Фазовая диаграмма системы Mn-Zr

К оглавлению: Другие диаграммы (Others phase diargams)


Mn-Zr (Manganese-Zirconium) M. Lasocka The assessed Mn-Zr phase diagram is primarily from [86Nis], with slight modification according to the data of [76Sve]. The solid solubility of Zr in (Mn) does not exceed 1.25 at.% Zr, reaching this maximum concentration in (dMn) at the eutectic temperature of 1160 C, in (bMn) at the peritectoid temperature of 1140 C, and in (aMn) at the peritectoid temperature of 730 C [Brandes]. The maximum solubility of Mn in (bZr) is 10.2 at.% Mn at the eutectic temperature near 1090 C. The aZr-based solid solution exists in a narrow composition range, with the maximum about 1 at.% Mn at the eutectoid temperature of 790 C [86Nis]. The most important feature of Mn2Zr is its strong affinity for hydrogen, resulting in the formation of hydrides. The H content in the Mn2Zr phase decreases with increasing Mn content [86Nis]. Mn2Zr is paramagnetic at room temperature [81Pou]. The hydriding process transforms paramagnetic Mn2Zr into a ferromagnetic material. 67Vor: Yu.V. Voroshilov and Yu.B. Kuzma, Poroshk. Metall., (6), 49-52 (1967) in Russian; TR: Sov. Powder Metall. Met. Ceram., (6), 466-469 (1967). 72Pet: V.V. Petkov, Izv. Akad. Nauk SSSR, Met., (5), 155-157 (1972) in Russian. 76Sve: V.N. Svechnikov and V.V. Petkov, Akad. Nauk Ukr. SSR Metallofiz., (64), 24-28 (1976) in Russian. 80Ess: R.M. van Essen and K.H.J. Buschow, Mater. Res. Bull., 15, 1149-1155 ( 1980). 81Mar: V.Ya. Markiv and A.I. Skripka, Izv. Akad. Nauk SSSR, Met., (4), 211-215 (1981) in Russian; TR: Russ. Metall., (4), 196-199 (1981). 81Pou: F. Pourarian, H. Fujii, W.E. Wallace, V.K. Sinha, and H.K. Smith, J. Phys. Chem., 85, 3105-3111 (1981). 83Suz: A. Suzuki, N. Nishimiya, and S. Ono, J. Less-Common Met., 89, 263-268 ( 1983). 84Suz: A. Suzuki and N. Nishimiya, Mater. Res. Bull., 19, 1559-1571 (1984). 86Nis: N. Nishimiya, Mater. Res. Bull., 21, 1025-1037 (1986). 87Bla: Z. Blazina and R. Trojko, J. Less-Common Met., 133, 277-286 (1987). Submitted to the APD Program. Complete evaluation contains 3 figures, 5 tables, and 23 references. Special Points of the Mn-Zr System