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二次自蔓延高温合成SrTiO3固化高放废物
Synthesis of SrTiO3 by Double-SHS for Immobilization of High Level Radioactive Waste
【摘要】 采用二次自蔓延高温合成(SHS)技术制备了包容高放锶核素(Sr2+)的钛酸锶(SrTiO3)固化体,通过多种现代分析技术研究了钛酸锶固化体的密度、物相组成、微观组织和化学稳定性。结果表明,固化体样品结构稳定性好,密度高,孔隙率小,浸出率小;表明自蔓延高温合成的SrTiO3人造岩石是固化高放废物锶核素的理想固化体。
【Abstract】 SrTiO3 synroc samples were synthesized by double self-propagating high-temperature synthesis(SHS) and their properties,including leach rate,density,microhardness were tested by X-ray diffraction and scanning electron microscopy.The results indicated that the SrTiO3 synroc was of naturally stability with high density,low leaching rate and strong antiradioactive properties.It can be concluded that the SrTiO3 synroc is a perfect material to immobilize HLW.
【关键词】 钛酸锶(SrTiO3);
高放废物;
固化;
自蔓延高温合成(SHS);
浸出率;
【Key words】 SrTiO3; high level radioactive waste; immobilization; self-propagating high-temperatures synthesis;
【Key words】 SrTiO3; high level radioactive waste; immobilization; self-propagating high-temperatures synthesis;
【基金】 国家自然科学基金(20476008);河南省高效科技创新人才支持计划(2008HASTIT015)资助项目
- 【文献出处】 稀有金属 ,Chinese Journal of Rare Metals , 编辑部邮箱 ,2009年01期
- 【分类号】TL941
- 【被引频次】12
- 【下载频次】191