Effect of Indium Addition on Physical and Mechanical Properties of Al-Sb Alloys Rapidly Solidified from Melt

Aluminum antimony indium (AlSbIn) with a face-centered Cubic type structure is a promising semiconductor alloy. In this work, Al90-X-Sbx-In10(where x= 10 and 20 wt %) alloys were prepared by melt-spinning technique. The influence of Indium co replacement on the structure, microstructure, tensile stress, conductivity, Vickers hardness and activation energy of Al90-Sb10and Al80-Sb20were investigated by the X-ray diffraction (XRD), the scanning electron microscopy (SEM), the tensile test machine (TS), the electrical resistivity, the microhardness technique and the differential scanning calorimetry (DSC). The mechanical measurement shows that the Yield strength of the Al80-Sb10-In10and Al70-Sb20-In10modified alloy in sequence decreased 28% and 9% relative to the unmodified alloy and the change in hardness occurs that is credited to changes in themicrostructure. The results reveal that the InSb-containing alloys have better transport properties with inferior scattering time (relaxation time) due to short of the electron mean free path and intermetallic compounds AlSb with InSb particle hardening. We are suggesting the practicability of using Al70-Sb20-In10in designing a junction useable in the multijunction solar cell.