反应堆A_0纯铝的点蚀模拟(英文)  

Simulating of Pit Corrosion of A0 Pure Aluminum Pool Shell

作　　者：白新德[1] 彭德全[1] 贺非[1] 尤引娟[1] 王瑞偏[2] 陆金发[2] 苏亲善[2] 

机构地区：[1]清华大学材料科学与工程系,北京100084 [2]清华大学核能技术研究院,北京100084

出　　处：《稀有金属材料与工程》2004年第5期494-497,共4页Rare Metal Materials and Engineering

基　　金：Supported by the National Natural Science Foundation of China(G2000067207-1)

摘　　要：测量A0纯铝在去离子水中的极化曲线用来模拟反应堆池壳的点蚀。研究表明:A0纯铝在去离子水中很容易钝化。实验中用美国EG&G普林斯顿应用研究公司生产的273型恒电位/恒电流仪测量模拟孔电位,极化曲线表明:模拟腐蚀坑处于钝化状态,即便是氧化膜破裂,腐蚀坑也发展得很慢。用pH计测量孔中pH的变化,并得到其工作曲线,此曲线表明:带有氧化膜的点蚀坑坑内存在明显的酸化现象。并对A0铝池壳的服务寿命进行了估计。The anode polarization curve of A(0) pure aluminum in DI (de-ions) water was measured to simulate the pit corrosion of reactor pool shell. It confirmed the A(0) aluminum is easy to passivate in DI water. The potential in the pit were determined with EG&G Princeton Applied Research Potentiostat/ Galvanostat Model 273, the polarization curve shows that the simulated corrosion pit was in passivated situation, even if the oxidization film was broken, the corrosion pit will probably develop slowly, the varied pH in pit was determined with pH measurer, and the working curves were obtained, which shows the obvious acidification exists in pit for the sample with oxidization film. The service life of A(0) aluminum pool shell was estimated.

关 键 词：点蚀 纯铝 数值模拟 阳极极化 电极电位 酸化 

分 类 号：TL375[核科学技术—核技术及应用]