Thermodynamic and physical properties of Zr 3 Fe and ZrFe 2 intermetallic compounds

authored by
B. O. Mukhamedov, I. Saenko, A. V. Ponomareva, M. J. Kriegel, Aleksandr Chugreev, A. Udovsky, O. Fabrichnaya, I. A. Abrikosov
Abstract

Experimental differential scanning calorimetry measurements and ab-initio simulations were carried out to define the heat capacities of Zr 3 Fe and C15-ZrFe 2 compounds from 0 K up to their maximum stability temperatures. Experimental measurements of heat capacity of each compound were performed for the first time in wide range of temperatures. Density functional theory and quasi-harmonic approximation (QHA) were employed to calculate the free energy of the studied systems as a function of volume and temperature. A good agreement was observed between theoretical and experimental heat capacities within validity range of the QHA. This makes it possible to combine theoretical and experimental data to determine the standard entropies of intermetallic compounds.

Organisation(s)
Institute of Metal Forming and Metal Forming Machines
External Organisation(s)
National University of Science and Technology MISIS
TU Bergakademie Freiberg - University of Resources
Russian Academy of Sciences (RAS)
National Research Nuclear University (MEPhI)
Linkoping University
Type
Article
Journal
INTERMETALLICS
Volume
109
Pages
189-196
No. of pages
8
ISSN
0966-9795
Publication date
06.2019
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
General Chemistry, Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Materials Chemistry
Electronic version(s)
http://liu.diva-portal.org/smash/record.jsf?pid=diva2%3A1328791&dswid=2694 (Access: Open)
https://doi.org/10.1016/j.intermet.2019.01.018 (Access: Closed)
 

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