Corrosion Behaviors of Stainless Steel in High-Temperature Water and Superheated Steam

Maekawa, Tatsuo; Kagawa, M.; Nakajima, Nobuo

doi:10.2320/matertrans1960.9.130

Cited by 28 publications

(11 citation statements)

References 14 publications

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“…They found the corrosion resistance was different above and below the critical point. Ruther et al [14] reported that in SCW, surface preparations that gave a strain-free surface resulted in maximum general corrosion while the surface finishes that resulted in severe cold-work reduced general corrosion. This agrees with the findings in this current study.…”

Section: Discussionmentioning

confidence: 99%

Effect of Surface Modification on Candidate Alloys for Canadian SCWR Fuel Cladding

Li¹,

Liu²,

Zavadil³

et al. 2014

JMMCE

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The Canadian Generation-IV supercritical water reactor (SCWR) requires peak cladding surface temperature of 800˚C for a core outlet temperature of 625˚C. Materials selection for high temperature fuel cladding is becoming one of the major challenging tasks. Austenitic stainless steels with excellent corrosion resistance are often susceptible to stress corrosion cracking upon SCW exposure. Low-Cr steels such as P91 exhibit good high-temperature mechanical properties, but the lack of sufficient Cr content makes this group of alloys corrode too fast. One possible solution is to use coatings or surface modification techniques to improve the surface resistance to corrosion. In this study, we investigated the effect of surface modification on commercial 316L stainless steel. Surface modification by mechanical deformation has marked improvement in corrosion resistance during SCW exposure. Possible mechanisms for such improvement are discussed.

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Section: Discussionmentioning

confidence: 99%

Effect of Surface Modification on Candidate Alloys for Canadian SCWR Fuel Cladding

Li¹,

Liu²,

Zavadil³

et al. 2014

JMMCE

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“…Ziemniak [ 11 ] comes to more diverse conclusions by considering papers of Perge, Robertson, Maekawa et al, Warzee et al, and Guinard et al [ 12 , 13 , 14 , 15 , 16 ]. Electropolished stainless steel in water at temperatures below 350 °C shows better corrosion properties due to simultaneous oxide layer formation (outer layer ferrite or chromite rich and inner layer (chromite rich)), with the latter growing faster at cold worked, energy rich sites.…”

Section: Introductionmentioning

confidence: 99%

Effect of Polishing on Electrochemical Behavior and Passive Layer Composition of Different Stainless Steels

et al. 2020

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In the present paper, the effect of different polishing methods (mechanical and electrochemical) on passive layer chemistry and the corrosion behavior of stainless steels is investigated. It was found that CrNiMo austenites have a substantially better corrosion behavior than CrMnN ones. The nickel is enriched underneath the passive layer, while manganese tends to be enriched in the passive layer. It was also noted that immersion of manganese into an electrolyte preferentially causes its dissolution. It was found that high amounts of chromium (27.4%), molybdenum (3.3%), nickel (29.4%), with the addition of manganese (2.8%) after mechanical grinding, generates a better corrosion resistance than after electrochemical polishing. This is most likely because of the introduction of phosphates and sulfates into its structure, which is known for steels with a high amount of manganese. For highly alloyed CrNiMo steels, which do not contain a high amount of manganese, the addition of phosphates and/or sulphates via the electropolishing process results in a decrease in pitting corrosion resistance, which is also observed for high manganese steels. Electropolished samples show detrimental corrosion properties when compared to mechanically polished samples. This is attributed to substantial amounts of sulfate and phosphate from the electropolishing electrolyte present in the surface of the passive layer.

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“…Han et al suggested that the corrosion rates of nickel‐based alloys and SSs both decreased with the increase of temperature in non‐hydrogenated high temperature water. However, Maekawa et al and Warzee et al studied the corrosion behavior of A304 SS and reported that there was a local maximum of corrosion rate for A304 SS in high temperature water.…”

Section: Introductionmentioning

confidence: 99%

Influence of temperature on electrochemical behavior and oxide film property of Alloy 800 in hydrogenated high temperature water

Wang

Han

2015

Materials & Corrosion

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The effects of temperature on the electrochemical behavior and oxide film property of Alloy 800 in hydrogenated high temperature water are studied using potentiodynamic polarization curves, electrochemical impedance spectra (EIS), scanning electron microscopy (SEM), and X‐ray photoelectron spectroscopy (XPS). The corrosion resistance of Alloy 800 passes through a local minimum at 250 °C. The kinetic controlling step of the growth of oxide films at 200–300 °C changes from the diffusion of ions in aqueous phase to the growth of Cr‐rich barrier layer. A modified model is proposed to explain the effect of temperature on the property of the oxide films on Alloy 800 in hydrogenated high temperature water.

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Corrosion Behaviors of Stainless Steel in High-Temperature Water and Superheated Steam

Cited by 28 publications

References 14 publications

Effect of Surface Modification on Candidate Alloys for Canadian SCWR Fuel Cladding

Effect of Surface Modification on Candidate Alloys for Canadian SCWR Fuel Cladding

Effect of Polishing on Electrochemical Behavior and Passive Layer Composition of Different Stainless Steels

Influence of temperature on electrochemical behavior and oxide film property of Alloy 800 in hydrogenated high temperature water

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