摘要
铅铋共晶合金(Lead Bismuth Eutectic,LBE)氧含量调控直接影响结构材料的铅铋腐蚀性能。气相氧控容易产生放射性气体,固相氧控氧化铅原料则难以在线更换补充,因此国际上发展了电化学氧泵(Electrochemical Oxygen Pump,EOP)控氧方法。本论文采用工艺成熟、高还原催化活性的Pt研制了一种新型的Pt/air型电化学氧泵,并利用电流-时间法在静态LBE实验装置中开展了电化学氧泵的控氧测氧研究。研究结果表明Pt/air型电化学氧泵可以有效调控LBE氧浓度,且氧在液态LBE中的传质扩散可能会影响氧泵除氧效率。
The corrosion performance of structural materials is directly affected by the control of oxygen content in the lead-bismuth eutectic alloy(LBE).Gas-phase oxygen control may generate gaseous radioactive waste,and solid PbO raw materials for solid-phase oxygen control might be hard to replenish online.Therefore,an electrochemical oxygen pump(EOP)oxygen control method has been developed internationally.In this paper,the Pt/air EOP was fabricated using Pt with mature technology and high reduction catalytic activity,and the oxygen control and measurement of EOP was studied by the current-time method in the static lead-bismuth experimental device.The results show that the oxygen content of LBE can be effectively control by Pt/air EOP,and the deoxidation efficiency of the oxygen pump might be limited by the mass transfer of oxygen in the LBE.
作者
孙明辉
刘少军
周丹娜
宋亮亮
李春京
SUN Minghui;LIU Shaojun;ZHOU Danna;SONG Liangliang;LI Chunjing(Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei of Anhui Prov.230031,China;University of Science and Technology of China,Hefei of Anhui Prov.230026,China;National Institute of Neutronic Energy Co.Ltd,Qingdao of Shandong Prov.266041,China;China Three Gorges University,Yichang of Sichuan Prov.443002,China)
出处
《核科学与工程》
CAS
CSCD
北大核心
2023年第3期637-644,共8页
Nuclear Science and Engineering
基金
国家重点研发计划(2020YFB1902104)
国家自然科学基金(51901223)
中国科学院青年创新促进会资助项目(2017486)。
关键词
铅铋合金
电化学氧泵
氧控
氧浓度
Lead-bismuth eutectic
Electrochemical oxygen pump
Oxygen control
Dissolved oxygen concentration
