Фазовая диаграмма системы La-Tb

К оглавлению: Другие диаграммы (Others phase diargams)


La-Tb (Lanthanum-Terbium) K.A. Gschneidner, Jr. and F.W. Calderwood [68Koe], using neutron-diffraction methods, found that alloys having 15 at.% or less La had the simple cph structure. At the La-rich end of the system, compositions containing 20, 40, and 50 at.% Tb formed single-phase alloys with the dcph structure. The X-ray pattern of a specimen that contained 75 at.% Tb showed lines that were identified as being from the cph and dcph structures, as well as from a third phase which was thought to be a Sm-type structure. In a 10 at.% Tb alloy, both dcph and fcc phases were observed at room temperature. Editor's note: The La-Tb phase diagram was added as drawn by [Moffatt] to indicate the qualitative features of the system summarized in [85Gsc]. This system is similar to Gd-La. 68Koe: W.C. Koehler, H.R. Child, E.O. Wollan, and J.W. Cable, J. Appl. Phys., 39, 1331 (1968). 85Gsc: K.A. Gschneidner, Jr., J. Less-Common Met., 114, 29-42 (1985). This updates the evaluation published in Bull. Alloy Phase Diagrams, 2(4), Mar 1982. Complete evaluation contains 2 figures and 6 references. 1