The transpassive dissolution mechanism of highly alloyed stainless steels

Photoactive WO3 and Se-WO3 thin films for photoelectrochemical oxidation of organic compounds

“…These peaks can be mainly associated with the dissolution of the stainless steel. It has been shown that in this potential region the transpassive dissolution of stainless steels occurs due to the release of soluble Cr(VI) and Fe(III) species [33]. Similar electrochemical behavior of the stainless steel electrode was observed in peroxy-tungstate solution containing 0.01-M H 2 SeO 3 (Fig.…”

TiO2-mediated photoelectrochemical decoloration of methylene blue in the presence of peroxodisulfate

“…This limiting photocurrent is a measure of the overall photo(electro)catalytic efficiency of the TiO 2 electrode and is influenced by various factors (catalyst structure, particle size and form, electrode conductivity, etc.). The observed increase in current at higher than +0.8 V potentials is associated with the transpassive dissolution of stainless steel and oxygen evolution [19].…”

Effect of chromium and nitrogen co‐implantation on the characteristics of the passive layer developed on austenitic and duplex stainless steels

“…Some reported works have suggested that Mo does not modify the composition of passive films (even its presence cannot be detected by surface analytical techniques), [16 -18] but the absorption of MoO 4 2− species at the film/solution interface can promote the formation of Cr 2 O 3 and CrO 3 or accelerate the dissolution of Cr(VI) from the outermost layer of the oxide film, by the formation of soluble molybdates or Cr-Mo species. [19] This effect will also contribute to the increase in the current peak attributed to the chromium activity in the registered potentiodynamic curves of the SAF 2205. The range of −1.2 and −0.3 V potentials in the voltammograms is more difficult to explain because of the interference of the iron and molybdenum species reduction.…”