Experimental investigation on corrosion of structural steels in molten Pb-Mg and LBE
Li Zhao, Cunfeng Yao, Hongpeng Zhang, Zhiguang Wang, X. Xu, Zhiguo Duan, Qin Chang
Abstract
Lead and its alloys are commonly used as coolant and liquid spallation neutron targets for advanced nuclear reactors and ADS systems. Pb-Mg alloy may be a potential coolant and maintain an acceptable corrosion rate without additional oxygen control in comparison with LBE. A comparative study on corrosion behavior of two F/M steels (SIMP, T91) and two austenitic steels (316L, 15-15Ti) in liquid Pb-Mg and LBE at 550 °C for 1000 h has been studied in this work. In Pb-Mg, F/M steels show slight dissolution corrosion and austenitic steels show severe dissolution corrosion. In LBE, all steels form oxide layers and a three-layer structure is observed in F/M steels.
Topics & Concepts
CoolantMaterials scienceAusteniteCorrosionDissolutionMetallurgySpallationAlloyOxideNeutronChemistryMicrostructureNuclear physicsPhysical chemistryPhysicsFusion materials and technologiesNuclear Materials and PropertiesNuclear reactor physics and engineering