The influence of the crevice induced IR drop on polarization measurement of localized corrosion behavior of 316L stainless steel
Abstract This paper evaluates the role of IR drop on initiation of the crevice corrosion of 316 L stainless steel in 3.5% NaCl solution. For this purpose, potentiodynamic and galvanostatic experiments and macroscopic/microscopic observations were implemented at crevice gaps of 30, 60, 120 and 240 mm. According to the results, two distinct stages of crevice corrosion of 316 L stainless steel were observed: crevice initiation and propagation. The crevice corrosion was found to be initiated by scattered pits without any significant IR drop. However, when the current increased due to pitting occurrence, the IR drop increased considerably.
Corrosion Science