Open AccessUranium-platinum system
Author(s) -
J. J. Park,
D.P. Fickle
Publication year - 1960
Publication title -
journal of research of the national bureau of standards. section a. physics and chemistry
Language(s) - English
Resource type - Journals
eISSN - 2376-5704
pISSN - 0022-4332
DOI - 10.6028/jres.064a.009
Subject(s) - platinum , uranium , eutectic system , intermetallic , allotropy , materials science , phase diagram , metallurgy , phase (matter) , chemistry , alloy , biochemistry , organic chemistry , catalysis
The phase diagram of the uranium-platinum system was constructed from data obtained by thermal analysis, metallographic examination, and X-ray diffraction. The system is characterized by four intermetallic compounds: UPt, formed peritectoidally at 961° C; UPt 2 , formed peritectically at 1,370° C; UPt 3 , melting congruently at 1,700° C; and UPt 5 , formed peritectically at 1,460° C. One eutectic occurs at 1,005° C and 12 a/o platinum, and a second at 1,345° C and 87.5 a/o platinum. The maximum solubilities are 4.5 a/o uranium in platinum and 5 a/o platinum in gamma-uranium. Platinum lowers the gamma-beta uranium transformation to 705° C and the beta-alpha transformation to 589° C.