Detailed Information on Publication Record
2024
Synthesis and characterization of ceramic high entropy carbide thin films from the Cr-Hf-Mo-Ta-W refractory metal system
STASIAK, Tomasz, Stanislava DEBNÁROVÁ, Shuyao LIN, Nikola KOUTNÁ, Zsolt CZIGÁNY et. al.Basic information
Original name
Synthesis and characterization of ceramic high entropy carbide thin films from the Cr-Hf-Mo-Ta-W refractory metal system
Authors
STASIAK, Tomasz (616 Poland, belonging to the institution), Stanislava DEBNÁROVÁ (703 Slovakia, belonging to the institution), Shuyao LIN, Nikola KOUTNÁ, Zsolt CZIGÁNY, Katalin BALÁZSI, Vilma BURŠÍKOVÁ (203 Czech Republic, belonging to the institution), Petr VAŠINA (203 Czech Republic, belonging to the institution) and Pavel SOUČEK (203 Czech Republic, guarantor, belonging to the institution)
Edition
Surface and Coatings Technology, Elsevier B.V. 2024, 0257-8972
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10305 Fluids and plasma physics
Country of publisher
Switzerland
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 5.400 in 2022
Organization unit
Faculty of Science
UT WoS
001240841000001
Keywords in English
High entropy carbide; High entropy alloy; Multicomponent ceramics; Multicomponent material; Thin film; Magnetron sputtering
Tags
Tags
International impact, Reviewed
Změněno: 14/6/2024 15:14, Mgr. Marie Šípková, DiS.
Abstract
V originále
We use reactive DC magnetron sputtering to showcase synthesis strategies for multicomponent carbides with the NaCl-type fcc structure and illustrate how deposition conditions allow controlling the formation of metallic and ceramic single phases in the Cr-Hf-Mo-Ta-W system. The synthesis is performed in argon flow and different acetylene flows from 0 to 12 sccm, at ambient and elevated temperatures (700 °C), respectively, hindering/promoting the adatom diffusion. Structural and microstructural investigations reveal the formation of the bcc metallic phase (a = 3.188−3.209 Å) in films deposited without acetylene flow, also supported by ab initio density function theory (DFT) analysis of lattice parameters as a function of the C content. Experimentally, a bcc-to-fcc phase transition is observed through the formation of an amorphous coating. Contrarily, samples deposited in higher acetylene flow show an fcc multielement carbide phase (a = 4.33−4.49 Å). The crystalline films reveal columnar morphology, while the amorphous ones are very dense. We report promising mechanical properties, with hardness up to 25 ± 1 GPa. The indentation moduli reach up to 319 ± 6 GPa and show trends consistent with DFT predictions. Our study paves the path towards the preparation of Cr-Hf-Mo-Ta-W multicomponent carbides by magnetron sputtering, showing promising microstructure as well as mechanical properties.
Links
GA23-05947S, research and development project |
| ||
LM2018097, research and development project |
|