Abstract
In the framework of the HTTR (High Temperature Engineering Test Reactor) project, Japan Atomic Energy Agency has been conducting R&D on thermo-chemical Iodine-Sulfur (IS) process for large scale hydrogen production. Since the IS process constitutes corrosive environments, screening of the materials of construction is very important. Corrosion resistance of lining materials, were examined in 47, 75, 90wt% sulfuric acid for 5 hours at temperatures ranging from 200℃ to 400℃ under inert gas pressure of 2 MPaG. Gold plating materials showed good corrosion resistance irrespective of the base metal, Alloy B2 and SUS304. Soda glass for glass lining material was corroded in 47wt% sulfuric acid at 200℃. However, it showed good corrosion resistance in 75wt% sulfuric acid at 300℃ and in 90wt% sulfuric acid at 400℃.
