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Technical Faculty Bor, University of Belgrade , Belgrade , Serbia
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Technical Faculty Bor, University of Belgrade , Belgrade , Serbia
Technical Faculty Bor, University of Belgrade , Belgrade , Serbia
Technical Faculty Bor, University of Belgrade , Belgrade , Serbia
Technical Faculty Bor, University of Belgrade , Belgrade , Serbia
Measuring Transformers Factory Zaječar , Zaječar , Serbia
Low-melting alloys, based on bismuth, indium, and tin, have found commercial use in soldering,
safety devices, coatings, and bonding applications, due to their low melting point temperature of
eutectic compositions and small differences between their liquidus and solidus temperatures.
Based on this, the accurate knowledge of their thermal properties such as melting and
solidification temperatures, latent heat of melting, supercooling tendency, etc. is of immense
importance. In the present research, low-melting alloy from three cross-sections Bi-Sn50In50,
Sn-In50Bi50, and In-Bi50Sn50 (wt.%) was investigated using differential thermal analysis (DTA),
and by scanning electron microscopy (SEM) with energy dispersive spectrometry (EDS).
Temperatures of phase transformations, determined by DTA, and phase compositions of coexisting
phases, determined by EDS analysis, were found to support the corresponding calculated
phase compositions quite well. The experimentally obtained results were compared with the
results of thermodynamic calculation according to the CALPHAD approach, and a close
agreement was noticed.
This work has been financial supported by the Ministry of Science, Technological Development and Innovations of the Republic of Serbia, with the funding of the scientific research work at the University of Belgrade, Technical Faculty in Bor, according to the contract with registration number 451-03-47/2023-01/200131. The authors are grateful to V.T. Witusiewicz for kindly providing TDB file for thermodynamic calculations.
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