An analysis of heat and mass transfer and ribbon formation by rapid quenching from the melt

Abstract

Abstract The process of ribbon formation by the single-roller technique and by rapid quenching from the melt has been studied with the aid of the boundary layer theory. An easy calculation method has been proposed for the solution of heat and mass transfer equations for the case in which the melt is rapidly quenched onto a substrate. The proposed method takes into account the viscosity change due to the temperature reduction and the heat resistance on the substrate surface. The thicknesses of the ribbon calculated with the aid of the proposed method show good correlation with the experimental results.