Dynamic corrosion of nickel at 1500 F by sodium hydroxide with various additives in a torrid circulating apparatus

摘要

Metallic sodium chloride, calcium hydride, sodium aluminate, and an alloy of aluminum were added to sodium hydroxide in individual nickel tubes and corrosion tested at a fluid velocity of 15 feet per second with a hot-section temperature of 1500 degrees F and a hot-to-cold-section temperature difference of 20 degrees to 30 degrees F. A toroid circulating apparatus was used and the specimens were run for a period of 24 hours or until failure occurred. Various methods of evaluating the severity of corrosion are discussed.