<div class="csl-bib-body">
<div class="csl-entry">Kirnbauer, A., Kolozsvári, S., & Mayrhofer, P. H. (2023, June 13). <i>Influence of Al-content on structure, mechanical properties and thermal stability of reactively sputtered AlTaTiVZr high-entropy nitride coatings</i> [Conference Presentation]. ÖGV-Seminar 2023, Wien, Austria. http://hdl.handle.net/20.500.12708/192579</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/192579
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dc.description.abstract
In the field of materials research, a novel alloying concept, so-called high-entropy metal-sublattice ceramics have gained a lot of interest in the last years. These consist of a solid solution of 5 or more binary ceramics leading to a high-entropy metal-sublattice. Within this work, we investigate the structure, mechanical properties, and thermal stability of thin films based on (Al,Ta,Ti,V,Zr) with different Al contents.
For coating synthesis, we used a single powder-metallurgically produced composite target and additional Al cubes placed along the racetrack to increase the Al content within the coatings. The coatings in as-deposited state show a fine-columnar growth and crystallise in a single-phase face-centred cubic (fcc) structure. The hardness of our coatings in as-deposited state is ~32.8 GPa and relatively independent on the Al-content. We studied the influence of the Al content on the thermal stability by investigating the structural evolution of our XRD, as well as nanoindentation. The study reveals a distinct influence of the Al-content on the decomposition of the solid solution into an fcc-matrix and Al-rich domains.
en
dc.language.iso
en
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dc.subject
high-entropy ceramics
en
dc.subject
thermal stability
en
dc.subject
PVD
en
dc.subject
hard coating
en
dc.title
Influence of Al-content on structure, mechanical properties and thermal stability of reactively sputtered AlTaTiVZr high-entropy nitride coatings
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.contributor.affiliation
Plansee (Germany), Germany
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dc.type.category
Conference Presentation
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tuw.researchinfrastructure
Röntgenzentrum
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tuw.researchinfrastructure
Universitäre Service-Einrichtung für Transmissionselektronenmikroskopie
