Oxidation behavior of a Zr–Cu–Al–Ni amorphous alloy in air at 300–425 °C

Kai, Wu; Hsieh, Hsin-Hsin; Nieh, T.G.; Kawamura, Yoshihito

doi:10.1016/s0966-9795(02)00163-2

Cited by 76 publications

(70 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to fill the space, the alloy may deform plastically and move inward. Similar observations were also found in Zr-Cu-Al-Ni [26] and Cu-Zr-Al [27] metallic glasses.…”

Section: Oxidation Kineticssupporting

confidence: 87%

See 1 more Smart Citation

The oxidation behavior of Cu42Zr42Al8Ag8 bulk metallic glasses

2012

View full text Add to dashboard Cite

The oxidation behavior of Cu 42 Zr 42 Al 8 Ag 8 bulk metallic glass was studied in synthetic air over the temperature range of 330-460°C. The oxidation kinetics of the metallic glass follows a single parabolic rate law at 330 and 390°C and a two-stage parabolic rate law from 420 to 460°C. Silver precipitates on the topmost oxide layer of the metallic glass were revealed by energydispersive X-ray spectroscopy together with X-ray diffraction pattern. Observation using scanning electron microscopy shows that silver metal precipitated at all temperatures and some islands were formed on the outermost copper oxide layer at high temperatures. Multilayered oxide scales were also observed with silver precipitates sandwiched between copper-and zirconium-rich oxides layers.

show abstract

“…In order to fill the space, the alloy may deform plastically and move inward. Similar observations were also found in Zr-Cu-Al-Ni [26] and Cu-Zr-Al [27] metallic glasses.…”

Section: Oxidation Kineticssupporting

confidence: 87%

“…The other one is possibly related to the crystallization of metallic glasses [31]. This point was testified by many comparative studies that the mass gain of amorphous alloys is considerably larger than that of the crystallized alloy in the temperature region corresponding to the supercooled liquid state [21,26].…”

Section: Oxidation Kineticsmentioning

confidence: 99%

The oxidation behavior of Cu42Zr42Al8Ag8 bulk metallic glasses

2012

View full text Add to dashboard Cite

show abstract

“…[5]) is an indication that the ratedetermining step for the oxidation reaction is a gasmetal interface reaction. [57,58] This situation generally occurs when the surface oxide has a volume much different than the volume of the alloy from which it forms, and, therefore, it is unable to form a continuous passive layer and suppress further oxidation of the substrate alloy. On the other hand, a parabolic time dependence of the specimen mass gain during oxidation, leading to a decrease in the oxidation rate with time, is an indication that diffusion through the oxide layer becomes the rate-controlling process.…”

Section: Compression Propertiesmentioning

confidence: 99%

“…The BMGs usually follow this oxidation-rate law. [57][58][59][60][61] These results show that the Ca 55 ) amorphous alloys were studied using static aqueous submersion at room temperature. [62] The results are shown in Figure 10.…”

Section: Compression Propertiesmentioning

confidence: 99%

Development and Characterization of Low-Density Ca-Based Bulk Metallic Glasses: An Overview

Senkov

Miracle

Keppens

et al. 2007

Metall Mater Trans A

View full text Add to dashboard Cite

Ca-based bulk metallic glasses (BMGs) have unique properties and represent a new seventh group of BMGs. Many of them have excellent GFA, which can be related to their efficient atomic packing, low onset driving force for crystallization, and high viscosity (high relaxation time) of the supercooled liquid. The Ca-based glasses have the lowest density and elastic moduli among all BMGs discovered to date. Unfortunately, as many other glasses, Ca-based BMGs are brittle below the glass transition temperature, and they also have marginal oxidation and corrosion resistance. The latter can be improved by proper selection of alloying elements. In this article, we review recent work on the development of low-density Ca-based BMGs and discuss the effect of alloy composition on the thermal, physical, and chemical properties of these glasses.

show abstract

“…Although many works have been done for studying the oxidation behaviors of MGs, mechanisms of oxidation are still not very clear [1][2][3][4][5][6][7][8][9][10]. For example, metallic glasses (or amorphous alloys) are in general believed to be more oxidation and corrosion resistant in comparison to their crystalline counterparts, due to the lack of any crystal-like microstructure, such as grain boundaries, which would otherwise act as local active sites for corrosion and oxidation [2,3].…”

Section: Introductionmentioning

confidence: 99%

Oxidation features of plastic deformed Zr-based bulk metallic glass

et al. 2011

Journal of Alloys and Compounds

View full text Add to dashboard Cite

a b s t r a c tThe surface morphology of in situ deformed, pre-deformed, undeformed and crystallized Zr 47.9 Ti 0.3 Ni 3.1 Cu 39.3 Al 9.4 bulk metallic glass in air at elevated temperatures are investigated to improve the understanding of the effect of plastic deformation on the oxidation. The plastic deformation is performed through instrumental macroindentation, while could provide a well developed shear offset pattern around the indents at lower temperatures. The oxidation experimental results show that the in situ formed and pre-existed shear bands are more susceptible to oxidation. The plastic deformation region during homogenous deformation has also a significant oxidation sensitivity compared with undeformed material. To clarify the oxidation mechanism of shear band, specimens with surface scratches were also studied. The mechanism for the preferential oxidation of shear bands and of the plastic deformation region is discussed.

show abstract

Oxidation behavior of a Zr–Cu–Al–Ni amorphous alloy in air at 300–425 °C

Cited by 76 publications

References 11 publications

The oxidation behavior of Cu42Zr42Al8Ag8 bulk metallic glasses

The oxidation behavior of Cu42Zr42Al8Ag8 bulk metallic glasses

Development and Characterization of Low-Density Ca-Based Bulk Metallic Glasses: An Overview

Oxidation features of plastic deformed Zr-based bulk metallic glass

Contact Info

Product

Resources

About