Effects of Hydrogen Peroxide on Corrosion of Stainless Steel, (I)

Satoh, Tsuyoshi; Uchida, Shunsuke; Sugama, Junichi; Yamashiro, Naoya; Hirose, Takuya; Morishima, Yusuke; Satoh, Y.; Iinuma, K.

doi:10.1080/18811248.2004.9715524

Cited by 15 publications

(7 citation statements)

References 6 publications

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“…Therefore, the addition of hydrogen peroxide to the saline solution was used to mimic the enhanced corrosion environment in both cases. It should be noted that in the presence of H 2 O 2 and Cl − , there is an enhanced corrosion attack, causing more damage due to the appearance of the intergranular stress corrosion cracking in austenitic steel under tensile stress [64][65][66].…”

Section: Introductionmentioning

confidence: 99%

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

et al. 2020

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The reactive cathodic arc deposition technique was used to produce Ti nitride and oxynitride coatings on 304 stainless steel substrates (SS). Both mono (SS/TiN, SS/TiNO) and bilayer coatings (SS/TiN/TiNO and SS/TiNO/TiN) were investigated in terms of elemental and phase composition, microstructure, grain size, morphology, and roughness. The corrosion behavior in a solution consisting of 0.10 M NaCl + 1.96 M H2O2 was evaluated, aiming for biomedical applications. The results showed that the coatings were compact, homogeneously deposited on the substrate, and displaying rough surfaces. The XRD analysis indicated that both mono and bilayer coatings showed only cubic phases with (111) and (222) preferred orientations. The highest crystallinity was shown by the SS/TiN coating, as indicated also by the largest grain size of 23.8 nm, which progressively decreased to 16.3 nm for the SS/TiNO monolayer. The oxynitride layers exhibited the best in vitro corrosion resistance either as a monolayer or as a top layer in the bilayer structure, making them a good candidate for implant applications.

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Section: Introductionmentioning

confidence: 99%

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

et al. 2020

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“…Test specimens were placed in the autoclave. However, since it is known that H 2 O 2 is easily decomposed into O 2 in high-temperature water (5), a polytetrafluoroethylene (PTFE) liner was installed in the autoclave to avoid such decomposition (6). Water was periodically sampled from the autoclave through a cooled sampling line.…”

Section: Methodsmentioning

confidence: 99%

In Situ Observation for the Reaction of Hydrogen Peroxide in High Temperature Water Utilizing Electrochemical Impedance Spectroscopy

Satoh¹,

Kato²,

Yamamoto³

et al. 2012

ECS Trans.

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Direct observation of the reaction of H 2 O 2 at the surface of stainless steel was performed by electrochemical impedance spectroscopy (EIS) in high-purity water at 288 °C. From this, the corrosive conditions and behavior of stainless steel in hightemperature and high-purity water containing H 2 O 2 were determined. The results obtained could be summarized as follows: 1) The EIS data were directly measured in high-temperature water without electrolyte injection.2) The conductivity of the high-temperature water at 288 °C, calculated by R sol , was 8.3 × 10 -6 S/cm. 3) R p was 9.0 × 10 3 ohm·cm 2 for 100 ppb of injected H 2 O 2 , and the estimated corrosion rate was about 30 μm/year. 4) The reciprocal of the polarization resistance had a linear relationship with the H 2 O 2 concentration, indicating that the corrosion current is determined by the cathodic reaction of H 2 O 2 . 5) The estimated D H2O2 was 1.5 × 10 -4 cm 2 /s. IntroductionGeneral corrosion of structural materials is a particularly important issue to be addressed for the optimization of water chemistry control in nuclear power plants (1). Oxygen (O 2 ) and hydrogen peroxide (H 2 O 2 ) co-exist as oxidants produced by radiolysis of high-purity and high-temperature water, as found in boiling water reactors (BWRs) (2). Many electrochemical approaches have been adopted to evaluate the corrosion mechanism of stainless steel in high-temperature water that contains O 2 and an electrolyte to increase its conductivity (3,4). The reactor coolant is maintained in a state of high purity by water chemistry control, and H 2 O 2 (oxidant) formed by water radiolysis exists in the reactor coolant of BWRs. Therefore, knowledge of the electrochemical behavior of stainless steel in high-temperature water can be gathered by simulating the corrosive environment in a BWR reactor coolant (i.e., a high-purity environment with H 2 O 2 ). In this manner, we can evaluate the mechanism of corrosion of stainless steel in BWRs.In this study, the electrochemical reaction of H 2 O 2 at the surface of stainless steel in high-purity water at 288 °C was observed by electrochemical impedance spectroscopy (EIS). From this, the corrosive conditions and behavior of stainless steel in hightemperature and high-purity water containing H 2 O 2 were determined.

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“…In order to validate the ECP calculation model, the calculated results were compared with the measured results for the BWR simulation loop, where H 2 O 2 was injected to change corrosive conditions [6,15,16]. The comparison of calculated and measured ECPs is shown in Figure 6.…”

Section: Effects Of Oxide Layer Thickness On Ecpmentioning

confidence: 99%

An empirical model for the corrosion of stainless steel in BWR primary coolant

Uchida

Hanawa

Naitoh

et al. 2017

Corrosion Engineering, Science and Technology

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A model to evaluate the electrochemical corrosion potential (ECP) and corrosion rate of stainless steel in neutral water was developed by coupling a static electrochemical analysis and a dynamic oxide layer growth analysis. ECP is much affected not only by water chemistry conditions but also by the oxide layers that develop on the metal surface. As an example application of the model, the effects of oxide layers on ECPs were calculated and a good agreement with the measured results was shown. Major conclusions obtained using the coupled model were as follows:(1) The effects of H 2 O 2 and O 2 concentrations on ECP were successfully explained as the effects of oxide layer growth.(2) Decreases in ECP due to neutron exposure were explained well by radiation-induced diffusion in the oxide layers.(3) Hysteresis of ECP was well explained by the coupled model.

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Effects of Hydrogen Peroxide on Corrosion of Stainless Steel, (I)

Cited by 15 publications

References 6 publications

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

In Situ Observation for the Reaction of Hydrogen Peroxide in High Temperature Water Utilizing Electrochemical Impedance Spectroscopy

An empirical model for the corrosion of stainless steel in BWR primary coolant

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