Current efficiency during the electrochemical machining of iron and nickel

Molecular modeling and electrochemical investigations of the corrosion inhibition of nickel using some thiosemicarbazone derivatives

“…This layer agrees with the finding of Hoare and Wiese [49] about the formation of NO 2 film which transforms slowly to NiO. On the other hand, it may be possible, according to Korte [50], that in the beginning of the repassivation process Ni(NO 3 ) 2 Á4H 2 O forms which changes to NO 2 and NiO, respectively.…”

Investigation of the electrochemical dissolution behavior of Inconel 718 and 304 stainless steel at low current density in NaNO3 solution

“…Anodic dissolution experiments have been carried out on different metals. Early in the 1970s, pure iron, nickel and mild steel were studied in NaClO 3 , NaClO 4 and NaNO 3 solutions, and an oxide film theory was proposed [9][10][11]. Investigations of the anodic processes during the electrochemical micromachining (ECMM) of iron in NaNO 3 have also been performed [12][13][14].…”

Unveiling the transpassive film failure of 3D printing transition alloys

“…an "anodic film" [14,19], a "corrosion product film" [20] or even a "passive film" [15,21,22], even though each of those terms are not exactly synonymous, indicating a lack of precise understanding of the nature of the transpassive state. It is important to note that a distinction must be made between the primary "passive film" that forms at moderate potentials (<1 V vs. standard hydrogen electrode, SHE) and the "transpassive film" ("secondary" passive film) that forms at higher potentials subsequent to the breakdown of the primary passive film.…”