Preparation and densification study of sodium zirconium phosphate-doped microwave-sintered uranium tailing ceramics
Source abstract
Abstract
Sodium zirconium phosphate (NaZr 2(PO 4) 3 ; NZP) ceramic is a potential nuclear waste immobilization matrix material with the chemical formula M ⅠM ⅡA 2(BO 4) 3. In this study, a new type of uranium tailing ceramic, Na 2Zr 2SiP 2O 12 was prepared using microwave sintering to immobilize uranium tailings. The effects of Na 2CO 3 doping and sintering temperature on the phase, microstructure, density, and chemical stability of the sintered samples were systematically investigated. The experimental results showed that the samples prepared at 1200 °C exhibited a dense microstructure without element enrichment, and the density of the solidified body reached 2.77 g/cm 3. Moreover, the Na 2Zr 2SiP 2O 12 ceramic exhibited excellent leaching resistance. Therefore, the preparation of Na 2Zr 2SiP 2O 12 ceramics via microwave sintering represents a new method for solidifying uranium tailings.
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Research context
OpenAlex topics: Nuclear materials and radiation effects · Advanced ceramic materials synthesis · Chemical Synthesis and Characterization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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