Crevice corrosion theory, mechanisms and prevention methods

Abstract

This paper reviews theory and mechanisms of crevice corrosion as well as its prevention methods. Crevice corrosion is one of the most important and harmful forms of localized corrosion that may cause sudden failure of the metal in service if not prevented properly. So far several protection methods against crevice corrosion have been developed including cathodic protection and using inhibitors and coatings. Hot wax dip method and sealing crevices with polysulfide are two popular protection methods currently used in automotive and aerospace industries respectively. However researches about this devastating type of corrosion still continue.