Effects of nitrogen content on microstructure and mechanical properties of DC magnetron sputtered Cr-Mn-Mo-Si-Y-(N) high entropy coatings
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Effects of nitrogen content on microstructure and mechanical properties of DC magnetron sputtered Cr-Mn-Mo-Si-Y-(N) high entropy coatings
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20506 - Coating and films
Result continuities
Project
<a href="/en/project/GA23-05947S" target="_blank" >GA23-05947S: Ab-initio guided investigation of refractory metal-based high entropy ceramic coatings</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Surface and Coatings Technology
ISSN
0257-8972
e-ISSN
1879-3347
Volume of the periodical
497
Issue of the periodical within the volume
February
Country of publishing house
CH - SWITZERLAND
Number of pages
12
Pages from-to
1-12
UT code for WoS article
001424285600001
EID of the result in the Scopus database
2-s2.0-85214800704