Analysis of Possible Microbiologically Influenced Crevice Corrosion of 316Stainless Steel in a Seawater Environment

摘要

An analysis was conducted of 316 Stainless Steel components which exhibited anunusual degree of crevice corrosion after exposure to seawater for approximately one year. After conducting research into the possible chemical and microbiological mechanisms for the corrosion, a metallurgical and microscopic examination of the components was performed. Results of these examinations indicated that the corrosion observed was probably the result of an interaction between the Gallionella aerobic iron bacteria and the anaerobic sulfate reducing bacteria Desulfovibrio and Desulfomaculum.