A diffuse-interface model of reactive wetting with intermetallic formation is developed that incorporates fluid flow, phase change, and solute diffusion. The model is based on the total molar Gibbs energy of a ternary system with four phases. Numerical simulations were performed using a mesh-adaptive finite element method and revealed the complex behavior of the reactive wetting process. Model verification against equilibrium states and classical thermodynamics were also done. Results are shown where the nucleation and growth of the intermetallic phase are directly influence by its kinetic coefficient and the interface energy associated with it. Furthermore, we found that the dynamics of the spreading liquid is independent of the nucleation and growth of the intermetallic phase in the early stage of reactive wetting.
Citation: Acta Materialia
Pub Type: Journals
Reactive Wetting, Navier-Stokes Flow, Multicomponent and Multiphase Model, Phase-field Method, Intermetallic Formation