Localized corrosion behavior of a zirconium-based bulk metallic glass relative to its crystalline state

W. H. Peter; R. A. Buchanan; C. T. Liu; P. K. Liaw; M. L. Morrison; J. A. Horton; C. A. Carmichael; J. L. Wright

doi:10.1016/S0966-9795(02)00130-9

Localized corrosion behavior of a zirconium-based bulk metallic glass relative to its crystalline state

W. H. Peter, R. A. Buchanan, C. T. Liu, P. K. Liaw, M. L. Morrison, J. A. Horton, C. A. Carmichael, J. L. Wright

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

184 Scopus citations

Abstract

To date, few detailed corrosion studies of the new bulk metallic glasses (BMGs) have been presented. In the present work, the aqueous electrochemical corrosion properties of BMG-11, 52.5Zr-17.9Cu-14.6Ni-5.0Ti-10.0Al (atomic percent), were investigated. Cyclic-anodic-polarization tests were conducted on amorphous and crystalline specimens in a 0.6 M NaCl solution (simulated seawater) and on amorphous specimens in a 0.05 M Na₂SO₄ solution (simulated moisture condensation, as related to ongoing fatigue experiments in humid air), all at room temperature. In the NaCl solution, both amorphous and crystalline materials were found to exhibit passive behavior with low corrosion rates (15 μm/year or less). However, susceptibilities to pitting corrosion were observed. The amorphous material was found to be more resistant to the onset of pitting corrosion under natural corrosion conditions. In the 0.05 M Na₂SO₄ solution, the amorphous BMG-11 was found to exhibit passive behavior with a very low corrosion rate (0.4 μm/year), and to be immune to pitting corrosion. Furthermore, when the protective passive film was removed by scratching with a diamond stylus, it was found to quickly reform. This result suggested that a corrosion influence on the fatigue properties of BMG-11 in humid air would be minimal. Published by Elsevier Science Ltd.

Original language	English
Pages (from-to)	1157-1162
Number of pages	6
Journal	Intermetallics
Volume	10
Issue number	11-12
DOIs	https://doi.org/10.1016/S0966-9795(02)00130-9
State	Published - Nov 2002
Externally published	Yes

Funding

The authors are grateful to the National Science Foundation Integrative Graduate Education and Research Training (IGERT) Program in Materials Lifetime Science and Engineering, managed by Drs. Wyn Jennings and Larry Goldberg, and to the Division of Materials Science and Engineering, Department of Energy under contract DE-AC05–00OR22725 with Oak Ridge National Laboratory (ORNL) operated by UT-Battelle, LLC, for support of this research. Also, special thanks are given to Drs. Charlie Brooks, Joseph Spruiell, Roberto Benson, and Charles Feigerle of the University of Tennessee for their advice and consultation.

Keywords

B. Corrosion
B. Glasses, metallic

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10.1016/S0966-9795(02)00130-9

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abstract = "To date, few detailed corrosion studies of the new bulk metallic glasses (BMGs) have been presented. In the present work, the aqueous electrochemical corrosion properties of BMG-11, 52.5Zr-17.9Cu-14.6Ni-5.0Ti-10.0Al (atomic percent), were investigated. Cyclic-anodic-polarization tests were conducted on amorphous and crystalline specimens in a 0.6 M NaCl solution (simulated seawater) and on amorphous specimens in a 0.05 M Na2SO4 solution (simulated moisture condensation, as related to ongoing fatigue experiments in humid air), all at room temperature. In the NaCl solution, both amorphous and crystalline materials were found to exhibit passive behavior with low corrosion rates (15 μm/year or less). However, susceptibilities to pitting corrosion were observed. The amorphous material was found to be more resistant to the onset of pitting corrosion under natural corrosion conditions. In the 0.05 M Na2SO4 solution, the amorphous BMG-11 was found to exhibit passive behavior with a very low corrosion rate (0.4 μm/year), and to be immune to pitting corrosion. Furthermore, when the protective passive film was removed by scratching with a diamond stylus, it was found to quickly reform. This result suggested that a corrosion influence on the fatigue properties of BMG-11 in humid air would be minimal. Published by Elsevier Science Ltd.",

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AU - Peter, W. H.

AU - Buchanan, R. A.

AU - Liu, C. T.

AU - Liaw, P. K.

AU - Morrison, M. L.

AU - Horton, J. A.

AU - Carmichael, C. A.

AU - Wright, J. L.

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AB - To date, few detailed corrosion studies of the new bulk metallic glasses (BMGs) have been presented. In the present work, the aqueous electrochemical corrosion properties of BMG-11, 52.5Zr-17.9Cu-14.6Ni-5.0Ti-10.0Al (atomic percent), were investigated. Cyclic-anodic-polarization tests were conducted on amorphous and crystalline specimens in a 0.6 M NaCl solution (simulated seawater) and on amorphous specimens in a 0.05 M Na2SO4 solution (simulated moisture condensation, as related to ongoing fatigue experiments in humid air), all at room temperature. In the NaCl solution, both amorphous and crystalline materials were found to exhibit passive behavior with low corrosion rates (15 μm/year or less). However, susceptibilities to pitting corrosion were observed. The amorphous material was found to be more resistant to the onset of pitting corrosion under natural corrosion conditions. In the 0.05 M Na2SO4 solution, the amorphous BMG-11 was found to exhibit passive behavior with a very low corrosion rate (0.4 μm/year), and to be immune to pitting corrosion. Furthermore, when the protective passive film was removed by scratching with a diamond stylus, it was found to quickly reform. This result suggested that a corrosion influence on the fatigue properties of BMG-11 in humid air would be minimal. Published by Elsevier Science Ltd.

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Localized corrosion behavior of a zirconium-based bulk metallic glass relative to its crystalline state

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