Determination of the electrical and thermal properties of Al-Sn-Zn alloys

In the present work, the electrical resistivity, thermal conductivity and microstructure of the 70 at. % Al-15 at. % Sn-15 at. % Zn alloy have been investigated. The electrical resistivity of the alloy was obtained by four-point probe (DC 4PPT) method. Electrical resistivity measurements are used in conjunction with Wiedeman-Franz (W-F) law and Smith-Palmer (S-P) equations to obtain the thermal conductivity of the alloy. The microstructure parameters of the Al-Sn-Zn ternary alloy were obtained by XRD. The surface and phases of alloy were showed by SEM, MAPPING and the composition of each phase was determined by EDX.