Фазовая диаграмма системы Rh-Y

К оглавлению: Другие диаграммы (Others phase diargams)


Rh-Y (Rhodium-Yttrium) Editor Eight intermediate compounds have been reported. Rh5Y is stable only at elevated temperatures [73Gha] (Rh5Y decomposes into (Rh) and Rh3Y at 900 C). Rh3Y forms by a peritectoid reaction, because it does not exist in the as-cast state [73Gha]. Composition dependence of the lattice parameter observed by [ 73Gha] suggests that the Rh2Y phase has an appreciable solubility range. [ Moffatt] proposed a schematic phase diagram based on this information and assuming a similarity to the Gd-Rh system. The Rh-Y diagram is from [Moffatt] with modifications regarding the temperature range of existence of Rh5Y and Rh3Y.-H.O. 59Com: V.B. Compton and B.T. Matthias, Acta Crystallogr., 12, 651-654 (1959). 65Dwi: A.E. Dwight, R.A. Conner, Jr., and J.W. Downey, Acta Crystallogr., 18, 835-839 (1965). 65Geb: T.H. Geballe, B.T. Matthias, V.B. Compton, E. Corenzwit, G.W. Hull, Jr., and L.D. Longinotti, Phys. Rev. A, 137(1), 119-127 (1965). 72Ram: A. Raman, J. Less-Common Met., 26(2), 199-206 (1972). 73Gha: H. Ghassem and A. Raman, Z. Metallkd., 64(3), 197-199 (1973). 76Mor: J.M. Moreau, D. Paccard, and E. Parthe, Acta Crystallogr. B, 32, 1767- 1771 (1976). 1