摘要
采用还原处理技术处理乏燃料,形成的LiO2质量分数高达3%以上,这易使反应容器及传送熔盐的装置腐蚀加快。以浸没法研究了FeAl金属间化合物在750℃熔融LiCl和LiCl-Li2O中的腐蚀行为。FeAl在熔融LiCl-Li2O中的腐蚀比熔融LiCl中的腐蚀快。FeAl合金在750℃熔融LiCl和LiCl-Li2O中表现出相同的腐蚀趋势:腐蚀初期出现快速腐蚀现象,后期由于受扩散机制的控制,腐蚀速度变得很慢,因而腐蚀动力学曲线呈抛物线形状。
Concentration of Li_2O formed in the treatment process of spent fuel can reach to 3 % in weight percentage, which will promote the corrosion of reactive tank and delivery device for molten salt. Corrosion behavior of FeA1 intermetallic compound in molten LiCl and LiC1-Li_2O at 750 ℃ was investigated using immersion experiment.The corrosion of FeA1 is more severe in molten LiCl-Li_2O than in molten LiC1.The corrosion rates of FeA1 in molten LiCl and LiCl-Li_2O all show a same trend: the corrosion rate at the initial stage is fast, and then verv low because the corrosion is controlled by the diffusion mechanism, so the corrosion kinetics follows parabolic law.
出处
《材料保护》
CAS
CSCD
北大核心
2004年第10期1-3,11,共4页
Materials Protection
