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

B. A. Green; R. V. Steward; I. Kim; C. K. Choi; P. K. Liaw; K. D. Kihm; Y. Yokoyama

doi:10.1016/j.intermet.2008.12.011

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

B. A. Green, R. V. Steward, I. Kim, C. K. Choi, P. K. Liaw, K. D. Kihm, Y. Yokoyama

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

The polarization behavior of a Zr₅₀Cu₄₀Al₁₀ (atomic percent) bulk metallic glass was investigated in a 0.6 M NaCl electrolyte while being observed using optical microscopy (OM). In situ anodic-polarization experiments revealed a tendency towards a diffusion-controlled mechanism other than passivity. In situ OM images illustrated pits initiated at the corrosion potential (that is, open-circuit conditions). Scanning electron microscopy (SEM) was utilized to examine the region where the corrosion pits initiated. SEM images showed that the area of pit initiation was surrounded by an oxide that formed on the surface due to the exposure to the NaCl electrolyte.

Original language	English
Pages (from-to)	568-571
Number of pages	4
Journal	Intermetallics
Volume	17
Issue number	7
DOIs	https://doi.org/10.1016/j.intermet.2008.12.011
Publication status	Published - 2009 Jul
Externally published	Yes

Keywords

B. corrosion
B. glasses, metallic
F. corrosion behavior

ASJC Scopus subject areas

Chemistry(all)
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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title = "In situ observation of pitting corrosion of the Zr50Cu40Al10 bulk metallic glass",

abstract = "The polarization behavior of a Zr50Cu40Al10 (atomic percent) bulk metallic glass was investigated in a 0.6 M NaCl electrolyte while being observed using optical microscopy (OM). In situ anodic-polarization experiments revealed a tendency towards a diffusion-controlled mechanism other than passivity. In situ OM images illustrated pits initiated at the corrosion potential (that is, open-circuit conditions). Scanning electron microscopy (SEM) was utilized to examine the region where the corrosion pits initiated. SEM images showed that the area of pit initiation was surrounded by an oxide that formed on the surface due to the exposure to the NaCl electrolyte.",

keywords = "B. corrosion, B. glasses, metallic, F. corrosion behavior",

author = "Green, {B. A.} and Steward, {R. V.} and I. Kim and Choi, {C. K.} and Liaw, {P. K.} and Kihm, {K. D.} and Y. Yokoyama",

note = "Funding Information: This material is based upon the work supported under a National Science Foundation Graduate Research Fellowship. The authors are grateful to the National Science Foundation Integrative Graduate Education and Research Training (IGERT) Program on Materials Lifetime Science and Engineering. Program directors are Drs. C. Van Hartvesldt, J. Giordan, L. Clesceri, W. Jennings, and L. Goldberg. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.",

year = "2009",

month = jul,

doi = "10.1016/j.intermet.2008.12.011",

language = "English",

volume = "17",

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T1 - In situ observation of pitting corrosion of the Zr50Cu40Al10 bulk metallic glass

AU - Green, B. A.

AU - Steward, R. V.

AU - Kim, I.

AU - Choi, C. K.

AU - Liaw, P. K.

AU - Kihm, K. D.

AU - Yokoyama, Y.

N1 - Funding Information: This material is based upon the work supported under a National Science Foundation Graduate Research Fellowship. The authors are grateful to the National Science Foundation Integrative Graduate Education and Research Training (IGERT) Program on Materials Lifetime Science and Engineering. Program directors are Drs. C. Van Hartvesldt, J. Giordan, L. Clesceri, W. Jennings, and L. Goldberg. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.

PY - 2009/7

Y1 - 2009/7

N2 - The polarization behavior of a Zr50Cu40Al10 (atomic percent) bulk metallic glass was investigated in a 0.6 M NaCl electrolyte while being observed using optical microscopy (OM). In situ anodic-polarization experiments revealed a tendency towards a diffusion-controlled mechanism other than passivity. In situ OM images illustrated pits initiated at the corrosion potential (that is, open-circuit conditions). Scanning electron microscopy (SEM) was utilized to examine the region where the corrosion pits initiated. SEM images showed that the area of pit initiation was surrounded by an oxide that formed on the surface due to the exposure to the NaCl electrolyte.

AB - The polarization behavior of a Zr50Cu40Al10 (atomic percent) bulk metallic glass was investigated in a 0.6 M NaCl electrolyte while being observed using optical microscopy (OM). In situ anodic-polarization experiments revealed a tendency towards a diffusion-controlled mechanism other than passivity. In situ OM images illustrated pits initiated at the corrosion potential (that is, open-circuit conditions). Scanning electron microscopy (SEM) was utilized to examine the region where the corrosion pits initiated. SEM images showed that the area of pit initiation was surrounded by an oxide that formed on the surface due to the exposure to the NaCl electrolyte.

KW - B. corrosion

KW - B. glasses, metallic

KW - F. corrosion behavior

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SP - 568

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JO - Intermetallics

JF - Intermetallics

SN - 0966-9795

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