The oxidation behavior of Cu42Zr42Al8Ag8 bulk metallic glasses

Cao, Wenbin; Zhang, Jiliang; Shek, C.H.

doi:10.1007/s10853-012-6851-y

Cited by 19 publications

(4 citation statements)

References 28 publications

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“…alloys follow parabolic functions and their kinetic constants can be determined by graphing the relationship of changes in mass per unit area (Δm/A) with time during isothermal oxidation. This law of parabolic oxidation kinetics is also in accordance with observations made by several researchers (Kai et al, 2009;Triwikantoro & Munawaroh, 2008;Triwikantoro et al, 1999) and also one stage parabolic and two stage parabolic kinetics (Cao, Zhang, & Shek, 2013;Chen, 2013;Hu, Cao, & Shek, 2014;M. Zhang, Yao, Wang, & Deng, 2014).…”

Section: Resultssupporting

confidence: 92%

Oxidation Behavior of Zr-based Amorphous Alloys at 400˚- 450˚C in Air

Triwikantoro¹,

Pribadi²,

Munawaroh³

2019

J. pena sains

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The study of oxidation behavior of amorphous alloys based on Zirconium with 2 variations in composition was carried out: Zr64.5Cu17Ni11Al7.5 and Zr69.5Cu12Ni11Al7.5 at temperatures of 400 - 450˚C in air. Amorphous Zr-based alloys were thermally characterized using Differential Scanning Calorimeter (DSC) to determine the crystallization temperature and glass transition temperature. The oxidation characterization was carried out using a Thermo gravimetric Analyzer (TGA) at temperatures of 400, 425, and 450˚C for 4 hours in air. The phase analysis of the oxidation product was identified using X-Ray Diffaction (XRD). Based on DSC data the crystallization temperature for Zr64.5Cu17Ni11Al7.5 and Zr69.5Cu12Ni11Al7.5 is 426 and 442˚C respectively. The oxidation kinetics of the two alloys follow parabolic law and the oxidation rate increases with the addition of temperature. Oxides formed during isothermal oxidation in the Zr64.5Cu17Ni11Al7.5 and Zr69.5Cu12Ni11Al7.5 alloys are t-ZrO2 (tetragonal) as the dominant phase and ZrO2 (monoclinic) and CuO as the minor phase. The intermetallic phase is also formed in both samples, t-Zr2Ni and Zr2Cu.

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Section: Resultssupporting

confidence: 92%

Oxidation Behavior of Zr-based Amorphous Alloys at 400˚- 450˚C in Air

Triwikantoro¹,

Pribadi²,

Munawaroh³

2019

J. pena sains

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“…Thus, Cu diffused outward to the gas/oxide interface and precipitated as either a metallic or an oxide phase during the final oxidation stage. [ 45 ] In addition, stress‐induced nonoxidizing elemental diffusion into microcracks can seal the cracks and lead to self‐repairing, which is beneficial for maintaining surface integrity. [ 46 ] Oxidation‐induced elemental redistribution can be utilized as a method to proactively adjust metallic glass chemical compositions and microstructures, for example, by forming designated matrix‐phase frameworks upon which to construct composite materials.…”

Section: Metallic Glass Oxidation Behaviorsmentioning

confidence: 99%

Influence of Oxidation on Structure, Performance, and Application of Metallic Glasses

et al. 2022

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Owing to their unique structure and outstanding properties, metallic glasses are a novel class of structural and functional materials with vast application prospects. However, the metastable amorphous structures and chemical activity of metallic glass constituent elements lead to frequent oxidation during preparation, processing, and application. Comprehensively understanding the oxidation behaviors and underlying mechanisms of metallic glasses is essential for gaining knowledge of metallic glass structures and properties and for promoting engineering applications. Although many studies have examined these issues, more investigations are still required to explore potential industrial applications of metallic glasses. Here, recent research on metallic glass oxidation is consolidated by summarizing the oxidation influence on metallic glass structure, performance, and application and the possibilities and feasibility of oxidizing metallic glasses to reinforce materials or develop material systems are discussed.

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“…The fitting by peak position and intensity identified Zr 2 Cu, Zr 7 Cu 10 , ZrO 2 and ZrO crystallines. The latter two are typically formed during oxidation of zirconium amorphous alloys [37,38].…”

Section: Nanocrystals Are Formed Upon Meltingmentioning

confidence: 99%

Surface Modification of the Bulk Metallic Glass Zr$_{46}$Cu$_{36.8}$Ag$_{9.2}$Al$_8$ Triggered by Millisecond Laser Irradiation

Shlykova¹,

Gasanov²,

Nasedkin³

et al. 2018

Preprint

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Zirconium based bulk metallic glasses are industrially valuable materials which commercial market grows rapidly. Surface modification of these metallic glasses by high-intensity lasers is relatively new and costly treatment promising great advantages over classical surface processing methods. In this work we perform the case study of surface modification of Zr$_{46}$Cu$_{36.8}$Ag$_{9.2}$Al$_8$ metallic glass by high-intensity millisecond laser beam. Our results suggest chemical deposition of atmospheric oxygen and nitrogen in the laser-melted surface area and its surroundings. Zirconium nitride layer was detected in the middle of laser-irradiated area. Nanocrystals embedded in the amorphous matrix were also formed on the surface. Overall, our findings suggest possibilities for improvement of mechanical characteristics of the studied metallic glass.

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The oxidation behavior of Cu42Zr42Al8Ag8 bulk metallic glasses

Cited by 19 publications

References 28 publications

Oxidation Behavior of Zr-based Amorphous Alloys at 400˚- 450˚C in Air

Oxidation Behavior of Zr-based Amorphous Alloys at 400˚- 450˚C in Air

Influence of Oxidation on Structure, Performance, and Application of Metallic Glasses

Surface Modification of the Bulk Metallic Glass Zr$_{46}$Cu$_{36.8}$Ag$_{9.2}$Al$_8$ Triggered by Millisecond Laser Irradiation

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