Compatibility of T91 steel with liquid Pb-Bi eutectic alloy at 450℃

作     者：Zhang Yutuo Dong Hong Wang Pei Ye Zhongfei 

作者机构：Shenyang Ligong University Shenyang National Laboratory for Materials Science Institute of Metal Research CAS 

出 版 物：《China Foundry》 (中国铸造（英文版）)

年 卷 期：2014年第11卷第3期

页      面：197-200页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the Strategic Priority Research Program CAS under Grant No.XDA03010304 the National Science Foundation of China under Grant No.91226204 the Youth Innovation Promotion Association CAS 

主　　题：T91 steel Pb-Bi eutectic alloy compatibility oxide 

摘      要：Pb-Bi eutectic alloy has been receiving increasing attention as a heavy liquid metal coolant in accelerator driven systems and Generation IV fission reactors. Compatibility of structural materials with liquid PbBi eutectic alloy at high temperature is one of the issues concerned. In the present study, corrosion tests of T91 steel in stagnant Pb-Bi eutectic alloy in saturated oxygen condition at 450 oC were carried out. After experiments, the thickness and compositional profile of the oxide layer on the specimen were analyzed using SEM and EDX. Analysis results show that the thickness of the oxide layer increases as the exposure time increases from 500 h to 1,000 h. The thickness of the oxide layer remains almost unchanged at 15 to 16 mm from 1,000 to 1,500 h. Formation of a thick and protective oxide layer at 450 oC prevents the penetration of liquid Pb-Bi eutectic alloy into the matrix of the T91 steel.