Corrosion Environments and Corrosion-resistant Materials for Iodine-sulfur Thermochemical Cycle

The iodine-sulfur (IS) thermochemical cycle is one of the most promising, efficient, massive and CO2-free approaches for nuclear hydrogen production. One of the crucial issues for IS process is the corrosion-resistant performance of the construction materials since the strong corrosive environments are involved. The corrosion environments of Bunsen reaction, sulfuric acid decomposition and hydriodic acid decomposition reaction are discussed. The corrosion-resistant performance of the construction materials such as metals, ceramics and organic polymers used in IS process is reviewed. The potential of the anti-corrosion lining techniques in the process is discussed. The application of ceramic and polymer materials to sulfuric acid decomposition equipment manufacturers is compared. The results may offer basis and theoretical reference for the selection and development of corrosion-resistant materials for IS process.