Synthesis of UB4 by Boro/carbothermal Reduction Method

• 作者: Guo Hangxu Qin Zhi
• 来源期刊: 中国科学院近代物理研究所和兰州重离子研究装置年报:英文版
• 学科: 物理学
• 关键词: ABSORBER ADDITIVE absorbing
• 年，卷（期）: 2018,（1）
• 页码范围: 59-60
• 页数: 2页
• 分类号: O57

摘要

An attempt to extend the life of UO2 fuel assemblies,burnable absorber nuclear fuels containing strong neutron absorbers(such as Gd and Sm)have been proposed in nuclear reactors.Boron can also be employed as a neutron absorber due to its high neutrons absorbing cross-section,which is burned out during operation of reactors.UB4 can be chosen as one additive to product B-bearing UO2 sintered pellets with high sintered densities.In addition,UB4 has been considered as an alternative storage form for geological disposition of spent fuels owing to its stability to moisture and the nonproliferation physical characteristics.