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Microstructure and thermal analysis of the low melting Bi–In eutectic alloys

Microstructure and thermal properties of the low melting Bi–In eutectic alloys were investigated in this work. Three eutectic alloys (Bi–47.44 at.% In, Bi–66.33 at.% In, Bi– 77.92 at.% In) were prepared by induction melting of pure elements. Microstructure of the alloys was analyzed using scanning electron microscopy (SEM) with energy dispersive X-ray spectrometry (EDS) and identification of co- existing phases was done. Differential scanning calorimetry (DSC) was applied for determination of melting temperatures and latent heats of eutectic melting. Experimentally obtained results were compared with the results of thermodynamic calculation according to CALPHAD (calculation of phase diagram) method and good mutual agreement was observed.

Bi–In system ; eutectic alloy ; latent heat of melting ; microstructure

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