Thermopysical properties and thermodynamic functions of aluminum conductive alloy E-AlMgSi (Aldrey) doped with indium

Aluminum and its alloys are widely used in electrical engineering as a conductor and structural material. As a conductor material, aluminum is characterized by high electrical and thermal conductivity (after copper, the highest level among all technically used metals). Aluminum is also characterized by low density, high corrosion resistance in atmospheric conditions, and high resistance to chemicals. Another advantage of aluminum is that it exhibits neutral behavior towards insulating materials such as oils, varnishes and thermoplastics, also at elevated temperatures. Aluminum is distinguished from other metals by its low magnetic susceptibility, as well as the formation of a non-conducting, easily removable powdery product (Al2O3) in an electric arc. At present, aluminum and its alloys in a number of areas successfully displace traditionally used metals and alloys. One of the promising areas for the use of aluminum is the electrical industry. Conductive aluminum alloys type E-AlMgSi (Aldrey) are representatives of this group of alloys. One of the promising areas for the use of aluminum is the electrical industry. Conducting aluminum alloys of the E-AlMgSi type (Aldrey) are representatives of this group of alloys. The paper presents the results of a study of the temperature dependence of heat capacity, heat transfer coefficient, and thermodynamic functions of an aluminum alloy E-AlMgSi (Aldrey) with gallium. Research conducted in the “cooling” mode. It is shown that with increasing temperature, the heat capacity, heat transfer coefficient, enthalpy and entropy of the E-AlMgSi (Aldrey) alloy with indium increase, and the Gibbs energy value decreases. The addition of indium up to 1 wt. % reduces the heat capacity, heat transfer coefficient, enthalpy and entropy of the original alloy and increases the value of the Gibbs energy.