Influence of Macro- and Microfouling on Corrosion of Steel Bridge Piles Submerged in Natural Waters

Study on corrosion, hydrogen permeation, and stress corrosion cracking behaviours of AISI 4135 steel in the tidal zone

“…For example, Zhou et al 10 reported the non-existence of pits on the X80 steel surface after multiple simulated tidal cycles in seawater, whereas Yu et al 11 reported that high-strength steel exhibits a temperature-dependent pitting behaviour in natural wet-dry cyclic marine environments. Furthermore, crevice corrosion or localised corrosion of steel caused by macro-fouling species such as barnacles and oysters in field marine environments was also reported in many studies [12][13][14] . Therefore, the investigation of corrosion and SCC behaviours of high-strength steels in natural wet-dry cyclic marine environments, especially considering the promoting effect of pitting corrosion or local corrosion on SCC, is of practical significance 6,15 .…”

“…The sample placed at the MTL was significantly affected by biofouling; almost the entire sample surface was covered by barnacles and oysters. Fouling organisms that attach to the steel surface play an important role in the corrosion, e.g., by promoting the localised corrosion or crevice corrosion of the steel 13,14 . Therefore, the corrosion of steel in outdoor marine environments is affected by not only corrosion products but also other factors such as biofouling and inorganic sediments, significantly differing from that in indoor simulated tests.…”

Identification of steel corrosion associated with sulfate‐reducing bacteria by electrochemical noise technique

“…There are different electrochemical methods to monitor corrosion and also mitigation techniques such as the application of coatings and cathodic protection. [18][19][20] Conventional electrochemical techniques (such as open-circuit potential [OCP], linear polarization resistance [LPR], and electrochemical impedance spectroscopy [EIS] measurements) to identify MIC has been complicated due to the effects of the surface layers, the mechanism for charge transfer by the bacteria on the steel surface, [21][22][23] as well as the small spatial resolution for localized corrosion activity. Both OCP and LPR measurements can provide information on general and uniform corrosion conditions but may not necessarily identify localized corrosion activity associated with MIC.…”