Oxidation behavior of amorphous and nanoquasicrystalline Zr–Pd and Zr–Pt alloys

Mondal, K.; Chatterjee, U. K.; Murty, B.S.

doi:10.1016/j.jallcom.2007.05.058

Cited by 10 publications

(6 citation statements)

References 28 publications

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“…Our observations on oxidation behavior of amorphous and nanocrystalline Ti 60 Ni 40 are corroborated by the results obtained by other investigators in similar type of studies [62,65,70]. It was reported by Mondal et al [62,65] that the nanoquasicrystalline Zr 80 Pt 20 alloy with a multiple phase structure (ZrPt, Zr 5 Pt 3 and α Zr) shows better oxidation resistance as compared to its amorphous form and the activation energy for oxidation of nanoquasicrystalline state (2.2 eV) is higher than the activation energy for the amorphous state (1.8 eV). In this case it was suggested that the more open structure of the glassy specimen than that of the nanocrystalline specimen appears to facilitate a higher degree of oxygen diffusion into the glassy alloy leading to greater oxidation tendency [62,65,70].…”

Section: (B) Oxidation Studiessupporting

confidence: 92%

“…It was reported by Mondal et al [62,65] that the nanoquasicrystalline Zr 80 Pt 20 alloy with a multiple phase structure (ZrPt, Zr 5 Pt 3 and α Zr) shows better oxidation resistance as compared to its amorphous form and the activation energy for oxidation of nanoquasicrystalline state (2.2 eV) is higher than the activation energy for the amorphous state (1.8 eV). In this case it was suggested that the more open structure of the glassy specimen than that of the nanocrystalline specimen appears to facilitate a higher degree of oxygen diffusion into the glassy alloy leading to greater oxidation tendency [62,65,70]. In another investigation Koster et al [70] studied the oxidation kinetics of glassy and nanocrystalline Zr-Cu-Ni-Al at 360 0 C. It was reported that the oxidation resistance improves very significantly from the amorphous to the nanocrystalline microstructure.…”

Section: (B) Oxidation Studiesmentioning

confidence: 99%

“…Investigations have also been reported on oxidation/corrosion behavior of nanocrystalline alloys [59][60][61]. Some studies have been carried out on comparative behavior of oxidation/corrosion of amorphous and nanocrystalline forms of alloys under identical experimental conditions [62][63][64][65][66][67]. Latest Trends in Condensed Matter Physics…”

Section: Introductionmentioning

confidence: 99%

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Corrosion and Oxidation Behavior of Ti-Based Amorphous and Nanocrystalline Alloys

Sharma

2011

SSP

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Amorphous alloys, in general, exhibit superior mechanical and chemical properties as compared to their crystalline counterparts, which is attributed to their chemical homogeneity and to the absence of crystal-like structural defects. Nanocrystalline and fully crystallized forms of these alloys can be easily obtained by a suitable thermal annealing treatment. It is important to have the knowledge of corrosion/oxidation behavior of amorphous and nanocrystalline alloys for various possible applications. In contrast to many investigations on corrosion and oxidation behavior of amorphous alloys reported in the literature, only limited studies have been carried out on comparison of corrosion/oxidation behavior of amorphous and nanocrystalline states of the same alloy. With this motivation potentiodynamic polarization studies were carried out on amorphous and nanocrystalline states of the alloy Ti60Ni40 in several aqueous media at room temperature. The oxidation in air was also investigated in the temperature range 2800C-3800C using a thermogravimetric analyzer. It was found from these investigations that nanocrystalline state exhibits the maximum corrosion/oxidation resistance in comparison to amorphous and crystalline states. The better corrosion/oxidation resistance of nanocrystalline state can be explained in terms of the nature of the nanocrystalline phase/phases and the size of the crystallites. The results of the present study are supported by other similar studies reported in the literature. A short review on comparison of corrosion/oxidation behaviour of amorphous and nanocrystalline Ti-based alloy is also presented in the paper.

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Section: (B) Oxidation Studiessupporting

confidence: 92%

Section: (B) Oxidation Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Corrosion and Oxidation Behavior of Ti-Based Amorphous and Nanocrystalline Alloys

Sharma

2011

SSP

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“…It was shown that melt-spun Zr 70 Pd 30 monolithic glassy alloy samples underwent fast oxidation at 653 K in 30 min forming simultaneously two polymorphs of ZrO 2 : tetragonal and monoclinic with underlying crystalline Pd41. Fast ″catastrophic″ oxidation of glassy Zr 70 Pd 30 and Zr 70 Au 30 was also observed and reported in Ref.…”

Section: Discussionsupporting

confidence: 53%

Nanostructured Zr-Pd Metallic Glass Thin Film for Biochemical Applications

Ketov

Shi

Xie

et al. 2015

Sci Rep

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Zr-Pd metallic glassy thin films with a hierarchical nano-scale structure, produced by magnetron sputtering of the Zr and Pd powder mixture, demonstrate a unique combination of physical and biochemical properties. Thermal stability of the nano-structured glassy samples, their resistance to oxidation in dry air and phase transformation behavior are discussed in the present work. These binary alloy samples also show exceptionally high corrosion resistance and spontaneous passivation in a simulated body fluid. Experiments on the catalytic activity and biocompatibility of this nanostructured metallic glass indicate that this is a very suitable material for biochemical applications. Compared to the multicomponent alloys studied earlier this binary alloy has much simpler chemical composition, which makes preparation of the sample with defined stoichiometry easier, especially when the elements have different sputtering rates.

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“…[ 30 ] For example, oxygen anion diffusivity gradually increases in the order crystalline, nanocrystalline, partially nanocrystalline, and amorphous states in the same alloy system. [ 31 ] Moreover, amorphous phase diffusivity gradually decreases during structural relaxation because excess free volume is annihilated. [ 32 ] Nevertheless, the exact role of excess free volume in elemental diffusion during metallic glass oxidation remains unknown, and a quantitative relationship between the free volume content and elemental diffusivity is still lacking.…”

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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Oxidation behavior of amorphous and nanoquasicrystalline Zr–Pd and Zr–Pt alloys

Cited by 10 publications

References 28 publications

Corrosion and Oxidation Behavior of Ti-Based Amorphous and Nanocrystalline Alloys

Corrosion and Oxidation Behavior of Ti-Based Amorphous and Nanocrystalline Alloys

Nanostructured Zr-Pd Metallic Glass Thin Film for Biochemical Applications

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

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