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In this paper, spark plasma sintering (SPS) was utilized to prepare simulated waste form intending to deal with high-level radioactive waste in a much fast way. Using Nd as a surrogate for trivalent actinides, a series of compositions with the general formula Gd2-xNdxZr2O7 (0.0 ≤ x ≤ 2.0) were fabricated and characterized. The phase structure, micro-morphology and density were investigated as a function...
Since Nd3+ and Ce4+ are usually taken as surrogates for the trivalent and tetravalent actinides, respectively, simulated nuclear waste form Nd2Ce2O7 and the potential host matrix Gd2Zr2O7 were studied in details to get a better understanding of the radiation stability of fluorite related compounds at the ultimate loading capacity. Both compounds were fabricated by traditional solid state process and...
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