Фазовая диаграмма системы Er-In

К оглавлению: Другие диаграммы (Others phase diargams)

Er-In (Erbium-Indium) H. Okamoto The assessed Er-In phase diagram is based primarily on the experimental data of [83Yat], with review of the work of [74Die]. The accuracy of the temperature scale may be no better than с5 C, because all quoted temperatures in [83Yat] are rounded to the nearest 10 C. The equilibrium phases are (1) the liquid, L; (2) the (Er) terminal solid solution; (3) "(bEr)" stabilized by In; (4) InNi2-type Er2In, which melts peritectically at 1230 C; (5) Mn5Si3-type Er5In3, which melts congruently at 1270 C and has a ~7 at.% homogeneity range on the In-rich side of stoichiometry; (6) CsCl-type ErIn, which melts congruently at 1220 C; (7) Pd5Pu3-type Er3In5, which melts congruently at 1070 C; (8) AuCu3-type ErIn3, which melts congruently at 1090 C; and (9) the (In) terminal solid solution. The "bEr" = aEr transition, shown at about 1360 C in [83Yat], is now considered to occur above the melting point of Er. The solubility of In in ( bEr) is 20 at.% at 1140 C (eutectic temperature) [83Yat]. The eutectic composition is 23 at.% In [83Yat]. The maximum solubility of In in (aEr) is 7 at.% at 1040 C (eutectoid temperature) [83Yat]. The eutectoid composition is shown at ~15 at.% In [83Yat]. The melting point of In is 156.634 C [Melt]. Although [83Yat] showed the reaction between ErIn3 and (In) at 160 C (above the melting point of In), the reaction involving these phases is considered to be the eutectic type, as in the La-In, Ce-In, and Pr-In systems. The eutectic composition is 99.974 at.% In. The solubility of Er in (In) is negligible, and the eutectic temperature is only slightly lower than the melting point of In. The N‚el temperature of ErIn3 is 6 K [69Bus]. 64Kuz: Yu.B. Kuz'ma and V.Ya. Markiv, Kristallografiya, 9(2), 279-280 (1964) in Russian; TR: Sov. Phys. Crystallogr., 9(2), 218-220 (1964). 65Har: I.R. Harris and G.V. Raynor, J. Less-Common Met., 9, 7-19 (1965). 65Mor: J.L. Moriarty, R.O. Gordon, and J.E. Humphreys, Acta Crystallogr., 19, 285-286 (1965). 68Pal: A. Palenzona, J. Less-Common Met., 16, 379-384 (1968). 69Bus: K.H.J. Buschow, H.W. De Wijn, and A.M. Van Diepen, J. Chem. Phys., 50(1) , 137-141 (1969). 74Die: E.N. Dieva, Physicochemical Studies of Liquid Metals and Alloys, V. G. Bamburov, Ed., Izd. Ural'sk. Nauch. Tsentra Akad. Nauk SSSR, Sverdlovsk, 98- 104 (1974). 81Del: S. Delfino, A. Saccone, D. Mazzone, and R. Ferro, J. Less-Common Met., 81(1), 45-53 (1981). 83Yat: S.P. Yatsenko, A.A. Semyannikov, H.O. Shakarov, and E.G. Fedorova, J. Less-Common Met., 90(11), 95-108 (1983). Submitted to the APD Program. Complete evaluation contains 1 figure, 3 tables, and 11 references. Special Points of the Er-In System