Pressure Effects on the Eutectic Temperature of the Sn-Zn, Sn-Pb, Sn-Bi and Cd-Zn Systems

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Abstract
The pressure dependences of the eutectic temperature in systems Cd-Zn, Sn-Zn, Sn-Pb and Sn-Bi are investigated up to 35 kbars. In the system Cd-Zn, Sn-Zn and Sn-Pb it shows monotonous increase with pressure. But in the system Sn-Pb the simple eutectic relation vanishes. In the system Sn-Bi it shows a minimum. The melting curves of Cd, Zn, Sn, Pb and Bi are also determined up to 35 kbars. These results are compared with those of Kennedy and Butuzov. The observed and calculated initial slopes of the pure metals and the eutectic mixtures are discussed on the basis of the thermodynamic representation of the pure and binary system. The agreement of both is good. Especially it is noticeable that the pressure effect on the eutectic temperature is smaller than that in the pure end members.

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