Abstract
Phase relation of the Cd-Zn system at various pressures up to 7.0 GPa was determined by means of isobaric measurement of electrical resistance and in-situ X-ray diffraction analysis. The eutectic temperature and melting temperatures of cadmium and zinc increase under pressure with mean values of the slopes (ΔT/ΔP)(P=0-7 GPa) of 26°C/CPa, 48°C/GPa and 38°C/GPa, respectively. The eutectic composition moves toward Zn-rich phase from 26.6 at% Zn at atmospheric pressure to 58 at% Zn at 6.0 GPa. The maximum solubility of zinc in the α phase (hcp solid solution on the Cd-rich side) and that of cadmium in the β phase (hcp solid solution on the Zn-rich side) expand slightly under high pressure. Isobaric temperature-composition sections of the three-dimensional equilibrium phase diagram of the Cd-Zn system up to 7.0 GPa are constructed on the bagis or the results.
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