Enthalpy of formation of intermetallic phases from Al–Li system by solution and direct reaction calorimetric method
PBN-AR
Instytucja
Instytut Metalurgii i Inżynierii Materiałowej im. Aleksandra Krupkowskiego Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
JOURNAL OF ALLOYS AND COMPOUNDS
ISSN
0925-8388
EISSN
Wydawca
ELSEVIER SCIENCE SA
DOI
Rok publikacji
2014
Numer zeszytu
Strony od-do
703-708
Numer tomu
586
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
0,37
Słowa kluczowe
EN
Intermetallics; Hydrogen absorbing materials; Enthalpy; Thermodynamic properties; Calorimetry
Streszczenia
Język
EN
Treść
The formation enthalpy of the AlLi, Al2Li3 and Al4Li9 intermetallic phases was measured with the use of the two calorimetric techniques. The first phase was examined by the solution and the direct reaction calorimetric method, and the other two phases only by the solution method. The phases were prepared from Al and Li in a glove-box filled with high purity argon with a very low concentration of impurities. The X-ray diffraction investigations were conducted to confirm the structure of the prepared phases. Setaram MHTC 96 Line evo calorimeter was used for the measurements at 956 K ± 4 K. The prepared samples of the Al–Li phases, similar to Li, were held in a glove-box to be protected against the reaction with the components of air. Directly before the measurements, the samples of the phases and of Li were transferred into the calorimeter in a tight delivery device. The value of the formation enthalpy measured for the AlLi phase in the case of the solution and direct synthesis technique was equal to −20.7 ± 0.5 and −20.4 ± 0.2 kJ/mol at., respectively. The same thermodynamic function by the solution method for the Al2Li3 and Al4Li9 phases was equal to −19.1 ± 0.4 and −15.1 ± 0.2 kJ/mol at.
Cechy publikacji
ORIGINAL_ARTICLE
Inne
System-identifier
672728
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