Effect of microalloying of Nb on corrosion resistance and thermal stability of ZrCu-based bulk metallic glasses

Nie, Xi; Xu, Xianbo; Jiang, Qinghong; Chen, Lianyi; Xu, Yanjin; Fang, Yunzhang; Xie, Guanqun; Luo, Ming; Wu, Feng; Wang, X.D.; Cao, Qing; Jiang, Jiuchuan

doi:10.1016/j.jnoncrysol.2008.10.011

Cited by 28 publications

(13 citation statements)

References 23 publications

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“…For example, partial substitution of Zr by Nb does not have a significant change in the mechanical properties of Zr (46Àx) Nb x Cu 37.6 Ag 8.4 Al 8 alloys. 64 Other transition elements such as Co and Fe seem to have a larger influence on the mechanical behavior of BMG composites corresponding to the Zr-Cu-Al system. For CuZr-based metallic glass composites, the second-phase particles consist of B2-CuZr phase that transforms into B199 martensite upon loading.…”

Section: Metallic Glass Compositesmentioning

confidence: 96%

Role of minor additions on metallic glasses and composites

González

2015

J. Mater. Res.

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Microalloying refers to the addition of a small concentration of an alloying element to tune the properties of the parent alloy. Microalloying technology enables to control the glass formation and the mechanical properties of bulk metallic glasses (BMGs). This manuscript presents a comprehensive review on recent developments and breakthroughs in the field of microalloying for tuning the properties of BMGs and composites with focus on the results. The ability of multiple element coaddition to optimize the glass formation and the importance of future alloy developments have been highlighted. Proper microalloying can be used to tailor not only the mechanical properties of the amorphous phase but also those of the crystalline phase, which opens up the possibility for tuning the mechanical performance at different length scales. The effectiveness in controlling the mechanical performance through microalloying was shown to greatly depend on the alloy composition and closeness to the critical amorphous diameter. A tentative outlook commenting the potential and challenges of this exciting field of research is also presented.

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Section: Metallic Glass Compositesmentioning

confidence: 96%

Role of minor additions on metallic glasses and composites

González

2015

J. Mater. Res.

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“…The cast Zr 56 Al 16 Co 28−x Nb x (x = 1, 3, and 5 at%) metallic glass are spontaneously passivated in NaCl solution with a passive current density between 10 −5 and 10 −6 A/cm 2 , and the pitting potentials shift to positive direction with the increasing of Nb content [14]. Though the Nb-bearing alloy's pitting potential and passive region are larger than Nb-free alloy, after pitting, however, the alloy with 4 at% Nb exhibits higher corrosion current density than Nb-free alloy, as shown in Figure 3, meaning that the corrosion reactions in Nbbearing alloy are more severe at high potential [15]. Generally, the addition of Nb element in Zr-MG can facilitate the formation of highly protective Zr-, Al-, and Nb-enriched surface film, while Cu addition will deteriorate the passivation [16].…”

Section: Effect Of Compositionmentioning

confidence: 94%

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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“…Although Co ions are known to be cytotoxic, the total mass of Co ions released by a unit surface area of glassy Zr 56 Al 16 Co 28 alloy (0.3 ng/mm 2 ) is significantly lower than the Co-CrMo alloy (5.8 ng/mm 2 ) [13]. Moreover, the corrosion resistance of Zr-Al-Co BMGs can be further improved by the Nb addition due to the formation of highly protective passive film on the alloys' surface [14,15,21]. However, the addition of Nb to the Zr-based BMG shows a detrimental effect on their glass-forming ability, which may hinder their wide application [14,21].…”

Section: Introductionmentioning

confidence: 99%