In situ observation of pitting corrosion of the Zr50Cu40Al10 bulk metallic glass

Green, B.A.; Steward, R.V.; Kim, I.; Choi, Chang Kyoung; Liaw, Peter K.; Kihm, Kenneth D.; Yokoyama, Yoshihiko

doi:10.1016/j.intermet.2008.12.011

Cited by 33 publications

(8 citation statements)

References 11 publications

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“…The hemispherical shape and the occluded condition suggest that early pits on Zr-Cu-based metallic glasses grow under mass transport control. 39,[45][46][47] If the pits are allowed to grow further, either by simply keeping the sample immersed, 9,40,42 or by increasing 3,4,7,19,48,49 or decreasing polarization (performed in this work) once E P is reached, their morphology becomes more complex. They develop an irregular shape with deep holes and often a porous rim.…”

Section: Discussionmentioning

confidence: 99%

“…[2][3][4][5][6] At the same time, however, they are quite susceptible to pitting corrosion in halide-containing environments. 2,4,5,[7][8][9][10][11] Alloying elements may have a significant influence on both their passivation ability and their pitting susceptibility. 6,7,[12][13][14][15][16] A clear understanding of those alloying effects is necessary for the design of new Zr-based BMGs with improved pitting corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

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Comparing the pitting corrosion behavior of prominent Zr-based bulk metallic glasses

et al. 2014

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Five well-known Zr-based alloys of the systems Zr-Cu-Al-(Ni-Nb, Ni-Ti, Ag) (Cu 5 15.4-36 at.%) with the highest glass-forming ability were comparatively analyzed regarding their pitting corrosion resistance and repassivation ability in a chloride-containing solution. Potentiodynamic polarization measurements were conducted in the neutral 0.01 M Na 2 SO 4 1 0.1 M NaCl electrolyte and local corrosion damages were subsequently investigated with high resolution scanning electron microscopy (HR-SEM) coupled with energy dispersive x-ray spectroscopy (EDX). Both pitting and repassivation potential correlate with the Cu concentration, i.e., those potentials decrease with increasing Cu content. Pit morphology is not composition dependent: while initially hemispherical pits then develop an irregular shape and a porous rim. Corrosion products are rich in Cu, O, and often Cl species. A combination of low Cu and high Nb or Ti contents is most beneficial for a high pitting resistance of Zr-based bulk metallic glasses. The bulk glassy Zr 57 Cu 15.4 Al 10 Ni 12.6 Nb 5 (Vit 106) and Zr 52.5 Cu 17.9 Al 10 Ni 14.6 Ti 5 (Vit 105) alloys exhibit the highest pitting resistance.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparing the pitting corrosion behavior of prominent Zr-based bulk metallic glasses

et al. 2014

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“…The size of corrosion pit is less than 50 μm in the PBS solution [99], and the pits are distributed inhomogeneous on the surface of Zr-based metallic glass in NaCl solution [100]. The formation of pits is attributed from the broken of the passive film or irregular microstructure on the surface [101]. Jiang and coworkers [102] found that almost all pits were passed through by shear bands for as-cast sample, while the pit was distributed randomly after annealing.…”

Section: Pitting Corrosion Of Metallic Glassesmentioning

confidence: 99%

Corrosion Resistance and Electrocatalytic Properties of Metallic Glasses

Wang¹

2016

Metallic Glasses - Formation and Properties

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Metallic glasses exhibit excellent corrosion resistance and electrocatalytic properties, and present extensive potential applications as anticorrosion, antiwearing, and catalysis materials in many industries. The effects of minor alloying element, microstructure, and service environment on the corrosion resistance, pitting corrosion, and electrocatalytic efficiency of metallic glasses are reviewed. Some scarcities in corrosion behaviors, pitting mechanism, and eletrocatalytic reactive activity for hydrogen are discussed. It is hoped that the overview is beneficial for some researcher paying attention to metallic glasses.

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“…Bulk metallic glasses (BMGs) have been attracting great attention over the past several years due to the good corrosion resistance and unique mechanical properties [1][2][3]. Most of these superior properties of the BMGs are due to their unique microstructural features [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Effects of annealing on the microstructure, corrosion resistance, and mechanical properties of RE65Co25Al10 (RE=Ce, La, Pr, Sm, and Gd) bulk metallic glasses

Zhou

Xing

Sun

et al. 2015

Materials Science and Engineering: A

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In situ observation of pitting corrosion of the Zr50Cu40Al10 bulk metallic glass

Cited by 33 publications

References 11 publications

Comparing the pitting corrosion behavior of prominent Zr-based bulk metallic glasses

Comparing the pitting corrosion behavior of prominent Zr-based bulk metallic glasses

Corrosion Resistance and Electrocatalytic Properties of Metallic Glasses

Effects of annealing on the microstructure, corrosion resistance, and mechanical properties of RE65Co25Al10 (RE=Ce, La, Pr, Sm, and Gd) bulk metallic glasses

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