Effects of nitrogen content on microstructure and mechanical properties of DC magnetron sputtered Cr-Mn-Mo-Si-Y-(N) high entropy coatings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00140515" target="_blank" >RIV/00216224:14310/25:00140515 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0257897225000167?dgcid=coauthor" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0257897225000167?dgcid=coauthor</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfcoat.2025.131742" target="_blank" >10.1016/j.surfcoat.2025.131742</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of nitrogen content on microstructure and mechanical properties of DC magnetron sputtered Cr-Mn-Mo-Si-Y-(N) high entropy coatings

Popis výsledku v původním jazyce

This study investigates Cr-Mn-Mo-Si-Y-(N) high-entropy alloy and high-entropy nitride coatings, combining strong and weak nitride-forming elements with large atomic radii differences. The coatings are deposited using reactive DC magnetron sputtering in an Ar/N2 atmosphere. The research examines the effects of varying N2 flow rates, substrate temperatures, and bias. The coatings are stabilized by nitrogen vacancies as N content saturated under 45 at.%. It is observed that bias does not influence chemical composition or structure. Nanostructure analysis reveals that coatings are composed of Cr-Mo-rich with nanocrystallites and amorphous Si-Mn-rich nanolayers. Crystallization occurs in coatings that contain at least 40 at.%. of N and are deposited at 580°C. The mechanical properties improve with nitrogen incorporation and 580°C substrate temperature, achieving peak hardness and reduced modulus of 15.5 and 195.1 GPa, respectively. Elastic HIT/Er and plastic HIT3/Er2 deformation parameters reach values up to 0.09 and 0.12 GPa, respectively. The results suggest that the high content of Mn, which is a weak nitride former, and the lattice distortion caused by Si and Y, hindered long-range ordering. The study highlights that nitrogen content strongly governs the properties of high-entropy nitride coatings, offering first insights into this novel material system.

Název v anglickém jazyce

Effects of nitrogen content on microstructure and mechanical properties of DC magnetron sputtered Cr-Mn-Mo-Si-Y-(N) high entropy coatings

Popis výsledku anglicky

This study investigates Cr-Mn-Mo-Si-Y-(N) high-entropy alloy and high-entropy nitride coatings, combining strong and weak nitride-forming elements with large atomic radii differences. The coatings are deposited using reactive DC magnetron sputtering in an Ar/N2 atmosphere. The research examines the effects of varying N2 flow rates, substrate temperatures, and bias. The coatings are stabilized by nitrogen vacancies as N content saturated under 45 at.%. It is observed that bias does not influence chemical composition or structure. Nanostructure analysis reveals that coatings are composed of Cr-Mo-rich with nanocrystallites and amorphous Si-Mn-rich nanolayers. Crystallization occurs in coatings that contain at least 40 at.%. of N and are deposited at 580°C. The mechanical properties improve with nitrogen incorporation and 580°C substrate temperature, achieving peak hardness and reduced modulus of 15.5 and 195.1 GPa, respectively. Elastic HIT/Er and plastic HIT3/Er2 deformation parameters reach values up to 0.09 and 0.12 GPa, respectively. The results suggest that the high content of Mn, which is a weak nitride former, and the lattice distortion caused by Si and Y, hindered long-range ordering. The study highlights that nitrogen content strongly governs the properties of high-entropy nitride coatings, offering first insights into this novel material system.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/GA23-05947S" target="_blank" >GA23-05947S: Teorií směřované studium povlaků keramik stabilizovaných vysokou entropií založených na těžkotavitelných kovech</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Surface and Coatings Technology

ISSN

0257-8972

e-ISSN

1879-3347

Svazek periodika

497

Číslo periodika v rámci svazku

February

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

001424285600001

EID výsledku v databázi Scopus

2-s2.0-85214800704