| 二次自蔓延高温合成钙钛矿固化90Sr |
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| 引用本文： | 张瑞珠,仝玉萍,杨丽,郭志猛,李勇.二次自蔓延高温合成钙钛矿固化90Sr[J].核化学与放射化学,2009,31(4):237-241. |
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| 作者姓名： | 张瑞珠 仝玉萍 杨丽 郭志猛 李勇 |
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| 作者单位： | 1.华北水利水电学院 机械学院，河南 郑州450011； 2.北京科技大学 材料科学与工程学院，北京100083；3.徐州工程学院 机电工程学院，江苏 徐州221008 |
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| 基金项目： | 国家自然科学基金资助项目，河南省高效科技创新人才支持计划，华北水利水电学院高层次人才启动基金 |
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| 摘 要： | 采用二次自蔓延高温合成(SHS)技术制备钙钛矿固化高放废物90Sr,通过XRD, SEM和PCT粉末浸泡法,研究了钙钛矿固化体的微观组织、浸出率以及其对高放废物~(90)Sr的最大包容量.结果表明,固化体样品密度高、孔隙率小,浸出率都小于0.1 g/(m~2·d),对SrO的包容量可达36%(质量分数);表明自蔓延高温合成的钙钛矿人造岩石固化体化学稳定性好、包容量大,是固化高放废物的理想固化体.
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| 关 键 词： | 钙钛矿 高放废物(HLW) 固化 自蔓延高温合成 浸出率 |
Synthesis of Perovskite by Double-SHS for Immobilization of ~(90)Sr |
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| ZHANG Rui-zhu,TONG Yu-ping,YANG Li,GUO Zhi-meng,LI Yong.Synthesis of Perovskite by Double-SHS for Immobilization of ~(90)Sr[J].Journal of Nuclear and Radiochemistry,2009,31(4):237-241. |
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| Authors: | ZHANG Rui-zhu TONG Yu-ping YANG Li GUO Zhi-meng LI Yong |
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| Affiliation: | 1. North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China; 2. Materials Science and Technology School, University of Science and Technology Beijing, Beijing 100083, China；3. Mechanical and Electronic Engineering Department, Xuzhou Institute of Technology, Xuzhou 221008, China |
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| Abstract: | Perovskite synroc samples containing high level radioactive waste (HLW) ~(90)Sr were synthesized by double self-propagating high-temperature synthesis (SHS) and their properties, including leach rate, density, microhardness and the maximum content of high level radioactive waste in the samples, were tested by X-ray diffraction, scanning electron microscope and PCT powder immersion analysis. The results indicate that the high density Sr~(2+)-CaTiO_3 composite are formed, and leaching rates are less than 0.1 g/(m~2·d), and the maximum SrO content in the composite can reach 36% in mass. It can be concluded that the perovskite synroc is a perfect material to immobilize HLW. |
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| Keywords: | perovskite high level radioactive waste immobilization self-propagating high-temperatures synthesis leaching rate |
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