Pitting corrosion of Cu–Zr metallic glasses in hydrochloric acid solutions

Lu, Haibo; Zhang, Lai-Chang; Gebert, A.; Schultz, L.

doi:10.1016/j.jallcom.2007.08.023

Cited by 86 publications

(44 citation statements)

References 28 publications

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“…The average diameter of pits increases to 11 μm under a 0.02-T magnetic field. In addition, the pit morphology is similar to that of the Cu-Zr metallic glasses in hydrochloric acid solutions [25]. Furthermore, the pit mouths exhibit layers on their rims, which gives a stepped appearance and results in the deep pits.…”

Section: Anodic Polarization Curves Of Fe 78 Si 9 B 13 Glassy Alloy Imentioning

confidence: 56%

Non-monotonic influence of a magnetic field on the electrochemical behavior of Fe78Si9B13 glassy alloy in NaOH and NaCl solutions

Zhang

Li²,

Pang³

et al. 2014

Int J Miner Metall Mater

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Abstract:The corrosion behavior and microstructure of Fe 78 Si 9 B 13 glassy alloy in NaOH and NaCl solutions under a 0.02-T magnetic field were investigated through electrochemical testing and scanning electron microscopy (SEM). The current-density prepeak (PP) in the anodic polarization curves in low-concentration NaOH solutions (classified as type I) tends to disappear when the NaOH concentration is increased to 0.4 mol/L and the magnetic field is applied. Under the magnetic field, the height of the second current-density peak is increased in low-concentration NaOH solutions (type I) but decreased in high-concentration NaOH solutions (type II). The non-monotonic effect of the magnetic field was similarly observed in the case of polarization curves of samples measured in NaCl solutions. Ring-like corroded patterns and round pits are easily formed under the magnetic field in NaOH and NaCl solutions. These experimental results were discussed in terms of the magnetohydrodynamic (MHD) effect.

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Section: Anodic Polarization Curves Of Fe 78 Si 9 B 13 Glassy Alloy Imentioning

confidence: 56%

Non-monotonic influence of a magnetic field on the electrochemical behavior of Fe78Si9B13 glassy alloy in NaOH and NaCl solutions

Zhang

Li²,

Pang³

et al. 2014

Int J Miner Metall Mater

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“…This gives rise to rapid pit growth and low repassivation. Their pitting susceptibility and repassivation ability can be significantly influenced by alloying elements [24][25][26][27][28][29]. In a recent study, both these properties were found to depend strongly on Cu concentration [30].…”

Section: Corrosion Aspectsmentioning

confidence: 99%

Stress-Corrosion Interactions in Zr-Based Bulk Metallic Glasses

Gostin

Eigel

Grell

et al. 2015

Metals

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Stress-corrosion interactions in materials may lead to early unpredictable catastrophic failure of structural parts, which can have dramatic effects. In Zr-based bulk metallic glasses, such interactions are particularly important as these have very high yield strength, limited ductility, and are relatively susceptible to localized corrosion in halide-containing aqueous environments. Relevant features of the mechanical and corrosion behavior of Zr-based bulk metallic glasses are described, and an account of knowledge regarding corrosion-deformation interactions gathered from ex situ experimental procedures is provided. Subsequently the literature on key phenomena including hydrogen damage, stress corrosion cracking, and corrosion fatigue is reviewed. Critical factors for such phenomena will be highlighted. The review also presents an outlook for the topic.

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“…For a-Zr 100ÀX Cu X (X ¼ 40, 50 and 60) alloys in HCl solutions, it was reported that adsorption of Cl À at weak points of the surfaces induced the selective dissolution of less noble Zr, while Cu remained around the attacked regions and rearranged under opencircuit condition or low anodic polarization. 4) At higher anodic potentials, the formation of CuCl films with a highly porous structure was observed. A galvanic coupling effect between the Cu-enriched pit regions and Zr-enriched regions at the alloy surface additionally triggered the pit propagation in depth and the pits spread over the alloy.…”

Section: Introductionmentioning

confidence: 99%

Dissolved-Oxygen-Induced Intensive Pitting Corrosion of Amorphous ZrCu Alloys in Thin NaCl Solutions

et al. 2011

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Intensive pitting corrosion of amorphous (a-) Zr 55 Cu 45 and a-Zr 50 Cu 50 were observed by immersion in 0.2-200 mM NaCl solutions open to air at room temperature. The decreased corrosion rate in Ar-purged NaCl solution and no corrosion in ultrapure water open to air suggested that dissolved O 2 and Cl À played an important role on the corrosion of the ZrCu-base amorphous alloys. The open-circuit potential showed a negative shift with increasing the NaCl concentration from 0.2 to 200 mM like that of pure Cu. These observations suggest that the corrosion of the ZrCu-base amorphous alloys in the NaCl solutions was triggered by Cu dissolution which was induced by the reduction of dissolved O 2 . The dissolution of Cu and Zr self-catalytically progressed by the local concentration of Cl À and hence the corrosion pits and holes were intensively formed even at the thinner NaCl concentrations.

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Pitting corrosion of Cu–Zr metallic glasses in hydrochloric acid solutions

Cited by 86 publications

References 28 publications

Non-monotonic influence of a magnetic field on the electrochemical behavior of Fe78Si9B13 glassy alloy in NaOH and NaCl solutions

Non-monotonic influence of a magnetic field on the electrochemical behavior of Fe78Si9B13 glassy alloy in NaOH and NaCl solutions

Stress-Corrosion Interactions in Zr-Based Bulk Metallic Glasses

Dissolved-Oxygen-Induced Intensive Pitting Corrosion of Amorphous ZrCu Alloys in Thin NaCl Solutions

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