Pourbaix Diagrams for the Ternary System of Iron-Chromium-Nickel

Beverskog, B.; Puigdomènech, I.

doi:10.5006/1.3283945

Cited by 157 publications

(40 citation statements)

References 16 publications

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“…23,24) Thermodynamically, the most stable product for SUS316 is FeCr 2 O 4 . 25) These considerations are consistent with the present results, which show that the inner layer consists mainly of iron and chromium spinels.…”

Section: Oxide Film Characterizationsupporting

confidence: 82%

Microstructural Characterization of SCC Crack Tip and Oxide Film for SUS 316 Stainless Steel in Simulated PWR Primary Water at 320.DEG.C.

Terachi¹,

Fujii²,

Arioka³

2005

J. Nucl. Sci. Technol.

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Recent studies on stress corrosion cracking (SCC) behaviors of austenitic stainless steels in hydrogenated hightemperature water show that low potential SCC (LPSCC) can occur on cold-worked SUS 316 stainless steel (hereinafter, 316SS). In this study, oxide films and crack tips on cold-worked 316SS exposed to hydrogenated high-temperature water were characterized using analytical transmission electron microscopy (ATEM), grazing incidence X-ray diffraction (GIXRD) and Auger electron spectroscopy (AES) in order to study the corrosion and SCC behaviors of these films and crack tips. A double layer structure was identified for the oxide film after a constant extension rate tensile (CERT) test. The outer layer was composed of large particles (0.2-3 mm) of Fe 3 O 4 and the inner layer consisted mainly of fine particles ($10 nm) of FeCr 2 O 4 . In addition, nickel enrichment was identified at the metal/oxide interface. Particles of Fe 3 O 4 were also identified on the crack walls. These results indicate that the same electrochemical reactions had occurred inside and outside the crack. The crack tip area was filled with corrosion products of a chromium-rich oxide. In addition, nickel enrichment was observed at the crack tip. The formation of the nickel-enriched phase indicates that a selective dissolution reaction of iron and chromium occurred at the front of the LPSCC crack.

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Section: Oxide Film Characterizationsupporting

confidence: 82%

Microstructural Characterization of SCC Crack Tip and Oxide Film for SUS 316 Stainless Steel in Simulated PWR Primary Water at 320.DEG.C.

Terachi¹,

Fujii²,

Arioka³

2005

J. Nucl. Sci. Technol.

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“…Apparently, the preformed Cr-rich film on S400(<5 ppb) lost Cr when it was further immersed under high DO concentration. That is because Cr tends to be dissolved into solution as CrO 4 À2 under strongly oxidizing environment, which has been predicted from the high temperature Pourbaix diagrams [30,35]. Some previous work [36,37] has also reported similar results.…”

Section: Discussionsupporting

confidence: 71%

Influence of dissolved oxygen concentration on the oxide film formed on Alloy 690 in high temperature water

Kuang

Han

2013

Corrosion Science

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“…Thermodynamic calculations [1] indicate a possibility of copper corrosion in highly saline water environments of the anoxic type (concentration of oxygen <10 -6 mol l -1 [2]). Thermodynamic calculations [1] indicate a possibility of copper corrosion in highly saline water environments of the anoxic type (concentration of oxygen <10 -6 mol l -1 [2]).…”

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confidence: 99%

Corrosion of Copper in 1 M NaCl under Strictly Anoxic Conditions

et al. 2003

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%675$&7The corrosion of copper in 1 M NaCl has been investigated at room temperature and at 80 o C by an on-line resistance probe, solution analysis of dissolved copper and weight loss measurements. At room temperature, corrosion of the copper as indicated by an increase of the probe resistance has been detected during the first 60-80 h of exposure. After the corrosion potential has reached the immunity region of Cu, a decrease in the resistance of the sensor is observed, probably due to redeposition of Cu from the solution. It can be concluded that the corrosion of copper at room temperature virtually stops after 60-80 h due to the anoxic conditions established in the experiments. The similarity in the trends of the corrosion and redox potential during exposure seems to indicate that Cu(II) contained in the native oxide on Cu and/or formed by homogeneous oxidation of Cu(I) during the initial oxic period of exposure acts as a redox-agent determining the chemical conditions in the closed system.

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Pourbaix Diagrams for the Ternary System of Iron-Chromium-Nickel

Cited by 157 publications

References 16 publications

Microstructural Characterization of SCC Crack Tip and Oxide Film for SUS 316 Stainless Steel in Simulated PWR Primary Water at 320.DEG.C.

Microstructural Characterization of SCC Crack Tip and Oxide Film for SUS 316 Stainless Steel in Simulated PWR Primary Water at 320.DEG.C.

Influence of dissolved oxygen concentration on the oxide film formed on Alloy 690 in high temperature water

Corrosion of Copper in 1 M NaCl under Strictly Anoxic Conditions

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