The behaviour of corrosion-resistant steels in seawater: A review

Chemical composition and electronic structure of the passive layer formed on stainless steels in a glucose-oxidase solution

“…Thus, the authors calculate the bandgap of Cr(OH) 3 around 2.5 eV. Consequently, we propose to assign the low energy contribution C 1 (bandgap of 3 eV) to the presence of n-type semiconductor Cr 2 O 3 or possibly Cr(OH) 3 .…”

“…In natural aerated waters, an increase of the free corrosion potential E corr (or open circuit potential OCP) of stainless steel (SS) samples is frequently observed as a consequence of the settlement of a biofilm on the metallic surface [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. The OCP rises quickly until it reaches values ranging between +100 and +350 mV/SCE, which enhances the risk of initiation of pitting corrosion and therefore is a threat to the metal durability.…”

Ennoblement of stainless steel in the presence of glucose oxidase: Nature and role of interfacial processes

“…It is generally observed that the free corrosion potential (E corr ) of stainless steels (SS), exposed in natural water, increases up to about 0.3 V/SCE [1][2][3][4]. Today, it is commonly agreed that E corr ennoblement is related to biofilm formation [5].…”

Corrosion Protection of Al Alloys: Organic Coatings and Inhibitors

“…Galvanic corrosion occurs, when a metallic contact is made between a nobler and a less noble one (Wallen 1986;Dexter 1999;Bardal et al 1993). A necessary condition is that there is also an electrolytic condition between the metals, so that a closed circuit is established.…”

“…Galvanic corrosion is one of the major practical corrosion problems of aluminium and aluminium alloys (Dexter 1999) since aluminium is thermodynamically more active than most of the other common structural materials and the passive oxide which protects aluminium may easily be broken down locally when the potential is raised due to contact with a nobler material. This is particularly the case when aluminium and its alloys are exposed in waters containing chlorides or other aggressive species such as SO 4 (Bardal et al 1993). The series of standard reduction potentials of various metals can be used to explain the risk of galvanic corrosion; however these potentials express thermodynamic properties, which do not take into account the kinetic aspects (Valen et al 1989).…”