J 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
Name: Teorií směřované studium povlaků keramik stabilizovaných vysokou entropií založených na těžkotavitelných kovech
Investor: Czech Science Foundation
LM2018097, research and development project
Name: Centrum výzkumu a vývoje plazmatu a nanotechnologických povrchových úprav (Acronym: CEPLANT)
Investor: Ministry of Education, Youth and Sports of the CR