Magnetron sputtered W‒Zr‒Cu Thin-Film Alloys: A study of phase transition, mechanical and electrical properties

Kód výsledku v IS VaVaI

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Nalezeny alternativní kódy

RIV/49777513:23520/24:43973143

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Magnetron sputtered W‒Zr‒Cu Thin-Film Alloys: A study of phase transition, mechanical and electrical properties

Popis výsledku v původním jazyce

Building on our previous research on amorphous Zr‒Cu and W‒Zr thin-film alloys, this study is focused on the unexplored W‒Zr‒Cu system, investigating the structure and the potential enhancement of properties of thin-film alloys prepared in this ternary system. The film deposition was executed using three unbalanced magnetrons with W, Zr, and Cu targets in argon. Throughout the film series, we gradually increased the W content while keeping the atomic ratio of Zr:Cu equal to one. Our systematic investigation revealed an abrupt transition from an amorphous to nanocrystalline phase in the W‒Zr‒Cu films when the W content exceeded 66 at.%. SEM cross-sectional images of the amorphous films showed vein-like features on the fracture surface, which are typical of metallic glasses. Films with 67 at.% W are characterized by a combination of featureless structures (like amorphous) close to the substrate and thin columns in the upper part of the film. Films with even higher W contents grow in a V-shaped columnar microstructure corresponding to the bcc α-W crystalline structure. The mechanical properties of the W‒Zr‒Cu films show a strong dependence on their elemental composition. Ongoing experiments and further results on W‒Zr‒Cu ternary thin-film alloys will be presented, offering new insights into the material&apos;s phase transitions, mechanical strength, and electrical properties.

Název v anglickém jazyce

Magnetron sputtered W‒Zr‒Cu Thin-Film Alloys: A study of phase transition, mechanical and electrical properties

Popis výsledku anglicky

Building on our previous research on amorphous Zr‒Cu and W‒Zr thin-film alloys, this study is focused on the unexplored W‒Zr‒Cu system, investigating the structure and the potential enhancement of properties of thin-film alloys prepared in this ternary system. The film deposition was executed using three unbalanced magnetrons with W, Zr, and Cu targets in argon. Throughout the film series, we gradually increased the W content while keeping the atomic ratio of Zr:Cu equal to one. Our systematic investigation revealed an abrupt transition from an amorphous to nanocrystalline phase in the W‒Zr‒Cu films when the W content exceeded 66 at.%. SEM cross-sectional images of the amorphous films showed vein-like features on the fracture surface, which are typical of metallic glasses. Films with 67 at.% W are characterized by a combination of featureless structures (like amorphous) close to the substrate and thin columns in the upper part of the film. Films with even higher W contents grow in a V-shaped columnar microstructure corresponding to the bcc α-W crystalline structure. The mechanical properties of the W‒Zr‒Cu films show a strong dependence on their elemental composition. Ongoing experiments and further results on W‒Zr‒Cu ternary thin-film alloys will be presented, offering new insights into the material&apos;s phase transitions, mechanical strength, and electrical properties.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20506 - Coating and films

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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