【摘要】 采用燃烧合成技术(CS)制备了包容高放射性废物的钙钛矿陶瓷固化体,测定了其物理性能。采用PCT法,X射线衍射(XRD)、透射电镜分析了固化体的浸出率、微观结构和相组分。试验结果表明:该方法可获得较高的反应温度,可使反应在瞬间完成,而且获得的产物具有密度高、成分均匀、浸出率低、包容量大等优点,从而达到封闭、隔离高放废物的目的。更多还原

【Abstract】 Perovskite ceramics samples with different simulated high-level waste（HLW） were fabricated and tested by the combustion synthesis-densification.The XRD and SEM/EDS analysis show that the major phase is well concordant with the formulation design.The samples have good physical properties: density(>4.2 g·cm^-3),open porosity（<0.2%） and Vickers hardness((>1000 kg·mm^-2)).The largest SrO content is 35% in the compound with SrO in perovskite.Thus it is a durable material with high waste loading and density,which is in favor for final geological disposal.更多还原