Фазовая диаграмма системы La-Ni

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La-Ni (Lanthanum-Nickel) Y.Y. Pan and P. Nash The assessed La-Ni phase diagram is based mainly on the results of [72Bus] and [82Iva], with review of the data of [47Vog]. The existence of eight compounds was confirmed-La3Ni, La7Ni3, LaNi, La2Ni3, LaNi2, LaNi3, La2Ni7, and LaNi5. All are stoichiometric line compounds, except for LaNi5, which has a homogeneity range at high temperature. Neither La in (Ni) nor Ni in (La) show evidence of solid solubility. There are not enough experimental data to determine the liquidus and transformation lines for the La-rich region. They are shown as dashed lines in the assessed diagram. [85Kno] examined the structure of sputter-deposited amorphousLaxNi1-x alloys ( 0.02 њ x њ 0.30) following 60-min isothermal anneals at temperatures up to 850 C. The results were presented in a diagram format and compared with the equilibrium phase diagram of the La-Ni system. The metastable phase diagram covers from 70 to 96 at.% Ni and approximately 0 to 600 C. [82Sin] suggested that amorphous La-Ni phases might absorb higher concentrations of H2 than the equilibrium LaNi5 intermetallic compound. Although La7Ni3 was observed by [66Kis], [73Olc], and [78Fis], the character of the transformation is still uncertain. Additional work is needed to identify the type of reaction and the liquidus in this region. The transformation curves for aLa = bLa and bLa = gLa should be determined with detailed experimental data. 42Now: H. Nowotny, Z. Metallkd., 34, 247-253 (1942) in German. 47Vog: R. Vogel, Z. Metallkd., 38, 97-103 (1947) in German. 59Wer: J.H. Wernick and S. Geller, Acta Crystallogr., 12, 662-665 (1959). 61Dwi: A.E. Dwight, Trans. ASM, 53, 479-500 (1961). 63Dwi: A.E. Dwight, J.B. Darby, Jr., D.J. Lam, and M.V. Nevitt, ANL-6868, USAEC, 303-305 (1963). 64Abr: S.C. Abrahams, J.L. Bernstein, R.C. Sherwood, J.H. Wernick, and H.J. Williams, J. Phys. Chem. Solids, 25, 1069-1080 (1964). 65Dwi: A.E. Dwight, R.A. Conner, Jr., and J.W. Downey, Acta Crystallogr., 18, 837-839 (1965). 66Kis: F. Kissel, T. Tsuchida, and W.E. Wallace, J. Chem. Phys., 44, 4651-4652 (1966). 67Lem: R. Lemaire and D. Paccard, Bull. Soc. Fr. Min. Crystallogr., 90, 311- 313 (1967) in French. 68Man: R.C. Mansey, G.V. Raynor, and I.R. Harris, J. Less-Common Met., 14, 329- 336 (1968). 69Vir: A.V. Virkar and A. Raman, J. Less-Common Met., 18, 59-66 (1969). 70Bus: K.H.J. Buschow and A.S. Van Der Goot, J. Less-Common Met., 22(4), 419- 428 (1970). 72Bus: K.H.J. Buschow, J. Less-Common Met., 29(2), 203-210 (1972). 73Olc: G.L. Olcese, J. Less-Common Met., 33, 71-81 (1973). 76Van: J.H.N. Van Vucht and K.H.J. Buschow, J. Less-Common Met., 46(1), 133- 138 (1976). 78Fis: P. Fischer, W. Halg, L. Schlapbach, and K. Yvon, J. Less-Common Met., 60(1), 1-9 (1978). 81Ell: R.P. Elliott and F.A. Shunk, Bull. Alloy Phase Diagrams, 2(2), 219-221 ( 1981). 82Iva: V.G. Ivanchenko, G.F. Kobzenko, and V.M. Svechnikov, Dop. Akad. Nauk. Ukr. RSR A, (1), 80-83 (1982) in Ukrainian. 82Sin: A.K. Singh and D.N. Srivastava, J. Less-Common Met., 88, 97-105 (1982). 85Kno: R.W. Knoll, Mater. Lett., 3(4), 137-140 (1985). Published in Phase Diagrams of Binary Nickel Alloys, 1991. Complete evaluation contains 4 figures, 4 tables, and 40 references. 1