Repassivation behavior of 316L stainless steel in borate buffer solution: Kinetics analysis of anodic dissolution and film formation

Xu, Hui; Sun, Dongbai; Yu, Hongying

doi:10.1016/j.apsusc.2015.09.018

Cited by 30 publications

(6 citation statements)

References 47 publications

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“…This electric field strength was similar to the value measured on Ni in borate buffer pH 8.4 18 and was on the same order of magnitude compared to the electric field strength on other passive materials such as stainless steel, 75,76 Al alloys, 77 and Ti alloys. 78,79 By a simple derivation, the efficiency of the NiO layer growth could be expressed by:…”

Section: Resultssupporting

confidence: 83%

Polarized Neutron Reflectometry of Metal Consumption and Passive Film Growth on Nickel Exposed to an Alkaline Deuterium Oxide (D₂O) Solution

Fritzsche

Burton

et al. 2017

J. Electrochem. Soc.

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Electrochemical behavior of Ni in an alkaline heavy water electrolyte was studied using cyclic voltammetry and polarized neutron reflectometry. Delays in the hydrogen and oxygen evolution reactions on Ni electrodes and slower kinetics of the reactions in heavy water compared to light water were observed. However, in both 0.01 mol/L NaOH light and heavy water solutions, Ni oxidation and passive film formation occurred at the same potential with similar passive current densities indicating a minor isotope effect of deuterium on passive film formation and growth. Polarized neutron reflectometry detected a passive film growth coefficient of 11.5 ± 1.1 Å/V. The Ni consumption coefficient was determined to be 7.3 ± 1.5 Å/V. Ni oxidation and passive film growth occurred mostly during the transient period after the applied potential increase but was negligible at the steady state. The electric field strength across the passive film was 8 × 10 6 V/cm. The Pilling-Bedworth ratio of the passive film during potentiostatic growth was close to the value of NiO grown on bulk Ni. This work demonstrated the capability of neutron reflectometry in the study of passive films on metals and alloys.

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Section: Resultssupporting

confidence: 83%

Polarized Neutron Reflectometry of Metal Consumption and Passive Film Growth on Nickel Exposed to an Alkaline Deuterium Oxide (D₂O) Solution

Fritzsche

Burton

et al. 2017

J. Electrochem. Soc.

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“…The variation trends of the total boron concentration and the pH during the 28 days of experiment are presented in Figure . It was observed that all solutions sharply approached an alkaline state (pH 8.2–8.6) with an increase in boron concentration in the early stage of experiment (0–9 days), because of the buffering characteristic of the boron solution. , The pH values of SRCW then were not significantly changed in the middle and later stages of the experiment (10–28 days). The buffering by the low-boron-concentration solution reduced the risk of carbon steel corrosion in acidic environments.…”

Section: Resultsmentioning

confidence: 95%

Effect of pH on the Passivation of Carbon Steel by Sodium Borosilicate Controlled-Release Inhibitor in Simulated Recirculating Cooling Water

Cui

Yuan

et al. 2017

Ind. Eng. Chem. Res.

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A sodium borosilicate controlled-release inhibitor has been prepared via calcination for suppressing carbon steel corrosion in simulated recirculating cooling water (SRCW). The synthesized inhibitor was mainly composed of B2O3 and SiO2, coupling with small quantities of NaB5O6(OH)4·3H2O and NaB5O8·5H2O crystals. The total boron concentration gradually increased to 250 mg L–1 during the 28 days of release (2 g inhibitor in 500 mL SRCW) at 50 °C. A higher controlled-released rate existed in acidic environments (pH 5) than in neutral environments (pH 7) and alkaline environments (pH 9). The potentiodynamic polarization and electrochemical impedance spectroscopy results indicated that the inhibitor showed a better anticorrosion performance in neutral and alkaline environments than in acidic environments. In addition, a passive film with a Fe–O–B structure formed on the carbon steel surface to prevent the attack of the corrosive ions. A passivation-pitting-repassivation process was detected in the passive film by electrochemical noise, which demonstrated that the passive film exhibited a self-healing capacity. Moreover, a potential corrosion risk under the film was detected under the passive film in alkaline environment after 21 days of immersion. According to the experiment results and the analysis results of the point defect model, we believed that the anticorrosion performance of the sodium borosilicate inhibitor was in the following order: pH 7 > pH 9 > pH 5.

