Фазовая диаграмма системы Cu-Pr

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Cu-Pr

Cu-Pr (Copper-Praseodymium) P.R. Subramanian and D.E. Laughlin The equilibrium phases of the Cu-Pr system are (1) the liquid, L, with no miscibility gaps; (2) the fcc terminal solid solution, (Cu), with negligible solid solubility of Pr in (Cu); (3) the Pr-rich bcc terminal solid solution, ( bPr), based on the equilibrium phase of pure Pr between 795 and 931 C and with negligible solid solubility of Cu in (bPr); (4) the Pr-rich dcph terminal solid solution, (aPr), stable below 795 C and with negligible solid solubility of Cu in (aPr); (5) the orthorhombic intermediate phase Cu6Pr, stable up to the congruent melting temperature of 962 C; (6) the hexagonal phase Cu5Pr, stable up to the peritectic temperature of ~837 C; (7) the orthorhombic phase Cu4Pr, stable up to the peritectic temperature of 824 C; ( 8) the orthorhombic phase Cu2Pr, stable up to the congruent melting temperature of 841 C; and (9) the most Pr-rich intermediate phase, CuPr, stable up to the peritectic melting temperature of 563 C. The assessed phase diagram is based primarily on the work of [34Can], with the existence of the Cu5Pr phase based on the work of [61Dwi]. 34Can: G. Canneri, Metallurgia Ital., 26, 869-871 (1934) in Italian. 61Dwi: A.E. Dwight, Trans. ASM, 53 479-500 (1961). Published in Bull. Alloy Phase Diagrams, 9(3a), Aug 1988. Complete evaluation contains 2 figures, 5 tables, and 21 references. Special Points of the Cu-Pr System