Corrosion Behavior of Oxide Dispersion Strengthened Ferritic Alloys in Liquid Sodium

摘要

Corrsion behavior of four oxide dispersion strengthened (ODS) ferritic alloys ex- posed in thermal convective liquid sodium loop for 4 000 h was examined. Surface observation results reveal that coral-like surfaces with deposit initially formed on surfaces of all exposed specimens. In tested alloy S2, X-phase precipitated in specimen center, and a depleted X-phase zone formed near the specimen surface. There is a transition area between the surface and center. In the other tested alloys, no notable change on microstructure was observed.