Electrochemical and XPS studies and the potential scan rate dependent pitting corrosion behavior of Zircaloy-2 in 5% NaCl solution

Satpati, Ashis Kumar; Phadnis, S. V.; Sundaresan, R.

doi:10.1016/j.corsci.2004.08.004

Cited by 18 publications

(13 citation statements)

References 36 publications

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“…They both exhibit a capacitive behavior of the film/oxide. It can be noted that the R p value for nonoxidized Zircaloy-4 is in keeping with previous study results obtained for Zircaloy-2 in an aqueous NaCl solution [29]. For the pre-oxidized specimen, R p is about 10 8 X cm 2 , which is 100 times higher than before and which confirms the highly protective character of the thermal oxide.…”

Section: Localization Of Dissolution At the Crack Tipsupporting

confidence: 90%

“…It is reversely proportional to C and depends on the dielectric constant of the oxide film ( Zr ¼ 23 for zirconia [31]), on free space permittivity ( 0 = 8.85 Â 10 À14 F cm À1 ) and on the active area of the specimen (surface A v in contact with the electrolyte) [29]. This obtained oxide thickness is a little smaller than predicted [20] but remains in the predicted order of magnitude, which is satisfactory considering the asymptotic identification method employed.…”

Section: Localization Of Dissolution At the Crack Tipmentioning

confidence: 99%

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Methodology for a mechano-electrochemical evaluation of the coupling at the crack tip. Application of halide-induced Stress Corrosion Cracking of Zircaloy-4

et al. 2015

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a b s t r a c tIn order to evaluate the relative contribution of both mechanical and electrochemical processes at the crack tip during Stress Corrosion Cracking propagation, an original combination of controlled pre-cracking followed by thermal pre-oxidation of SCC specimens was developed. It allowed localizing dissolution at the crack tip for Zircaloy-4 tested in halide solutions under potentiostatic polarization. Digital Image Correlation and electrochemical methods were then carried out to study correlations between the stress intensity factor, the crack length and the measurements of dissolution current.

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Section: Localization Of Dissolution At the Crack Tipsupporting

confidence: 90%

Section: Localization Of Dissolution At the Crack Tipmentioning

confidence: 99%

Methodology for a mechano-electrochemical evaluation of the coupling at the crack tip. Application of halide-induced Stress Corrosion Cracking of Zircaloy-4

et al. 2015

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“…46 The passive film was easily attacked due to the Cl À migration toward and into the oxide film, which caused pitting. 15 Zr-Mo alloys in this study exhibited better corrosion resistance than pure Zr. It was previously proved that the corrosion resistance of Ti-Mo alloys was improved with the addition of Mo, which was attributed to the passive film formation of mixed TiO 2 and MoO 3 oxides.…”

Section: Discussionmentioning

confidence: 88%

“…13,14 However, the passive film is not very stable and pitting corrosion easily occurs for Zr and Zr alloys in chloride medium. 14,15 It was suggested that their corrosion resistance would be further improved by alloying 16,17 or surface treatment. 18,19 The oxinium (surface oxidized Zr-2.5Nb alloy) has been commercially used as knee and hip femoral heads in total joint arthroplasty owing to its superior wear resistance.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, mechanical property, corrosion behavior, and in vitro biocompatibility of Zr–Mo alloys

et al. 2012

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In this study, the microstructure, mechanical properties, corrosion behaviors, and in vitro biocompatibility of Zr-Mo alloys as a function of Mo content after solution treatment were systemically investigated to assess their potential use in biomedical application. The experimental results indicated that Zr-1Mo alloy mainly consisted of an acicular structure of a 0 phase, while x phase formed in Zr-3Mo alloy. InZr-5Mo alloy, retained b phase and a small amount of precipitated a phase were observed. Only the retained b phase was obtained in Zr-10Mo alloy. Zr-1Mo alloy exhibited the greatest hardness, bending strength, and modulus among all experimental Zr-Mo alloys, while b phase Zr-10Mo alloy had a low modulus.

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“…In each case, it was confirmed by a laser microscope observation that there was no obvious localized corrosion caused by the galvanic coupling. Regarding pitting, no types of reported pitting [24] were found on the specimens. Also, weights of all specimens were measured after the corrosion test and it was confirmed that none had any weight loss.…”

Section: Corrosion Testmentioning

confidence: 57%

Effects of seawater components on radiolysis of water at elevated temperature and subsequent integrity of fuel materials

Wada

Tachibana

Watanabe

et al. 2015

Journal of Nuclear Science and Technology

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Effects of seawater components on radiolysis of water at elevated temperature have been studied with a radiolysis model and a corrosion test under gamma-ray irradiation conditions to evaluate the subsequent influence on integrity of fuel materials used in an advanced boiling water reactor. In 2011, seawater flowed into the nuclear power plant system of the Hamaoka Nuclear Power Station Reactor No. 5 during the plant shutdown operation. The reactor water temperature was 250 • C and its maximum Cl − concentration was ca. 450 ppm when seawater was mixed with reactor water. The radiolysis model predicted that the main radiolytic species were hydrogen, oxygen and hydrogen peroxide. Concentrations of radiolytic products originating from Cl − and other seawater components were found to be rather low. The dominant product among them was ClO 3 − and its concentration was found to be below 0.01 ppm for a 10 5 s irradiation period. No significant corrosion of zircaloy-2 and 316L stainless steel was found in the corrosion test. These results led to the conclusion that the harmful influence of radiolytic products originating from seawater components on integrity of fuel materials must be smaller than that of Cl − which is the main ionic species in seawater.

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Electrochemical and XPS studies and the potential scan rate dependent pitting corrosion behavior of Zircaloy-2 in 5% NaCl solution

Cited by 18 publications

References 36 publications

Methodology for a mechano-electrochemical evaluation of the coupling at the crack tip. Application of halide-induced Stress Corrosion Cracking of Zircaloy-4

Methodology for a mechano-electrochemical evaluation of the coupling at the crack tip. Application of halide-induced Stress Corrosion Cracking of Zircaloy-4

Microstructure, mechanical property, corrosion behavior, and in vitro biocompatibility of Zr–Mo alloys

Effects of seawater components on radiolysis of water at elevated temperature and subsequent integrity of fuel materials

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