Thermodynamic characteristics of praseodymium in the gallium–aluminum eutectic melt


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Abstract

The Ga–Al eutectic melt saturated with praseodymium was studied in the temperature range 572–1076 K by electromotive force (emf) method relative to the reference electrode (InL + PrIn3, where L is the liquid phase) in a LiCl–KCl–CsCl eutectic electrolyte. The partial molar thermodynamic functions (enthalpy, entropy, and Gibbs energy) of praseo dymium in a Ga–Al eutectic melt were calculated. According to the emf measurements of the two-phase Pr–Ga–AlL + intermetallic compound alloys equilibrated with the Ga–Al eutectic melt saturated with praseodymium, there are intermetallic compounds PrGa6, PrGa4, and Pr0.22Ga0.78(PrGa2) in the temperature ranges 572–741, 741–883, and 883–1076 K, respectively.

About the authors

S. Yu. Melchakov

Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences

Author for correspondence.
Email: s.yu.melchakov@gmail.com
Russian Federation, 101 ul. Amundsena, Ekaterinburg, 620016

L. F. Yamshchikov

Ural Federal University named after the first President of Russia B. N. Yeltsyn

Email: s.yu.melchakov@gmail.com
Russian Federation, 19 ul. Mira, Ekaterinburg, 620002

V. A. Ivanov

Ural Federal University named after the first President of Russia B. N. Yeltsyn

Email: s.yu.melchakov@gmail.com
Russian Federation, 19 ul. Mira, Ekaterinburg, 620002

V. A. Volkovich

Ural Federal University named after the first President of Russia B. N. Yeltsyn

Email: s.yu.melchakov@gmail.com
Russian Federation, 19 ul. Mira, Ekaterinburg, 620002

A. G. Osipenko

Ural Federal University named after the first President of Russia B. N. Yeltsyn; JSC “SSC RIIAR,”

Email: s.yu.melchakov@gmail.com
Russian Federation, 19 ul. Mira, Ekaterinburg, 620002; 9 Zapadnoe shosse, Dimitrovgrad, Ulyanovsk Region, 433510

M. Sh. Ismailov

Ural Federal University named after the first President of Russia B. N. Yeltsyn

Email: s.yu.melchakov@gmail.com
Russian Federation, 19 ul. Mira, Ekaterinburg, 620002

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