Фазовая диаграмма системы Pt-U

К оглавлению: Другие диаграммы (Others phase diargams)


Pt-U (Platinum-Uranium) B.A.S. Ross and D.E. Peterson The assessed Pt-U phase diagram is based on the work of [60Par]. Analyses by [60Par] revealed maximum solubilities of 5 at.% Pt in (gU) at the eutectic temperature, 2.35 at.% Pt in (bU) at 705 C, and 0.9 to 1.2 at.% Pt in (aU) between room temperature and 589 C, respectively. [60Par] found a maximum solubility of about 4 at.% U in (Pt) at room temperature with an increase to 4.5 at.% U at the eutectic temperature of 1345 C. [81Sch] reviewed the magnetic properties of the Pt-U intermetallics. PtU is a weak ferromagnet, whereas Pt3U shows an antiferromagnetic transition. Pt2U and Pt5U exhibit no magnetic ordering down to 2.5 K. [83Fri] reported finding no magnetic ordering in either Pt2U or Pt5U. [69Mat], [70Law], and [71Hil] found evidence of a ferromagnetic transition at 27 K in PtU with an additional transition [83Kam] at 19 K, indicating a change in the magnetic spin structure. 55Hea: T.J. Head and G.I. Williams, Acta Crystallogr., 8, 494-498 (1955). 60Par: J.J. Park and D.P. Fickle, J. Res. Natl. Bur. Std., 64A, 107-117 (1960). 65Kut: V.I. Kutaitsev, N.T. Chebotarev, I.G. Lebedev, M.A. Andrianov, V.N. Konev, and T.S. Menshikova, Plutonium 1965, A.E. Kay and M.B. Waldron, Ed., Proc. 3rd Int. Conf. Plutonium, London, 22-26 Nov 1965, Chapman and Hall, London, 420-449 (1967). 67Kut: V.I. Kutaitsev, N.T. Chebotarev, M.A. Andrianov, V.N. Konev, I.G. Lebedev, V.I. Bagrova, A.V. Beznosikova, A.A. Kruglov, P.N. Petrov, and E.S. Smotritskaya, At. Energy (English Trans.), 23(6), 511-519 (1967). 69Mat: B.T. Matthias, C.W. Chu, E. Corenzwit, and D. Wohlleben, Proc. Natl. Acad. Sci., 64, 459-461 (1969). 70Law: A.C. Lawson, Phys. Lett. A, 33(4), 231-232 (1970). 71Erd: B. Erdmann and C. Keller, Inorg. Nucl. Chem. Lett., 7, 675-683 (1971). 71Hil: H.H. Hill and R.O. Elliott, Phys. Lett. A, 35(2), 75-76 (1971). 81Sch: W.D. Schneider and C. Laubschat, Phys. Rev. B, 23, 997-1005 (1981). 83Fri: P.H. Frings, J.J.M. Franse, F.R. deBoer, and A. Menovsky, J. Magn. Magn. Mater., 31-34, 240-242 (1983). 83Kam: C.F. Kamma, P.H. Frings, J.C.P. Klaasse, and J.J.M. Franse, Physica B, 119, 72-77 (1983). 86Law: A.C. Lawson, A. Williams, J.G. Huber, and R.B. Roof, J. Less-Common Met. , 120, 113-122 (1986). Published in Bull. Alloy Phase Diagrams, 11(3), Jun 1990. Complete evaluation contains 1 figure, 4 tables, and 23 references. Special Points of the Pt-U System