Generalized Gibbs-Thomson equation for nanoparticles at grain boundaries. (1st May 2017)

• Record Type: Journal Article
• Authors: Lin, M.; Gottstein, G.; Shvindlerman, L.S.
• Is Part Of: Acta materialia. Volume 129(2017)
• Page Start: 361
• Page End: 365
• Publication Date: 2017-05-01
• Subjects: Gibbs-Thomson relation -- Triple junction -- Grain boundary -- Precipitation; Materials -- Periodicals; Materials science -- Periodicals; Materials -- Mechanical properties -- Periodicals; Metallurgy -- Periodicals; Chemistry, Inorganic -- Periodicals; 620.112
• DOI: 10.1016/j.actamat.2017.03.007
• Languages: English
• ISSNs: 1359-6454

Abstract

Abstract: A general Gibbs-Thomson equation is derived from the complete free energy description of precipitates at grain boundaries, taking into account the excess free energy of the grain boundary – phase boundary junction. In this model, the equilibrium shape of particles shows a strong dependency on the particle size, which gives rise to a deviation from the classical theory of precipitation. The influence of the line tension of triple junctions on the nucleation energy barrier is discussed. Graphical abstract: Image