Electrochemical corrosion behavior of a Zr-based bulk-metallic glass

Jiang, Wenhui; Jiang, F.; Green, B. A.; Liu, F. X.; Liaw, Peter K.; Choo, Hahn; Qiu, Keqiang

doi:10.1063/1.2762282

Cited by 68 publications

(32 citation statements)

References 15 publications

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“…Several studies on aqueous corrosion of glass-forming alloys, e.g. FeCSiBPCrAlMo [11], NiNb [12] and ZrCuNiAlTi [13], suggested an enhanced corrosion resistance on structurally relaxed metallic glasses as indicated by the significantly improved passivation behaviours. Ni-Nb-Ti-Zr-Co bulk metallic glasses possess not only high glass-forming ability but also extremely high corrosion resistance and good mechanical properties [14][15], which are promising materials for the applications in extremely aggressive solutions.…”

Section: Introductionmentioning

confidence: 99%

Effect of microstructure on corrosion behaviours of a Ni-based metallic glass

2011

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Electrochemical corrosion behaviours of as-spun, as-cast, and relaxed Ni 55 Nb 20 Ti 10 Zr 8 Co 7 metallic glasses were investigated in 3 mass% NaCl and 1 N H 2 SO 4 solutions in order to study the effect of different amorphous microstructure. Static immersion tests indicate that the as-spun ribbon possesses the most active state in the NaCl solution at its open circuit potential, followed by the as-cast rod, the relaxed ribbon, and the relaxed rod. While in the H 2 SO 4 solution, the rod samples are more stable than the ribbons, and the relaxed samples exhibit higher stability than the as-quenched samples. The polarization tests revealed slightly higher passive current density (i pass ) for the ribbons than those of the rods in both electrolytes, although no significant differences in i pass were found between the relaxed and the as-quenched specimens. It is concluded that electrochemical corrosion behaviours of metallic glasses are related to the amorphous structure, and a decrease in free volume generally favors corrosion resistance.

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Section: Introductionmentioning

confidence: 99%

Effect of microstructure on corrosion behaviours of a Ni-based metallic glass

2011

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“…As a result, nickel and beryllium free Zr-and Ti-based BMGs were considered. [10][11][12][13][14] However, these alloy systems have relatively lower glass-forming ability when compared with the multicomponent BMGs such as the ZrTiCuNiBe BMG series. Ni or Be elements are often necessary to enhance the glass formability as their use can introduce large atomic size difference when compared with other elements such as Zr.…”

Section: Introductionmentioning

confidence: 99%

In vitro study on Zr‐based bulk metallic glasses as potential biomaterials

et al. 2010

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With pure Ti and pure Zr as controls, the corrosion resistance, ion release behavior, and in vitro biocompatibility of Be-containing Zr₄₁Ti₁₄Cu₁₂Ni₁₀Be₂₃ bulk metallic glass (BMG) (LM1), Zr₄₄Ti₁₁Cu₁₀Ni₁₀Be₂₅ BMG (LM1b), and Be-free Zr₅₇Nb₅Cu₁₅.₄Ni₁₂.₆Al₁₀ BMG (LM106) were investigated in terms of electrochemical measurements in simulated body fluid (SBF) with pH value 7.4 and artificial saliva (AS) with pH value 6.3, and 3-[4,4-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay using L929 and NIH3T3 cells, aiming to assess the feasibility of Zr-based BMGs as potential biomaterial. It was found that LM1b showed superior corrosion resistance to LM106 and LM1 in both SBF and AS, and comparable with pure Ti and pure Zr. After 7200 s immersion, a two-layer structure oxide film was formed on LM1, LM1b, and pure Zr surfaces, while one-layer structure oxide film was formed on LM106 and pure Ti surfaces. The pitting corrosion potentials of LM1b were much higher than that of LM1, LM106, and pure Zr, resulting in very few ions releasing into the electrolytes. No Be ion could be detected but a little amount of Cu ion was detected for LM106, LM1, and LM1b after immersion in Dulbecco's modified Eagle's medium for 72 h at 37 °C. The indirect cytotoxicity results show that LM106, LM1, and LM1b extracts had no cytotoxicity to L929 and NIH3T3 cells. The direct cytotoxicity results show that cells could adhere well on the Zr-based BMG surface as in pure Ti and Zr. Lower cell proliferation rate of LM106 and LM1 is observed when compared with LM1b, which was found to be caused by Cu ion releasing rather than by Be ion.

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“…These corrosion currents are significantly lower than those obtained in the case of the 316L stainless steel [27]. Further enhancement of the corrosion resistance could be achieved as several studies on aqueous corrosion of glass-forming alloys suggested [28,29] on structurally relaxed metallic glasses. The improved resistance of amorphous alloys is not only based on their structure itself but also on their ability to promote amorphous oxide formation.…”

Section: Interdisciplinary Research In Engineering: Steps Towards Brementioning

confidence: 78%

Corrosion Resistance Measurements of Amorphous Ni40Ti40Nb20 Bipolar Plate Material for Polymer Electrolyte Membrane Fuel Cells

Thalmaier

Vida–Simiti

Vermeșan

et al. 2013

AEF

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Metallic bipolar plates have the advantages of better manufacturability, higher strength over graphite bipolar plates. The higher strength and toughness of the metallic materials permits the reduction of the width of the bipolar plate so, the volume and mass of the fuel cell can also be reduced. In this paper we are investigating the use of Ni-based amorphous material as a bipolar plate for polymer electrolyte membrane fuel cell (PEMFC). The major requirements of the metallic bipolar plate material are low weight, high corrosion and low contact resistance. The corrosion property of the present alloy has been investigated under conditions that simulate the fuel cell environment. Hydrogen gas and air were bubbled into a 1 N H2SO4solution at 70 °C, throughout the experiment to simulate the respective anodic and cathodic PEMFC environment. The Ni-base amorphous alloys displayed higher corrosion resistance than stainless steel.

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Electrochemical corrosion behavior of a Zr-based bulk-metallic glass

Cited by 68 publications

References 15 publications

Effect of microstructure on corrosion behaviours of a Ni-based metallic glass

Effect of microstructure on corrosion behaviours of a Ni-based metallic glass

In vitro study on Zr‐based bulk metallic glasses as potential biomaterials

Corrosion Resistance Measurements of Amorphous Ni40Ti40Nb20 Bipolar Plate Material for Polymer Electrolyte Membrane Fuel Cells

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