Properties of aluminium alloy AK9 with alkaline earth metals

The objective of the work is to identify the dependence of heat capacity and changes in thermodynamic functions on temperature, to study the features of oxidation and anode properties of AK9 alloy modified with alkaline-earth metals, to develop new composite alloys based on this improved characteristics. By means of cooling mode the temperature dependence of heat capacity, the heat transfer coefficient, and the change of thermodynamic functions (enthalpy, entropy, Gibbs energy) of AK9 alloy modified with alkaline earth metals have been studied. The studies have shown that with temperature increasing the specific heat, the enthalpy and entropy of alloys increase, and the value of Gibbs energy decreases. The heat capacity of alloys at temperature 600 K at transition from alloys with calcium to alloys with strontium increases, then to alloys with barium decrease. The enthalpy and entropy of alloys at transition from alloys with calcium to alloys with strontium increase and to alloys with barium decrease. The value of the Gibbs energy is inversely related.