Comparison of electrochemical behavior between coarse-grained and fine-grained AISI 430 ferritic stainless steel by Mott–Schottky analysis and EIS measurements

Fattah‐alhosseini, Arash; Vafaeian, S.

doi:10.1016/j.jallcom.2015.03.142

Cited by 197 publications

(59 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…When exposed to an aqueous solution, the passive films behave as extrinsic semiconductors due to the presence of defects. These defects can be electron acceptors in the case of p‐type doping, or electron donors, resulting in n‐type doping . The passive film with a deficiency in metal ions or excess of cationic vacancies generally behaves as p‐type, while a passive film with excess of anionic vacancies or interstitials cations behave as n‐type semiconductor .…”

Section: Resultsmentioning

confidence: 99%

Electrochemical study of passive films formed on welded lean duplex stainless steel

Sicupira

Cardoso

Bracarense

et al. 2016

Materials & Corrosion

View full text Add to dashboard Cite

Duplex stainless steel (DSS) has been considered as an excellent material of construction for applications where high corrosion resistance and high mechanical strength are required. The use of this material can minimize costs related to corrosion in different industries, for example, in the biodiesel industry. The objective of this study is to evaluate the electrochemical and electronic properties of passive films of thick welded joints of UNS S32304 lean duplex stainless steel (LDSS) fabricated by different welding processes, in acidified glycerin, a byproduct of the biodiesel industry. The electrochemical and electronic behavior of the passive films formed on UNS S32304 LDSS was evaluated using electrochemical impedance spectroscopy and Mott–Schottky measurements. The capacitance study shows that the passive films formed on welded DSS behave as n‐ and p‐type semiconductors above and below the flat band potential, respectively. Furthermore, the samples welded by the gas metal arc welding process exhibited better corrosion resistance than other welding process using the same filler metal.

show abstract

Section: Resultsmentioning

confidence: 99%

Electrochemical study of passive films formed on welded lean duplex stainless steel

Sicupira

Cardoso

Bracarense

et al. 2016

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…6). This EEC was adopted to describe the interface between electrolyte and surface oxides of uncoated stainless steels [27][28][29] . The fitted data are shown along with the experimental data in Fig.…”

mentioning

confidence: 99%

Electrochemical Study of the AISI 409 Ferritic Stainless Steel: Passive Film Stability and Pitting Nucleation and Growth

et al. 2017

View full text Add to dashboard Cite

The aim of the present work was to study the passive film stability and pitting corrosion behavior of the AISI 409 stainless steel. The electrochemical tests were carried out in 0.1 M NaCl solution at room temperature. The general electrochemical behavior was assessed using electrochemical impedance spectroscopy (EIS) measurements whereas the semiconducting properties of the passive film were evaluated by the Mott-Schottky approach. Pitting corrosion was investigated using potentiodynamic and potentiostatic polarization tests. Surface morphology was examined using confocal laser scanning microscopy and scanning electron microscopy (SEM). Energy dispersive X-ray spectroscopy (EDS) analyses were carried out to identify the composition of precipitates that could act as preferential sites for the onset of pitting corrosion. The results showed that the passive film presents n-type semiconductive behavior. Grain boundaries played an important role as pitting initiation sites for the AISI 409 stainless steel.

show abstract

“…In the potential range of around -0.3 to 0.0 V SCE , the slopes of the curves are positive, suggesting an n-type semiconductor behavior. According to the point defect model [7,8], the lowered slope and the enlarged carrier density with the increasing temperature indicates the lowered ability of corrosion resistance. In contrast, the slope of the curve is increased by Al addition into the exposed solution with the same exposure temperature.…”

Section: Resultsmentioning

confidence: 99%

Effects of Aluminum Addition on the Corrosion of 316 Stainless Steel in the Simulated Primary Circuit Water of PWR

Song¹,

Khalil²,

Zhang³

et al. 2017

dteees

View full text Add to dashboard Cite

Abstract. The effect of Al addition on the corrosion of 316 SS exposed to simulated primary circuit of PWR has been investigated by potentiodynamic polarization, Mott-Schottky plots and corrosion kinetics. After Al addition, the weight loss of 316 SS was reduced, the semiconductor properties of the oxide film formed on the surface on 316 SS were optimized. The kinetic study indicates that corrosion process is well fitted by the pseudo-first order model. The presence of Al increases the corrosion activation energy resulting in the slowdown of the corrosion of 316 SS. Al additions may impedes the transport of the metal ion in the micropore of the 316 SS. The research may give a good solution for material corrosion in the primary circuit water of PWR.

show abstract

Comparison of electrochemical behavior between coarse-grained and fine-grained AISI 430 ferritic stainless steel by Mott–Schottky analysis and EIS measurements

Cited by 197 publications

References 55 publications

Electrochemical study of passive films formed on welded lean duplex stainless steel

Electrochemical study of passive films formed on welded lean duplex stainless steel

Electrochemical Study of the AISI 409 Ferritic Stainless Steel: Passive Film Stability and Pitting Nucleation and Growth

Effects of Aluminum Addition on the Corrosion of 316 Stainless Steel in the Simulated Primary Circuit Water of PWR

Contact Info

Product

Resources

About