Equilibrium segregation and interfacial energy in multicomponent systems

Journal Article · Wed May 01 00:00:00 EDT 1991 · Acta Metallurgica; (United States)

DOI:https://doi.org/10.1016/0956-7151(91)90277-8· OSTI ID:7280278

Dregia, S A ^[1]; Wynblatt, P ^[2]

---

1. Dept. of Materials Science and Engineering, Ohio State Univ., Columbus, OH (US)
2. Dept. of Metallurgical Engineering and Materials Science, Cargnegie-Mellon Univ., Pittsburgh, PA (US)

This paper reports on a model developed in the framework of gradient thermodynamics to study the equilibrium composition and energy of interphase boundaries in multicomponent systems. The parameters of the model are related to bulk properties for a nearest-neighbor, ternary regular solution. The model is applied to study the segregation of Au in interphase boundaries in the Cu-Ag-Au system, as a function of temperature, bulk composition, and interface orientation. Interfacial segregation is predicted and found to reduce interfacial energy in a manner consistent with the Gibbs adsorption equation.

• OSTI ID: 7280278
• Journal Information: Acta Metallurgica; (United States), Journal Name: Acta Metallurgica; (United States) Vol. 39:5; ISSN 0001-6160; ISSN AMETA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ADSORPTION
CHEMICAL COMPOSITION
COPPER
ELEMENTS
ENERGY
EQUILIBRIUM
FREE ENERGY
FREE ENTHALPY
GOLD
INTERFACES
MATHEMATICAL MODELS
METALS
PHYSICAL PROPERTIES
SEGREGATION
SILVER
SORPTION
SURFACE ENERGY
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES
THERMODYNAMICS
TRANSITION ELEMENTS