Фазовая диаграмма системы Zn-Zr
Zn-Zr (Zinc-Zirconium) J. Dutkiewicz The assessed phase diagram for the Zn-Zr system is based primarily on the thermal analysis, metallographic, and X-ray data of [59Chi], obtained under constrained vapor conditions. Up to 10 at.% Zr, the liquidus curve is based on the solubility data of Zr in liquid Zn given by [61Mar]. The eutectic composition of 0.014 at.% Zr was accepted from [61Mar]. At higher compositions, the assessed diagram is based on [59Chi], coinciding in the range 58 to 75 at.% Zr with the unpublished data of [54Car] quoted in [55Lus]. Above 75 at.% Zr, the assessed diagram is based on the data of [55Lus]. The solid solubility of Zr in (Zn) at 400 C was estimated in [41Geb] to be below 0.014 at.% Zr. There are no data on the solubility of Zn in (Zr). ZnZr2 investigated in [65Ros] is likely to exist; however, its presence has not been confirmed. The structure of Zn22Zr is almost identical to that of Zn14Zr, and it was suggested in [61Sam] that it is a modification of the Zn14Zr structure. Zn2Zr3, described in [61Pet], has been isolated by precipitation from a solution of Zn and Zr in molten Mg; therefore, it may not be an equilibrium phase. 41Geb: E. Gebhardt, Z. Metallkd., 33, 355-357 (1941) in German. 54Car: O.N. Carlson and E. Borders, unpublished research; quoted in [55Lus]. 54Pie: P. Pietrokowsky, Trans. AIME, 200, 219-226 (1954). 55Lus: B. Lustman and K. Kerze, The Metallurgy of Zirconium, McGraw-Hill, New York, 480-483 (1955). 59Chi: P. Chiotti and G.R. Kilp, Trans. Metall. Soc. AIME, 215, 892-898 (1959). 61Dwi: A.E. Dwight, Trans. ASM, 53, 479-501 (1961). 61Mar: A.E. Martin, J. Chem. Eng. Data, 6, 569-599 (1961). 61Pet: D.R. Peterson and H.W. Rinn, Acta Crystallogr., 14, 328-329 (1961). 61Sam: S. Samson, Acta Crystallogr., 14, 1229-1236 (1961). 64Sch: K. Schubert, H.G. Meisner, A. Raman, and W. Rossteutscher, Naturwissenschaften., 51, 287 (1964) in German. 65Ros: W. Rossteutscher and K. Schubert, Z. Metallkd., 56, 730-734 (1965) in German. Submitted to the APD Program. Complete evaluation contains 2 figures, 4 tables, and 12 references.