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PRODUCTION OF PURE URANIUM CARBIDE BY CARBURATION OF URANIUM BY GASEOUS HYDROCARBONS ESPECIALLY METHANE. APPLICATION OF THE THERMOGRAVIMETRIC METHOD TO STUDY OF THE KINETICS OF THE REACTION (in French)

Journal Article · · Planseeber. Pulvermet.
OSTI ID:4170512
Uranium monocarbide is preferably produced by one of the three following reactions: U + C, UO/sub 2/ + C, U + hydrocarbons (mainly methane). The latter reaction, which has been only scarcely investigated, shows a marked advantage over the others, yielding uranium monocarbide in powder form. Kinetics of the reaction was examined by means of thermogravimetric methods. The reaction rate is fastest at 900 deg C with calcium reduced uranium powder. Raising the partial pressure of methane as well as decreasing the grain size of the uranium increases the reaction rate. In any case, a mixture of UC + UC/sub 2/ is formed. These facts lead to a new method for producing pure UC. After the formation of a three- phase mixture of U + UC + UC/sub 2/, containing 4.8% C, the powder is heat- treated which leads to the reaction of free U with UC/sub 2/, thus giving pure UC as the end product. (auth)
Research Organization:
Centre d'Etudes Nucleaires, Grenoble, France
NSA Number:
NSA-14-012579
OSTI ID:
4170512
Journal Information:
Planseeber. Pulvermet., Journal Name: Planseeber. Pulvermet. Vol. Vol: 8
Country of Publication:
Country unknown/Code not available
Language:
French