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ISSN : 1738-1894(Print)
ISSN : 2288-5471(Online)
ISSN : 2288-5471(Online)
모의 금속전환체 U-Nb 합금의 공기중 산화거동
Oxidation Behavior of Simudated Metallic U-Nb Alloys in Air
Abstract
In order to enhance an oxidation resistance of the pure uranium metal under air condition, a small quantity of niobium(Nb) which is known to mitigate metal oxidation is added into uranium metal as an alloying element. A simulated metallic uranium alloy, U-Nb has been fabricated and then oxidized in the range of 200 to under the environment of the pure oxygen gas. The oxidized quantity in terms of the weight gain has been measured with the help of a thermogravimetric analyzer. The results show that the oxidation resistance of the U-Nb alloy is considerably enhanced in comparison with that of the pure uranium metal. It is revealed that the oxidation resistance of the former with the niobium content of 1, 2, 3, and 4 is : 1) 1.61, 7.78, 11.76 and 20.14 times at the temperature of\;1.45, 5.98, 10.08 and 11.15 times at \;1.33, 4.82, 8.87 and 6.84 times at \; higher than that of the latter, respectively. Besides, it is shown that the activation energy attributable to the oxidation is 17.1321.92 kcal/mol/
Oxidation Kinetics, Uranium, Uranium Alloy, Spent Nuclear Fuel, lOxidation Resistance, 산화속도, 우라늄, 우라늄합금, 사용후핵연료, 산화저항성
Reference
JNFCWT
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