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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F24%3A43972616" target="_blank" >RIV/49777513:23520/24:43972616 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20506 - Coating and films

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

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