The repassivation kinetics study of Alloy 800 in high-temperature pressurized water

Wang, Jiazhen; Han, En‐Hou; Wang, Jianqiu

doi:10.1016/j.elecom.2015.08.017

Cited by 14 publications

(2 citation statements)

References 21 publications

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“…Second, upon rupture or breakdown of the oxide film, it will reform, i.e. re-passivate [24][25][26][27]. Hence, third, to accumulate permanent 'damage' towards EAC initiation, the oxide film will need to rupture repeatedly.…”

Section: The Enginit Modelmentioning

confidence: 99%

Analysis of environmentally assisted crack initiation of Alloy 182 in simulated light water reactor primary water with the engineering initiation model EngInit

Vankeerberghen

Bosch

2021

Corrosion Engineering, Science and Technology

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Environmentally assisted cracking of nickel-base alloys has been observed in the primary coolant of light water reactors and is known as primary water stress corrosion cracking. In respect of crack growth, disposition curves are available for integrity analysis. However, in respect of initiation, there is no generally accepted approach. Here, a methodology is proposed to derive a usage factor towards initiation. Reaching a usage factor of 1 means that initiation is incipient. How far one is away from a usage factor of 1 tells us about the margin towards initiation. The key function in the approach is the rate at which the usage factor increases. It is proposed to be a function of strain rate and stress. Data from constant extension rate tests with flat, tapered tensile specimens have been used to parameterise the model. The parameterised model is subsequently used to predict initiation in a tensile-loaded, large-notch specimen.

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Section: The Enginit Modelmentioning

confidence: 99%

Analysis of environmentally assisted crack initiation of Alloy 182 in simulated light water reactor primary water with the engineering initiation model EngInit

Vankeerberghen

Bosch

2021

Corrosion Engineering, Science and Technology

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“…It is reasonable to assume that in this case, the electrostatic cation adsorption is responsible for the good protective properties of the compound. However, at a lower concentration of natural inhibitor or np-natural inhibitor the E a value decreases, which indicates chemisorption 35,36 . However, at higher concentrations (0.99 and 1.32 g/L), a slight increase in E a is observed due to minute differences in the inhibition efficiency with an increase in temperature ( Table 3).…”

Section: Weight Loss Measurementsmentioning

confidence: 99%

Improvement in Corrosion Protection of Zinc by A Natural Inhibitor Incorporated with Zinc Oxide Nanoparticles in an Acidic Medium Evaluated using Gravimetric Measurement, Electrochemical Method and Atomic Force Microscopy

Parekh¹,

Ladha²,

Wadhwani³

et al. 2016

Orient. J. Chem

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In this study, the improvement in the corrosion inhibition efficiency of a natural inhibitor (coriander seed extract) incorporated with zinc oxide nanoparticles (np-natural inhibitor) was investigated using the gravimetric method and electrochemical methods. The weight loss method indicated that a 25.7% and 57.1% inhibition efficiency (I%) were found when using 0.66 g/L of natural inhibitor and np-natural inhibitor, respectively. Moreover, as the temperature increases, the I% also increases for both inhibitors, suggesting a chemisorption mechanism. EIS revealed that the polarization resistance value (R p ) of np-natural inhibitor is greater than that of the natural inhibitor, indicated that np-natural inhibitor was more resistive. The Temkin adsorption isotherm gave the best fit for both the inhibitors. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) showed the surface morphology of the zinc metal in the absence and presence of both the inhibitors.

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Effect of pH on corrosion behavior of 316L stainless steel in hydrogenated high temperature water

Wang

Ming

et al. 2017

Materials & Corrosion

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The effect of pH on the corrosion behavior of 316L stainless steel (SS) was investigated. The film resistance decreases and the corrosion current density increases as the pH rises from 6.42 to 7.52 for 316L SS. The corrosion rate of 316L SS increases with increasing pH in hydrogenated high temperature water at 300 °C. Higher pH reduces the stability of the oxide films and accelerates the dissolution process of the oxides. It is recommended that a proper lower pH in hydrogenated high temperature water can mitigate the corrosion of structural materials.

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The repassivation kinetics study of Alloy 800 in high-temperature pressurized water

Cited by 14 publications

References 21 publications

Analysis of environmentally assisted crack initiation of Alloy 182 in simulated light water reactor primary water with the engineering initiation model EngInit

Analysis of environmentally assisted crack initiation of Alloy 182 in simulated light water reactor primary water with the engineering initiation model EngInit

Improvement in Corrosion Protection of Zinc by A Natural Inhibitor Incorporated with Zinc Oxide Nanoparticles in an Acidic Medium Evaluated using Gravimetric Measurement, Electrochemical Method and Atomic Force Microscopy

Effect of pH on corrosion behavior of 316L stainless steel in hydrogenated high temperature water

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