Time dependent interface stability during rapid solidification

Abstract

Erratum: "The structure of the liquid-vapor interface of a gallium-tin binary alloy" [J.The destabilization of a planar solid/liquid interface during resolidification of the molten surface layer of Si-Sn alloys is investigated. Experimental data are compared with the results of a transient numerical stability analysis. In that analysis the time evolution of an infinitesimal sinusoidal perturbation of a planar interface is investigated. For this the concentration profile in the melt as well as the temperature distributions in the melt and solid are divided into a base state and a state due to the perturbation. The highly nonuniform Sn profiles implanted in ͑100͒ silicon samples serve as initial conditions for the numerical calculations. Deviations from thermal equilibrium at the solid/ liquid interface are considered. The critical concentration for breakdown is calculated as a function of solidification velocity and compared with the results of the analytical analysis of Huntley and Davis ͓Acta Metall. Mater. 41, 2025 ͑1993͔͒. It is further investigated whether an analytical steady-state stability analysis can be used to approximately describe the experiments considered.

Dendritic and eutectic growth in Sb60Ag20Cu20 ternary alloy

“…The cooperative growth of θ and ε phases contributes to the formation of (ε + θ ) pseudobinary eutectic easily. In addition, the crystallization route has been determined via microstructural characteristic analysis and DSC experiment.high undercooling, ternary eutectic, crystal nucleation, dendrite growth Rapid crystal growth at high undercooling is a liquid/solid phase transition process deviating far from the equilibrium situation, which has been investigated widely to develop metal solidification mechanism and prepare novel metal materials [1][2][3][4][5] . It has been achieved by means of various containerless techniques, such as glass fluxing technique, drop tube technique and various kinds of levitation techniques [6][7][8] .…”