Фазовая диаграмма системы Pt-Th

К оглавлению: Другие диаграммы (Others phase diargams)


Pt-Th (Platinum-Thorium) D.E. Peterson The assessed Th-Pt phase diagram is based primarily on [64Tho], who characterized the system up to 1500 C. Many of the phase relationships at higher temperatures were deduced by [64Tho] from the microstructures of the as- cast and annealed specimens. [64Tho] found that the lattice parameter of a 1 at.% Pt alloy aged at 1000 C decreased by only about 0.16% compared to pure Th, which indicates very low solid solubility. [65Geb] noted that ThPt5, ThPt, and Th7Pt3 undergo superconducting transitions near absolute zero K. [71Hil] determined by electrical resistivity measurements that ThPt exhibits normal metallic behavior over the range 1.5 to 300 K. 64Tho: J.R. Thomson, J. Less-Common Met., 6, 3-10 (1964). 65Geb: T.H. Geballe, B.T. Matthias, V.B. Compton, E. Corenzwit, G.W. Hull. Jr., and L.D. Longinotti, Phys. Rev. A, 137(1), 119-127 (1965). 71Hil: H.H. Hill and R.O. Elliott, Phys. Lett. A, 35, 75-76 (1971). 73Erd: B. Erdmann and C. Keller, J. Solid State Chem., 7, 40-48 (1973). Published in Bull. Alloy Phase Diagrams, 11(3), Jun 1990. Complete evaluation contains 1 figure, 3 tables, and 14 references. Special Points of the Th-Pt System