Quantifying metallurgical interactions in solid/liquid diffusion couples using differential scanning calorimetry

A novel method using differential scanning calorimetry (DSC) has been developed to quantify the interface kinetics in a solid/liquid diffusion couple. The Ag–Cu binary eutectic system is investigated by heating an assembly of Ag base metal and Ag–Cu eutectic foil to 800 °C and holding. The fraction of liquid remaining after various isothermal hold periods is measured by comparing the melting endotherms with the solidification exotherms. …