Фазовая диаграмма системы Ru-Zr

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Ru-Zr (Ruthenium-Zirconium) H. Okamoto The assessed phase diagram for the Ru-Zr system was determined approximately by [63Rau] and more accurately by [88Ere] by means of metallographic, thermal, and X-ray analyses. According to an X-ray spectral analysis by [88Ere], the maximum solubility of Zr in (Ru) is 1.9 at.% at the L = (Ru) + Ru2Zr eutectic temperature of 1715 C. The solubility decreases to 0.5 at.% at 1050 C, which was determined by [ 54Hel] from the composition dependence of lattice parameters. About 11 at.% Ru dissolves in (bZr) at 1240 C, according to X-ray investigations [80Ere]. The L + RuZr = Ru2Zr peritectic temperature is 1825 C [88Ere], considerably lower than 1960 с 50 C, reported by [63Rau]. The former value is accepted, because the latter temperature would result in a strongly asymmetrical RuZr liquidus. 42Wal: H.J. Wallbaum, Naturwissenschaften, 30(9-10), 149 (1942) in German. 54Hel: A. Hellawell and W. Hume-Rothery, Philos. Mag., 45, 797-806 (1954). 59Dwi: A.E. Dwight, Trans. Metall. Soc. AIME, 215(4), 283-286 (1959). 61Mat: B.T. Matthias, V.B. Compton, and E. Corenzwit, Phys. Chem. Solids, 19(1- 2), 130-133 (1961). 63Rau: E. Raub and E.D. Rochel, Z. Metallkd., 54(8), 455-462 (1963) in German. 80Ere: V.N. Eremenko, E.L. Semenova, and T.D. Shtepa, Izv. Akad. Nauk SSSR, Met., (2), 212-215 (1980) in Russian; TR: Russ. Metall., (2), 177-180 (1980). 88Ere: V.N. Eremenko, V.T. Khoruzhaya, and T.D. Shtepa, Izv. Akad. Nauk SSSR, Met., (1), 197-202 (1988) in Russian; TR: Russ. Metall., (1), 194-198 (1988). Submitted to the APD Program. Complete evaluation contains 1 figure, 3 tables, and 7 references. Special Points of the Ru-Zr System