Park JJ, Fickle DP. Uranium-Platinum System.
JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS. SECTION A, PHYSICS AND CHEMISTRY 1960;
64A:107-117. [PMID:
32196149 PMCID:
PMC5287019 DOI:
10.6028/jres.064a.009]
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Abstract
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; UPt2, formed peritectically at 1,370° C; UPt3, melting congruently at 1,700° C; and UPt5, 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.
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