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Preliminary Study on Treatment of Simulated Radioactive Graphite Containing Actinides by SHS Method
Author(s): 
Pages: 91-96,101
Year: Issue:  2
Journal: Radiation Protection

Keyword:  SHS 放射性石墨 人造岩石固化 锕系核素;
Abstract: 用自蔓延高温合成技术(SHS),以TiO2、C、Al和CeO2为原料制备出模拟含锕系核素的放射性石墨固化体,借助X射线衍射仪(XRD)和扫描电子显微镜(SEM)等分析手段,对SHS法所制备的含锕系元素An4+放射性石墨固化体进行了分析和研究。实验结果表明:SHS技术应用于固化含模拟锕系元素的放射性石墨在ω(CeO2)≤8%时可自行维持反应,但反应并未进行彻底,反应产物中包含反应物C、TiO2以及Ti和O组成的其他物质,CeO2的固溶度可达2%;SEM照片显示,固化体微观形貌不规则,以板块状为主。
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