexion transition.
Original language | English (US) |
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Article number | 193507 |
Journal | Journal of Applied Physics |
Volume | 113 |
Issue number | 19 |
DOIs | |
State | Published - May 21 2013 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy