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Spark plasma sintering of fine uranium carbide powder

Results of uranium carbide sintering using a spark plasma sintering facility are presented here. The initial uranium carbide powder is produce from thermal decomposition of a citric acid and uranium nitrate mixture. The study shows that spark plasma sintering is a very efficient compaction tool for uranium carbide material (95% theoretical density at 1700°C with a 10 min dwell time and 100 MPa of applied pressure) for the most sinter-active powder (produced at 1200°C).