Uranium dioxide nuclear fuel pellet having metallic microcells and fabricating method thereof
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United States of America Patent
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Jun 13, 2017
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app pub date -
Oct 23, 2013
filing date -
Dec 31, 2012
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Abstract
Disclosed is a uranium dioxide nuclear fuel pellet, which includes metallic microcell partitions having a high protection capacity for fission products and a high thermal conductivity simultaneously. These metal microcell partitions are arranged in the nuclear fuel pellet to trap fission products. Further disclosed is a method of making the uranium dioxide nuclear fuel pellet. The method includes providing a mixture of uranium dioxide powder and additive powder of Cr-containing compound or Mo-containing compound; compressing the powder mixture to form a green pellet; and then sintering the green pellet under reducing gas environment to form the metallic microcell partitions.
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