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“…Potentiostatic polarization is the performance of long time stability for repassivation behavior of titanium after removing original oxide film, which has great influence on the development of local corrosion and corrosion resistance . The current density is pretty large at the initial stage (∼millisecond), decreases exponentially with time (∼second), and then keeps the state of dynamic equilibrium for a long time. , Therefore, after 12 h potentiostatic polarization, the effects of applied potentials can be reflected by the characteristics of the passive film formed on titanium, including composition, thickness, chemical state, and electronic and local fine structure.…”

Section: Resultsmentioning

confidence: 99%

Local Fine Structural Insight into Mechanism of Electrochemical Passivation of Titanium

Wang

et al. 2016

ACS Appl. Mater. Interfaces

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Electrochemically formed passive film on titanium in 1.0 M H2SO4 solution and its thickness, composition, chemical state, and local fine structure are examined by Auger electron spectroscopy (AES), X-ray photoelectron spectroscopy (XPS), and X-ray absorption fine structure. AES analysis reveals that the thickness and composition of oxide film are proportional to the reciprocal of current density in potentiodynamic polarization. XPS depth profiles of the chemical states of titanium exhibit the coexistence of various valences cations in the surface. Quantitative X-ray absorption near edge structure analysis of the local electronic structure of the topmost surface (∼5.0 nm) shows that the ratio of [TiO2]/[Ti2O3] is consistent with that of passivation/dissolution of electrochemical activity. Theoretical calculation and analysis of extended X-ray absorption fine structure spectra at Ti K-edge indicate that both the structures of passivation and dissolution are distorted caused by the appearance of two different sites of Ti-O and Ti-Ti. And the bound water in the topmost surface plays a vital role in structural disorder confirmed by XPS. Overall, the increase of average Ti-O coordination causes the electrochemical passivation, and the dissolution is due to the decrease of average Ti-Ti coordination. The structural variations of passivation in coordination number and interatomic distance are in good agreement with the prediction of point defect model.

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Repassivation behavior of 316L stainless steel in borate buffer solution: Kinetics analysis of anodic dissolution and film formation

Cited by 30 publications

References 47 publications

Polarized Neutron Reflectometry of Metal Consumption and Passive Film Growth on Nickel Exposed to an Alkaline Deuterium Oxide (D₂O) Solution

Polarized Neutron Reflectometry of Metal Consumption and Passive Film Growth on Nickel Exposed to an Alkaline Deuterium Oxide (D₂O) Solution

Effect of pH on the Passivation of Carbon Steel by Sodium Borosilicate Controlled-Release Inhibitor in Simulated Recirculating Cooling Water

Local Fine Structural Insight into Mechanism of Electrochemical Passivation of Titanium

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Repassivation behavior of 316L stainless steel in borate buffer solution: Kinetics analysis of anodic dissolution and film formation

Cited by 30 publications

References 47 publications

Polarized Neutron Reflectometry of Metal Consumption and Passive Film Growth on Nickel Exposed to an Alkaline Deuterium Oxide (D2O) Solution

Polarized Neutron Reflectometry of Metal Consumption and Passive Film Growth on Nickel Exposed to an Alkaline Deuterium Oxide (D2O) Solution

Effect of pH on the Passivation of Carbon Steel by Sodium Borosilicate Controlled-Release Inhibitor in Simulated Recirculating Cooling Water

Local Fine Structural Insight into Mechanism of Electrochemical Passivation of Titanium

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Product

Resources

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Polarized Neutron Reflectometry of Metal Consumption and Passive Film Growth on Nickel Exposed to an Alkaline Deuterium Oxide (D₂O) Solution

Polarized Neutron Reflectometry of Metal Consumption and Passive Film Growth on Nickel Exposed to an Alkaline Deuterium Oxide (D₂O) Solution