In situ surface investigation of austenitic stainless steel in nitric acid medium using electrochemical atomic force microscopy

Padhy, N.; Ningshen, S.; Mudali, U. Kamachi; Raj, Baldev

doi:10.1016/j.scriptamat.2009.09.026

Cited by 24 publications

(11 citation statements)

References 7 publications

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“…In the other study, the anodic polarization curves showed no significant changes in corrosion potential even with an increase in nitric acid concentration in the presence of oxidizing ions [6]. For austenitic stainless steel in nitric acid solutions, it is found [7] that the passive film consists of platelet-like structures at lower concentrations of nitric acid. This study also showed that at higher concentrations of nitric acid, the platelet-like structures disappear.…”

Section: Introductionmentioning

confidence: 73%

Effect of solution pH on the electrochemical behaviour of AISI 304 austenitic and AISI 430 ferritic stainless steels in concentrated acidic media

Fattah‐alhosseini

Vafaeian

2015

Egyptian Journal of Petroleum

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In this study, the effect of solution pH on the electrochemical behaviour of AISI 304 austenitic and AISI 430 ferritic stainless steels at open circuit potential (OCP) in concentrated acidic solutions was studied. Polarization curves showed that the corrosion current density of both stainless steels increased with decreasing pH. Mott-Schottky analysis revealed that passive films formed on AISI 304 and AISI 430 stainless steels behave as n-type and p-type semiconductors and the donor and acceptor densities increased with decreasing pH. Electrochemical impedance spectroscopy (EIS) results showed that the reciprocal capacitance of the passive film is directly proportional to its thickness which decreases with decreasing pH. Thus for both austenitic and ferritic stainless steels in acidic solutions, increasing the solution pH offers better conditions for forming passive films with higher protection behaviour, due to the growth of much thicker and less defective films. ª 2015 Production and hosting by Elsevier B.V. on behalf of Egyptian Petroleum Research Institute. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/ 4.0/).

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Section: Introductionmentioning

confidence: 73%

Effect of solution pH on the electrochemical behaviour of AISI 304 austenitic and AISI 430 ferritic stainless steels in concentrated acidic media

Fattah‐alhosseini

Vafaeian

2015

Egyptian Journal of Petroleum

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“…Conversely to the corrosion behavior of 304L SS in sulfuric acid solution which is well documented [34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49], the oxidation behavior of SS in hot and concentrated nitric acid has been poorly discussed in the literature [5,6,[50][51][52][53][54][55], and it has mostly been studied through electrochemical methods only [5,6,[51][52][53][54][55]. In this case, the use of usual electrochemical techniques may not be sufficient since only a global current is measured, which results from the addition of both anodic (oxidation of the SS) and cathodic (reduction of nitric acid) currents.…”

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confidence: 99%

Kinetics of the oxidation of stainless steel in hot and concentrated nitric acid in the passive and transpassive domains

et al. 2016

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International audienceOxidation of 304L stainless steel was studied in 4 mol/L nitric acid solution at 100°C over a wide potential domain. For different potentials, long-term chronoamperometry experiments coupled with mass loss measurements were performed until steady-state was reached to characterize the corrosion kinetics of the passive and transpassive domains. With EIS and XPS measurements, the passive domain was characterized by the formation of a thin film, the thickness of which was potential dependent

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“…3(b)) is likely due to mechanical polishing of the substrate. In recent studies [26], detail surface dissolution investigations carried on the base 304L SS revealed the formation of platelet-like structures in lower nitric acid concentration (≥0.6 M HNO 3 ). This lead to decrease in roughness and towards higher concentrations (1 M HNO 3 ), increase in roughness (20 nm) due to the increase in the surface dissolution process was observed.…”

Section: Microstructure and Morphology Of Amorphous Mg Coated Type 30mentioning

confidence: 98%

Corrosion behavior of Zr-based metallic glass coating on type 304L stainless steel by pulsed laser deposition method

Ningshen

Mudali

Krishnan

et al. 2011

Surface and Coatings Technology

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In situ surface investigation of austenitic stainless steel in nitric acid medium using electrochemical atomic force microscopy

Cited by 24 publications

References 7 publications

Effect of solution pH on the electrochemical behaviour of AISI 304 austenitic and AISI 430 ferritic stainless steels in concentrated acidic media

Effect of solution pH on the electrochemical behaviour of AISI 304 austenitic and AISI 430 ferritic stainless steels in concentrated acidic media

Kinetics of the oxidation of stainless steel in hot and concentrated nitric acid in the passive and transpassive domains

Corrosion behavior of Zr-based metallic glass coating on type 304L stainless steel by pulsed laser deposition method

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