Corrosion behavior of a Zr-base bulk glassy alloy and its crystallized counterparts

G. He; Z. Bian; G. Chen

doi:10.2320/matertrans.42.1109

Corrosion behavior of a Zr-base bulk glassy alloy and its crystallized counterparts

G. He^*
, Z. Bian
, G. Chen

^*Corresponding author for this work

University of Science and Technology Beijing

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

9 Scopus citations

Abstract

A Zr-base bulk glassy alloy with a nominal composition of Zr_52.5Cu_17.9Ni_14.6Al₁₀ Ti₅ (at. percents) was evaluated by conducting corrosion experiments in 0.5 kmol·m^-3 H₂SO₄ and 0.5 kmol·m³ NaCl electrolyte respectively using electrochemical measurements. Potentiodynamic polarization experiments were carried out with a scan rate of 20 mV/min. Passive current density and pitting corrosion potential were evaluated from potentiodynamic polarization curves. The results indicate that the full glass has a higher resistance to general corrosion and good resistance to pitting corrosion than the counterparts of the partially and completely crystallized glassy alloy. The resistance to general corrosion decreases with increase of the volume fraction of nanocrystalline phases. This is mainly due to the inhomogeneity of microstructure, the structural defects such as grain boundaries, as well as the formation of crystalline phases that have lower corrosion resistance in the partially and completely crystallized samples.

Original language	English
Pages (from-to)	1109-1111
Number of pages	3
Journal	Materials Transactions
Volume	42
Issue number	6
DOIs	https://doi.org/10.2320/matertrans.42.1109
State	Published - 2001
Externally published	Yes

Keywords

Bulk metallic glass
Corrosion
Zirconium-base glass alloy

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10.2320/matertrans.42.1109

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abstract = "A Zr-base bulk glassy alloy with a nominal composition of Zr52.5Cu17.9Ni14.6Al10 Ti5 (at. percents) was evaluated by conducting corrosion experiments in 0.5 kmol·m-3 H2SO4 and 0.5 kmol·m3 NaCl electrolyte respectively using electrochemical measurements. Potentiodynamic polarization experiments were carried out with a scan rate of 20 mV/min. Passive current density and pitting corrosion potential were evaluated from potentiodynamic polarization curves. The results indicate that the full glass has a higher resistance to general corrosion and good resistance to pitting corrosion than the counterparts of the partially and completely crystallized glassy alloy. The resistance to general corrosion decreases with increase of the volume fraction of nanocrystalline phases. This is mainly due to the inhomogeneity of microstructure, the structural defects such as grain boundaries, as well as the formation of crystalline phases that have lower corrosion resistance in the partially and completely crystallized samples.",

keywords = "Bulk metallic glass, Corrosion, Zirconium-base glass alloy",

author = "G. He and Z. Bian and G. Chen",

year = "2001",

doi = "10.2320/matertrans.42.1109",

language = "英语",

volume = "42",

pages = "1109--1111",

journal = "Materials Transactions",

issn = "1345-9678",

publisher = "Japan Institute of Metals (JIM)",

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T1 - Corrosion behavior of a Zr-base bulk glassy alloy and its crystallized counterparts

AU - He, G.

AU - Bian, Z.

AU - Chen, G.

PY - 2001

Y1 - 2001

N2 - A Zr-base bulk glassy alloy with a nominal composition of Zr52.5Cu17.9Ni14.6Al10 Ti5 (at. percents) was evaluated by conducting corrosion experiments in 0.5 kmol·m-3 H2SO4 and 0.5 kmol·m3 NaCl electrolyte respectively using electrochemical measurements. Potentiodynamic polarization experiments were carried out with a scan rate of 20 mV/min. Passive current density and pitting corrosion potential were evaluated from potentiodynamic polarization curves. The results indicate that the full glass has a higher resistance to general corrosion and good resistance to pitting corrosion than the counterparts of the partially and completely crystallized glassy alloy. The resistance to general corrosion decreases with increase of the volume fraction of nanocrystalline phases. This is mainly due to the inhomogeneity of microstructure, the structural defects such as grain boundaries, as well as the formation of crystalline phases that have lower corrosion resistance in the partially and completely crystallized samples.

AB - A Zr-base bulk glassy alloy with a nominal composition of Zr52.5Cu17.9Ni14.6Al10 Ti5 (at. percents) was evaluated by conducting corrosion experiments in 0.5 kmol·m-3 H2SO4 and 0.5 kmol·m3 NaCl electrolyte respectively using electrochemical measurements. Potentiodynamic polarization experiments were carried out with a scan rate of 20 mV/min. Passive current density and pitting corrosion potential were evaluated from potentiodynamic polarization curves. The results indicate that the full glass has a higher resistance to general corrosion and good resistance to pitting corrosion than the counterparts of the partially and completely crystallized glassy alloy. The resistance to general corrosion decreases with increase of the volume fraction of nanocrystalline phases. This is mainly due to the inhomogeneity of microstructure, the structural defects such as grain boundaries, as well as the formation of crystalline phases that have lower corrosion resistance in the partially and completely crystallized samples.

KW - Bulk metallic glass

KW - Corrosion

KW - Zirconium-base glass alloy

UR - https://www.scopus.com/pages/publications/0034885845

U2 - 10.2320/matertrans.42.1109

DO - 10.2320/matertrans.42.1109

M3 - 文章

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VL - 42

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EP - 1111

JO - Materials Transactions

JF - Materials Transactions

IS - 6

ER -

Corrosion behavior of a Zr-base bulk glassy alloy and its crystallized counterparts

Abstract

Keywords

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