from the conferences organized by TANGER Ltd.
Corrosion behavior of ferritic-martensitic steel Eurofer in stagnant liquid PbLi was studied. Eurofer is under consideration to be the structural steel for fusion reactors. The aim of this study was to describe behavior of the steel in a static liquid lead-lithium eutectic (PbLi) and improvement of corrosion resistance by application of protective coating. Radio frequency inductively-coupled plasma spray (RF-ICP) was used for deposition of the coating. The experiment was realized at 600 °C for 500 and 1000 hours, and post-test examination of surface and cross-section of the specimen was performed by Scanning Electron Microscope with Energy Dispersive Spectroscopy. Microscopical investigation identified the solution-based attack and Pb penetration into the material as the dominant corrosion damage of steel and coatings showed a promising resistance to the corrosive medium. Pb penetration zone deepened with increasing time of exposure. Evaluation of steel protected by Fe coating revealed no Pb penetration into the coating and no solution-based attack was found. Steel was protected from any kind of elemental dissolution or microstructural degradation.
Keywords: Ferritic-martensitic steel, liquid PbLi, coating, nuclear application, solution-based attack© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.