二次自蔓延高温合成SrTiO3固化高放废物  

Synthesis of SrTiO_3 by Double-SHS for Immobilization of High Level Radioactive Waste

作　　者：张瑞珠[1,2] 赵军华[3] 郭志猛[1] 

机构地区：[1]华北水利水电学院,河南郑州450045 [2]北京科技大学材料科学与工程学院,北京100083 [3]河南职业技术学院,河南郑州450046

出　　处：《稀有金属》2009年第1期66-70,共5页Chinese Journal of Rare Metals

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

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。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 

分 类 号：TQ174.758[化学工程—陶瓷工业] TB333[化学工程—硅酸盐工业]