Park JJ. Reactions of Uranium and the Platinide Elements. II. The Uranium-Rhodium System.
JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS. SECTION A, PHYSICS AND CHEMISTRY 1968;
72A:11-17. [PMID:
31824072 PMCID:
PMC6640583 DOI:
10.6028/jres.072a.002]
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Abstract
The phase diagram of the uranium-rhodium system was constructed from data obtained by thermal analysis, metallographic examination, and x-ray diffraction. The system is characterized by four intermetallic compounds: U4Rh3, formed peritectically near 1155 °C and having a solid state transformation at about 720 °C; U3Rh4, formed peritectically near 1450 °C; U3Rh5, formed peritectically near 1550 °C; and URh3, melting congruently at about 1700 °C. One eutectic occurs near 865 °C and 24.5 atomic percent (a/o) rhodium, and a second near 1393 °C and 87 a/o rhodium. The maximum solid solubility of rhodium in uranium is approximately 8 a/o, and of uranium in rhodium is approximately 3 a/o.
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