Determination of cadmium rich corner of Cd–Cu–Zn,Cd–Cu–Mg,and Cd–Cu–Pb phase diagrams

Abstract

The liquidus temperatures along the monovariant trough running from the Cd–Cu–Cd₃ eutectic in each of the systems Cd–Cu–Zn, Cd–Cu–Mg, and Cd–Cu–Pb were determined using thermal and microstructural analyses. The solidus temperatures in the Cd–Cu–Mg system were also determined using thermal analysis. Alloys of monovariant composition in the Cd–Cu–Zn and Cd–Cu–Mg systems were found to have higher liquidus temperatures than the binary eutectic, indicating that the monovariant trough in these systems slopes down towards the binary eutectic. In the Cd–Cu–Pb system the liquidus temperatures along the monovariant were found to be lower than that of the binary eutectic. For the Cd–Cu–Zn system the present results are at variance with an earlier investigation.

MST/579