ESTABLISHMENT OF REGULARITY OF CHANGES IN CHEMICAL CHARACTERISTICS OF INTERMETALLIDES OF ALUMINUM SYSTEMS - LANTANIDES OF COMPOUNDS Al11Ln3, β-Al11Ln3 AND Al3Ln

Ensuring the effective development of industries based on natural resources, taking into account the necessary qualitative scientific  justification, balancing the reasonable level of scientific and  technological progress, is justified by the creation of new materials  with specified characteristics. For this, fundamental studies of the  physico-chemical and thermodynamic properties of various systems, in particular intermetallides (MI), are an important applied  problem. At present, the study of aluminum-based metal systems  involving rare-earth metals becomes especially urgent. The problem  of determining the regularities of the changes in the thermochemical characteristics of the IM aluminum-lanthanide  systems of the α-Al11Ln3, β- Al11Ln3 and Al3Ln compositions is  considered, by refining the values of the temperature and melting  enthalpy using semiempirical and calculated methods that allow  obtaining fairly complete characteristics on the temperature and enthalpy of melting of the IM compositions of the rich aluminum with  a demand in modern technology.