原子能科学技术2016，Vol.50Issue(11)：2023-2026,4.DOI:10.7538/yzk.2016.50.11.2023
氢化锆高温氢释放的阻止方法研究
Research on Prevention Method of Hydrogen Release of Zi rconium Hydride at High Temperature
马浩然 1付晓刚 1秦博1
作者信息
- 1. 中国原子能科学研究院反应堆工程技术研究部，北京 102413
- 折叠
摘要
Abstract
Zirconium hydride ,as a moderator of the space reactor ,working at tempera‐ture over 650 ℃ ,in which the initial H/Zr atomicity ratio (H/Zr) is about 1.85 ,will face a risk of hydrogen release and yield reduction of the moderation .Therefore ,it’s necessary to find a prevention method .ZrO2 is a potential material to prevent the hydro‐gen release . The verification of the prevention method was realized by the hydrogen release test and the XRD method w hich could minimize the variation of the H/Zr .T he result indicates that both the plain sample and the pre‐oxidized one lose a tremendous amount of hydrogen w hen they are placed in He atmosphere at 650 ℃ for 120 h , furthermore ,a new substance Zr3 O comes into being on the surface of the latter .How‐ever ,when it is in the gas mixture of He and CO2 ,the hydrogen release of the pre‐oxidized sample is negligible .A conclusion can be draw that the CO2 sustains the ZrO2 structure and the method is available .关键词
氢化锆/氢释放/H/Zr原子数比/二氧化锆/二氧化碳Key words
zirconium hydride/hydrogen release/H/Zr atomicity ratio/zirconium diox-ide/carbon dioxide分类
能源科技引用本文复制引用
马浩然,付晓刚,秦博..氢化锆高温氢释放的阻止方法研究[J].原子能科学技术,2016,50(11):2023-2026,4.
