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Journal of Mineral and Material Science
[ ISSN : 2833-3616 ]

Regularities of Change in Thermodynamic Characteristics of the Intermetallic Composition Ln5 Pb3 (Ln–Lanthanides)

Research Article
Volume 6 - Issue 5 | Article DOI : 10.54026/JMMS/1127

Rakhimzoda KhSh1-4, Anderson CG2, Badalov A3, Rakhmonov BSh3, Eshov BB4 and Gadoev SA3

1Mining and Metallurgical Institute of Tajikistan, Tajikistan
2Kroll Institute for Extractive Metallurgy, Colorado School of Mines, USA
3Tajik Technical University named after academician M S Osimi, Dushanbe
4State Scientific Institution “Center for Research of Innovative Technologies” of the National Academy of Sciences of Tajikistan, Dushanbe

Corresponding Authors

C G Anderson, PE, Director, Kroll Institute for Extractive Metallurgy, Mining Engineering Department, Colorado School of Mines Golden, Colorado USA

Keywords

Intermetallic Compound; Lanthanides – Lead; Melting Temperature and Enthalpy; Formation Enthalpy; Heat Capacity; Pattern of Change; Nature of Lanthanides

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Received : September 03, 2025
Published : September 29, 2025

Abstract

Data on the melting temperature and enthalpy, formation enthalpy and heat capacity of intermetallics of the composition Ln5 Pb3 were obtained by a semi-empirical method. A system analysis was carried out and patterns of change in the specified properties of Ln5 Pb3 were established depending on the nature of the entire series of lanthanides. The patterns are complex in nature with the manifestation of the “tetrad effect”. A deviation from the general pattern is observed for the intermetallics of europium and ytterbium, due to their electron structure.