On thermal stability and oxidation behavior of metastable W–Zr thin-film alloys

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F22%3A43965505" target="_blank" >RIV/49777513:23520/22:43965505 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.jallcom.2022.166599" target="_blank" >https://doi.org/10.1016/j.jallcom.2022.166599</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2022.166599" target="_blank" >10.1016/j.jallcom.2022.166599</a>

Result language

angličtina

Original language name

On thermal stability and oxidation behavior of metastable W–Zr thin-film alloys

Original language description

The thermal stability and oxidation behavior of metastable W–Zr thin-film alloys with up to 83 at. % Zr were thoroughly investigated with a focus on the effect of gradual substitution of Zr for W. The films were prepared by dc magnetron co-sputtering of W and Zr targets in argon on unheated and unbiased substrates. The experiments showed that a supersaturated α-W(Zr) solid solution structure of as-deposited W-rich films with up to 19 at. % Zr is highly thermally stable up to 1200 °C in argon and the thermal stability of the W–Zr thin-film metallic glasses (33–83 at. % Zr) decreases with increasing Zr content. Nevertheless, the thermal stability of the W–Zr thin-film metallic glass with 33 at. % Zr reaches 1420 °C, which is very high value for binary metallic glass. The annealing of W-rich films (0–24 at. % Zr) in air leads to the formation of a protective surface oxide layer, which serves as a more effective oxygen diffusion barrier due to an increasing packing factor and amorphization with Zr addition. On the other hand, no protective surface oxide layer is grown during the annealing in air in the case of the W–Zr thin-film metallic glasses and the oxidation leads to the formation of compact, homogeneously oxidized substoichiometric W–Zr–O films with an amorphous structure and enhanced mechanical properties before reaching the final mass gain.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20506 - Coating and films

Project

<a href="/en/project/GA22-18760S" target="_blank" >GA22-18760S: Novel functional thin-film materials based on metallic glasses and dual-phase structure</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN

0925-8388

e-ISSN

1873-4669

Volume of the periodical

925

Issue of the periodical within the volume

5 DEC 2022

Country of publishing house

CH - SWITZERLAND

Number of pages

8

Pages from-to

"166599-1"-"166599-8"

UT code for WoS article

000848385200001

EID of the result in the Scopus database

2-s2.0-85135802933