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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 37  1978
Preparation and Sintering of Oxide Reduced and Arc Melted Uranium-Plutonium Carbides*
B. D. ZOPE
Pages : 1-7
DOI : 10.1080/0371750X.1978.10840662
Abstract
A solid solution of uranium-plutonium carbide with less than 0.1% oxygen content was prepared by carbothermic reduction of mixed oxides U02 and Pu02 at 1700C for 3 hours in vacuum. The carbides reduced in argon had higher oxygen content than those prepared in vacuum. It was found that the amount of sesquicarbide formed remained the same for carbon contents varying from 42.7 to 56.5 atomic% in vacuum reductions. However, single phase (U,Pu)C could be obtained with 47 atomic% carbon at 1700C, and with stoichiometric amount of carbon at 1800C. The lattice parameter varied from 4.9546A to 4.9657 A depending on the conditions of reduction and composition. The plutonium loss during reduction was around 0.6 %, while it was higher for the composition with 42.7 atomic% carbon. The pellets made from oxide reduced and arc melted carbide powders ( < 44 micron size) were sintered to 80-83% theoretical density at 1750C. The same degree of densification could be attained at 1500C with 5-10 micron size powders.
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