Chemical diffusion in bulk glass-forming Pd40Cu30Ni10P20 melts

Interdiffusion and self-diffusion of bulk metallic glass-forming Pd-Cu-Ni-P alloys have been investigated above the liquidus temperature at 993 K by the long-capillary method. Good agreement between the calculated partial mixing enthalpies and observed uphill-diffusion was found. The flow direction of uphill-diffusing elements is towards regions with the highest negative heat of mixing.