Фазовая диаграмма системы Gd-Tb

К оглавлению: Другие диаграммы (Others phase diargams)


Gd-Tb (Gadolinium-Terbium) K.A. Gschneidner, Jr. and F.W. Calderwood The assessed phase diagram for the Gd-Tb system is based on the work of [64Bur] , who reported complete solid solubility for the low-temperature allotrope. They also reported a slight gap between the nearly linear liquidus and solidus lines, as well as between the nearly linear solvus lines for the bcc = cph transformation. When highly pure (99.9+ at.% pure) trivalent lanthanide metals that have atomic numbers that differ by no more than four are alloyed, the liquidus/ solidus line is a straight line connecting the melting points of the pure metals. The same relationship is true for the high-temperature transformation from cph to bcc structure. Gd and Tb satisfy these requirements. Therefore, the assessed phase diagram has been drawn to show the relationships that would be expected with high-purity metals. The melting and transformation temperatures for the pure metals have been adjusted to agree with [Gschneidner] . 64Bur: I.V. Burov, V.F. Terekhova, and E.M. Savitskii, Zh. Neorg. Khim., 9, 2036 (1964); TR: Russ. J. Inorg. Chem., 9, 1100 (1964). Published in Bull. Alloy Phase Diagrams, 4(3), Nov 1983. Complete evaluation contains 2 figures and 4 references. 1