OALib Journal期刊
锂陶瓷氚增殖剂的中子辐照性能与产氚行为
, PP. 1906-1914
Keywords: 锂陶瓷氚增殖剂 ,产氚行为 ,氦冷球床包层
Abstract:
D-T聚变堆采用氚增殖剂与中子反应生成氚来保证其燃料的“自持”。Li2O、LiAlO2、Li2ZrO3、Li2TiO3和Li4SiO4等锂陶瓷材料由于具有良好的化学稳定性、机械力学性能和产氚性能等优点,是聚变堆主要的候选产氚材料,而其在中子辐照环境下的各种性能和行为是氚增殖包层模块设计所关心的重要内容。本文介绍了国际上锂陶瓷产氚增殖剂的辐照实验研究概况,对材料的辐照性能(材料稳定性、热导性、离子电导性和活化性能等)、堆内/堆外产氚行为、影响氚在陶瓷材料中扩散或释放的各种因素,以及近来关注较多的辐照缺陷与释氚行为的相互关系等方面进行了归纳、分析和总结,同时针对中国确定的氦冷固态球床包层模块的技术路线,提出了需要广泛而系统地开展锂陶瓷基础研究的建议,指出今后国际上氚增殖剂的研究重点是高燃耗(>10%)和高荷载破坏情况下锂陶瓷材料的辐照产氚性能,以及聚变堆氚增殖包层工程条件因素,如磁场、等离子体诱发电流和中子倍增剂等对锂陶瓷小球释氚行为的影响。
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