当前位置：首页 > 过刊浏览->2019年40卷第8期
快堆蒸汽发生器用Cr-Mo钢在高温钠中的腐蚀行为
Corrosion Behavior of Cr-Mo Steel of Fast Reactor Steam Generator in Elevated Temperature Sodium
浏览(1622) 下载(5)
- DOI:
- 作者:
- 韩丽青 龙斌 张金权 秦博 付晓刚 王起江 徐海涛
HAN Liqing;LONG Bin;ZHANG Jinquan;QIN Bo;FU Xiaogang;WANG Qijiang;XU Haitao
- 作者单位:
- 中国原子能科学研究院反应堆工程技术研究部 宝钢研究院钢管研究院
Department of Reactor Engineering Research and Design,China Institute of Atomic Energy,Beijing 102413,China;Steel Tube Division,Baosteel Research Institute,Shanghai 201900,China
- 关键词:
- 蒸汽发生器 CR-MO钢 腐蚀 液态高温钠
steam generator Cr-Mo steel corrosion liquid elevated temperature sodium
- 摘要:
- 以实验快堆蒸汽发生器用结构材料为研究对象,采用在静态高压釜及热对流动态回路中挂样的方法,对比研究了3种结构材料(进口T91、国产T91和T22)在500℃液态钠介质中的腐蚀特性以及钠介质对材料力学性能和成分的影响。结果表明,3种材料在动态钠中的腐蚀速率大于在静态钠中的腐蚀速度,且在动态或静态钠中的耐腐蚀性次序由高到低是进口T91、国产T91和T22。静态试验后,3种材料表面均出现少量氧化物腐蚀产物,国产T91是Cr2O3、Fe2O3,进口T91是Fe2O3、Cr2O3、Na0.52 Cr O2,而T22表面仅有Fe3O4。进口T91的腐蚀产物最致密,颗粒最小,而T22的腐蚀产物颗粒最大。相反,在动态试验后,3种材料表面均未见腐蚀产物沉积。The corrosion characteristics of three structural materials(imported T91,domestic T91 and T22)in liquid sodium medium at 500℃and the influence of sodium medium on the mechanical properties and composition of the materials were compared and studied by means of hanging samples in static autoclave and dynamic loop of thermal convection.The results show that the corrosion rate of the three materials in dynamic sodium is higher than that in static sodium,and the corrosion resistance order in dynamic or static sodium is from high to low:imported T91,domestic T91 and T22.After the static test,a small amount of oxide corrosion products appeare on the surface of the three materials.Domestic T91 is Cr2 O3 and Fe2 O3,imported T91 is Fe2 O3,Cr2 O3 and Na0.52 Cr O2,while the surface of T22 is Fe3 O4.The corrosion products of imported T91 are the densest with the smallest particles,while the corrosion products of T22 had the largest particles.On the contrary,no corrosion products are deposited on the surfaces of the three materials after dynamic test.