Thermophysical properties and changes in thermodynamic functions of aluminum conductive alloy AlTi0.1 modified with cerium

Aluminum is one of the most sought-after metals in the world, and this is no surprise. It is lightweight, ductile, non-magnetizable, and relatively inexpensive. At the same time, it has sufficient strength and good electrical conductivity, making it indispensable in electrical engineering and electronics. In our study, we examined the heat capacity of the AlTi0.1 conductive alloy (aluminum with 0.1% titanium added) doped with cerium. Measurements were taken during cooling, and a standard  ultra-pure aluminum grade A5N (99.999%)  was used for comparison. We calculated the cooling rates of both the alloy and the standard, and then plotted the heat capacity versus temperature. Further analysis allowed us to determine how the enthalpy, entropy, and Gibbs free energy change at different temperatures and cerium concentrations. It turned out that with increasing cerium content, heat capacity, enthalpy, and entropy decrease, but increase with increasing temperature. Gibbs free energy behaves in the opposite way, showing an inverse relationship.