Abstract
Reaction-diffusion experiments of aluminium and silver have been done under high pressure up to 3 GPa at temperatures between 729 K and 873 K. The eutectic reaction temperature of 839 K rises with increasing pressure. The solubility of silver in aluminium decreases with pressure, but the concentration of ζ phase at the interface between ζ and α phases is independent of pressure. The excess enthalpy of mixing for α solid solution increases with pressure.
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