Kinetics and thermodynamics associated with Bi adsorption transitions at Cu and Ni grain boundaries

Kaiping Tai, Lin Feng, Shen J. Dillon

Research output: Contribution to journalArticlepeer-review

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 languageEnglish (US)
Article number193507
JournalJournal of Applied Physics
Volume113
Issue number19
DOIs
StatePublished - May 21 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Kinetics and thermodynamics associated with Bi adsorption transitions at Cu and Ni grain boundaries'. Together they form a unique fingerprint.

Cite this