High-temperature oxidation of a rapidly solidified amorphous Ta-Ir alloy

Cotell, C. M.; Yurek, G. J.

doi:10.1007/bf00659342

Cited by 10 publications

(12 citation statements)

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“…Microchemical analysis of the scales on MA754 was performed using a VG Instruments HB5 STEM, which was equipped with a high-performance, windowless, EDX detector. Specimen were prepared by established techniques [4][5][6][7][8].…”

mentioning

confidence: 99%

“…It has been demonstrated that Y cations segregate to grain boundaries in Cr20~ scales that form on yttrium-implanted Co-45Cr [4][5][6] and pure Cr [7] during oxidation at elevated temperatures. It has also been demonstrated [4][5][6][7][8][9] that segregation of Y causes (1) a reduction in the rate of growth of Cr20~ by lO to lOOX, depending on the concentration of Y at the grain boundaries, (2) a change in growth mechanism from predominant cation to predominant anion diffusion along Cr203 grain boundaries, and (3) a change in microstructure of the CrzO ~ scales.…”

mentioning

confidence: 99%

“…Because Y also segregates to grain boundaries in Cr203 scales formed on MA754, it seems reasonable to attribute the lower rate of growth of Cr20~ on MA754 to Y segregation. Yttrium segregation is also likely to cause a change in the growth mechanism from predominant cation to predominant anion 005 diffusion along Cr20 ~ grain boundaries, as for the growth of Cr203 on Y-implanted Co-45Cr and Cr [6][7][8]. The differences in the microstructures and grain sizes of the Cr20 3 scales formed on MA754 and Ni-24Cr is ~oo4 attributed to segregation of Y to grain boundaries in the Cr203, which changes the growth mechanism, thereby changing the morphology of the Cr20 3 grains [7,9].…”

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confidence: 99%

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Segregation of Y to Grain Boundaries in Cr2 O 3 and NiO Scales Formed on an ODS Alloy

Yurek

Przybylski

Garratt‐Reed

1987

J. Electrochem. Soc.

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Segregation of Y to Grain Boundaries in Cr2 O 3 and NiO Scales Formed on an ODS Alloy

Yurek

Przybylski

Garratt‐Reed

1987

J. Electrochem. Soc.

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“…Oxide growth is a crucial component of metallic glass oxidation. [47] Because metallic glass is metastable, the oxide scale and nonoxidized substrate both crystallize. For multicomponent alloy systems, different oxide phases compete to grow owing to different oxygen affinities and crystal orientations, and metallicoxide and intermetallic phases compete to form owing to [34] Copyright 2016, Elsevier.…”

Section: Oxide Growth During Thermal Oxidationmentioning

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 large atoms are basic in chemistry. Addition of such atoms reduces oxygen diffusion in the oxide layer by compensation of cations in the oxide layer [9][10]. The last route uses elements with smaller ionic radius, such as V, Al, Cu and Si.…”

Section: Accepted Manuscriptmentioning

confidence: 99%