The influence of cyclic voltammetry passivation on the electrochemical behavior of fine and coarse-grained AISI 430 ferritic stainless steel in an alkaline solution

Vafaeian, S.; Fattah‐alhosseini, Arash; Keshavarz, Mohsen K.; Mazaheri, Yousef

doi:10.1016/j.jallcom.2016.03.222

Cited by 33 publications

(7 citation statements)

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“…These electrochemical factors (corrosion potential (E corr ) and corrosion current density (i corr )) were obtained using the Tafel technique. 51,[58][59][60] The obtained results indicate that both the thermodynamic tendency of corrosion and the corrosion kinetics decreases by rising the content of PN2/PAr from 5.2% to 17.6%. Thus, a specimen with a content of 17.6% P N2 /P Ar exhibits the lowest corrosion current density and so the best corrosion resistance.…”

Section: Eis and Pdp Testsmentioning

confidence: 83%

“…Table 4 illustrates the extracted electrochemical factors from the plots of PDP. These electrochemical factors (corrosion potential ( E corr ) and corrosion current density ( i corr )) were obtained using the Tafel technique 51,58–60 . The obtained results indicate that both the thermodynamic tendency of corrosion and the corrosion kinetics decreases by rising the content of PN2/PAr from 5.2% to 17.6%.…”

Section: Resultsmentioning

confidence: 99%

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Studying the in vitro corrosion response of nanostructured TaN coatings in Hank's physiological solution

Babaei

Fattah‐alhosseini

Elmkhah

et al. 2021

Int J Applied Ceramic Tech

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The goal of this research is to determine the effect of N 2 pressure to argon pressure on the microstructural analysis and corrosion behavior of nanostructured TaN deposited coatings using a reactive DC-magnetron sputtering (RDCMS) technique.The samples coated microstructure was studied by the X-ray diffraction (XRD) and scanning electron microscope (SEM), and elemental distribution was studied using energy-dispersive X-ray spectroscopy (EDS). To investigate the corrosion behavior of nanostructured TaN coatings, the potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) tests were performed in Hank's physiological solution. The results of different tests revealed that the coating with a content of 17.6% P N2 /P Ar consisted of hexagonal and orthorhombic TaN phases and had denser microstructure and free pores. This coating showed superior corrosion behavior in comparison to the other ones. Also, the corrosion resistance of this coating raised by increasing the time of immersion from 48 to 168 h.

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Section: Eis and Pdp Testsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Studying the in vitro corrosion response of nanostructured TaN coatings in Hank's physiological solution

Babaei

Fattah‐alhosseini

Elmkhah

et al. 2021

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

“…To date, most of the reported studies concerning the implication of grain size on pitting corrosion and passive film behavior are essentially on stainless steels. [2][3][4] A study on the electrochemical behavior based on the grain size variation of AISI 430 ferritic stainless steel has revealed a decrease in both the passive and corrosion current densities in the finer grain specimen against the coarse-grained counterpart. [2] Further, a higher polarization resistance has also been realized in the case of fine-grained specimens, as reported by Fattah-Alhosseini and Vafaeian.…”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10] The passive film on the fine-grained AISI 430 ferritic stainless steel, generated by cyclic voltammetry passivation, is found to be thinner, more defective, and consequently, exhibits poorer resistance against corrosion than the coarse-grained counterpart. [4] From the aforementioned discussion, it is clear that there exists a plethora of ambiguities related to the impact of grain size on the pitting and passive film behavior. This may be related to the synergistic influence of various other microstructural features viz.…”

Section: Introductionmentioning

confidence: 99%

On the role of grain size variation on pitting corrosion and passive film behavior of Alloy 600H

Kaithwas

Bairi

Mozumder

et al. 2023

Materials & Corrosion

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In this work, the effect of grain size variation on the pitting corrosion as well as the passivation behavior of the Alloy 600H has been critically assessed by various electrochemical techniques. The grain size modifications have been achieved by a series of thermal and thermo-mechanical processing. The potentiodynamic polarization study has revealed that the coarse-grained specimens exhibit higher corrosion and pitting resistance than the fine-grained ones. This has been attributed to the greater extent of random high-angle grain boundary (RHAGB) surface area in the fine-grained specimens, which acted as favorable locations for pit initiation. The electrochemical impedance spectroscopy (EIS) result has indicated the formation of more imperfect (nonstoichiometric) passive layers in fine-grained specimens due to the predominant presence of high energy and defective RHAGBs surface. Moreover, the Mott-Schottky analysis has revealed that the fine-grained specimens generate higher defect densities at the interfaces, which leads to passive film instability due to increased mobility of cation interstitial and cation vacancies at the interfaces.

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“… 12 Passivation can be achieved by chemical reactions. 13 Passive layers will have lower ion conduction, lower solubility, higher abrasion resistance, and higher adhesion. 14 The biocompatibility of Co-Cr alloy is associated with high corrosion resistance, resulting from the formation of an internal passive layer on the alloy surface.…”

Section: Introductionmentioning

confidence: 99%

Effect of chemical passivation on corrosion behavior and ion release of a commercial chromium-cobalt alloy

Moslehifard

Ghaffari

Mohammadian-Navid

et al. 2020

J Dent Res Dent Clin Dent Prospects

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Background. Corrosion resistance and ion release of alloys play a crucial role in biomedical applications. The present study aimed to investigate an increase in corrosion resistance and reduction in ion release in a commercial Co-Cr-Mo alloy by the chemical passivation method. Methods. Based on ADA97, 20 samples of Flexicast alloy were cast, surface-polished, and electrolytically passivated at room temperature for 24 h in a sodium sulfate solution. Corrosion and ion release of the alloys before and after passivation were studied in normal saline solution. Corrosion resistance and the ion release rates were measured by the weight loss method and atomic absorption spectroscopy, respectively, before and after passivation after 1, 2, 3, and 4 weeks. The surface morphology of the samples was examined using scanning electron microscopy (SEM). The results were analyzed with Kruskal-Wallis and Mann-Whitney tests using SPSS 20 at a significance level of <0.05. Results. The corrosion rate in the passivated samples was significantly lower than the non-passivated samples at the intervals (1, 2, 3, and 4 weeks) (P<0.05). The passivation of the alloy significantly reduced Co and Cr ion release in the first and fourth weeks, and in the first, second, and fourth weeks, respectively (P<0.05). SEM images revealed localized pitting associated with the corrosion, which was less significant in passivated samples. Conclusion. Chemical passivation of the CR-Co alloy significantly reduced corrosion and ionic release of Cr and Co over time.

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The influence of cyclic voltammetry passivation on the electrochemical behavior of fine and coarse-grained AISI 430 ferritic stainless steel in an alkaline solution

Cited by 33 publications

References 74 publications

Studying the in vitro corrosion response of nanostructured TaN coatings in Hank's physiological solution

Studying the in vitro corrosion response of nanostructured TaN coatings in Hank's physiological solution

On the role of grain size variation on pitting corrosion and passive film behavior of Alloy 600H

Effect of chemical passivation on corrosion behavior and ion release of a commercial chromium-cobalt alloy

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