Enthalpies of formation of L12 intermetallics derived from heats of reordering
Yavari, A. R. (Laboratoire de Thermodynamique et Physicochimie Métallurgique)
Gialanella, S. (Universita di Trento. Dipartemento di Ingegneria dei Materiali)
Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física)
Le Caer, G. (École des Mines de Nancy)
American Physical Society

Data:	1997
Resum:	A new method is proposed for estimating the enthalpies of formation of L12 (fcc-ordered) intermetallics from the heat release measured during ordering of their disordered polymorphs. The method is applied to Cu3Au, Ni3Al, and Ni3Si. The resulting estimates of enthalpies of formation are close to values obtained by high temperature dissolution calorimetry. They also appear to be more precise than estimates based on Miedema's correlations provided that care is taken to account properly for the magnetic and lattice stability contributions to the formation enthalpies in the ordered and disordered states.
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; Versió publicada
Publicat a:	Physical review letters, Vol. 78, Issue 26 (June 1997) , p. 4954-4957, ISSN 1079-7114

DOI: 10.1103/PhysRevLett.78.4954

4 p, 126.7 KB

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