Method for fabricating sintered annular nuclear fuel pellet through rod-inserted sintering
AssigneesKorea Atomic Energy Research Institute, Korea Hydro & Nuclear Power Co., Ltd.
InventorsYoung-Woo Rhee, Dong-Joo Kim, Jong-Hun Kim, Jae-Ho Yang, Ki-Won Kang, Keon-Sik Kim, Kun-Woo Song
Life of this patent
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Abstract
A method for fabricating a sintered annular nuclear fuel pellet includes: molding nuclear fuel powder or granules to fabricate an annular nuclear fuel green body; inserting a rod-like shaped structure into the annular nuclear fuel green body; sintering the rod-like shaped structure-inserted annular nuclear fuel green body in a reductive gas atmosphere; and separating the sintered annular nuclear fuel pellet from the rod-like shaped structure.
Claims9
A method for fabricating a sintered annular nuclear fuel pellet, the method comprising:
- pressing nuclear fuel powder or granule to fabricate an annular nuclear fuel green body;
- inserting a rod-like shaped structure into the annular nuclear fuel green body;
- sintering the rod-like shaped structure-inserted annular nuclear fuel green body in a reductive gas atmosphere;
- and
- separating the sintered annular nuclear fuel pellet from the rod-like shaped structure,
- wherein a diameter of the rod-like structure is less than an inner diameter of the annular nuclear fuel green body and is equal to or greater than a largest inner diameter of the sintered annular nuclear fuel pellet without the rod-like structure inserted therein, and
- wherein the rod-like structure has a coefficient of thermal expansion which is equal to or greater than that of the sintered annular nuclear fuel pellet wherein the rod-like structure maintains substantially the same diameter as that before the sintering.
Dependencies are inferred from the claim text.