On the constitution and thermodynamics of Ni–Tb alloys

Thermodynamics of Ni richest intermetallics along the rare-earth series

“…This set of data comes entirely from the emf vs. T experimental measurements obtained from galvanic cells with CaF 2 single crystal as electrolyte. At the present time we can find in literature data for Sm 2 [2], all obtained in our laboratory as well as Gd 2 Ni 17 [3] and Tb 2 Ni 17 [4] by another group. In this work, further data are added concerning Pr 2 Ni 13 , Nd 2 Ni 17 , and Er 2 Ni 17 .…”

“…3 as function of the atomic number. The comparison with data reported in literature [3,4] reveals for Gd and Tb that they are without internal consistency. Furthermore, such data are in disagreement with the general trend found in this work.…”

“…In order to obtain h, i.e. x RE /0, it is customary to assume [3,4] a linear dependence of the lattice parameter of Ni solid solution, a Ni ss , from the atomic fraction of RE, x RE , according to equation:…”

“…[3,4] have been also reported. Apart of the difference in the values, the curves appear to be very similar and they display a well-known trend of the enthalpies of formation of a given intermetallic stoichiometry along the rare-earth series.…”

Phase diagram of the Tb–Ni binary system

“…So it is desirable to provide information on the binary Tb-Ni system. Rong and Schaller [3] made a critical evaluation of the available publications on the Tb-Ni system. Eight intermetallic compounds-Tb 2 Ni 17 , TbNi 5 , Tb 2 Ni 7 , TbNi 3 , TbNi 2 , TbNi, Tb 3 Ni 2 and Tb 3 Ni-have been reported to exist [3,4].…”