Insight into high temperature performance of magnetron sputtered Si-Ta-C-(N) coatings with an ion-implanted interlayer
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F21%3A00348763" target="_blank" >RIV/68407700:21230/21:00348763 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.apsusc.2020.148526" target="_blank" >https://doi.org/10.1016/j.apsusc.2020.148526</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apsusc.2020.148526" target="_blank" >10.1016/j.apsusc.2020.148526</a>
Alternative languages
Result language
angličtina
Original language name
Insight into high temperature performance of magnetron sputtered Si-Ta-C-(N) coatings with an ion-implanted interlayer
Original language description
Challenges related to the application of wear resistant coatings at high temperatures require the development of novel materials with an exceptional combination of mechanical, chemical and tribological properties. The present paper is focused on understanding of relationships between structure, composition and high-temperature performance of the Si-Ta-C-(N) coatings. The coatings were produced using combined magnetron sputtering (MS) and ion implantation (CMSII) technique. It was found that ion implanted coatings demonstrated better thermal shock resistance compared to MS Si Ta C (N) coatings. The Si-Ta-C-(N) coatings revealed a nanocomposite structure consisting of 2-3 nm fcc TaC(N) grains and amorphous a-Si and a-SiC(N) phases. The composition and structure of amorphous matrix and nanocrystallites strongly affected tribological performance of the Si-Ta-C-(N) coatings. The N-doped coatings exhibited exceptionally good tribological performance due to a higher ductility of N-rich amorphous a-SiCN and a-SiNx matrix, and fcc Ta(C,N)-based crystallites compared with the a-Si + a-SiC, and fcc TaC-based phases in N-free coating. The Si-Ta-C-(N) coatings easily withstood oxidation annealing at 800 degrees C due to the formation of a 200 nm protective TaSiOx amorphous layer. Oxidation annealings revealed that under thin protective TaSiOx layer crystalline components of coatings did not change when Si and C from the amorphous matrix started to diffuse towards the substrate at 800 degrees C but even after redistribution of elements and formation of oxide scale the coatings demonstrated reasonably high hardness - 13-16 GPa. Triboactivated formation of TaSiOx fibers which could slide/roll against the same TaSiOx tribolayer during high-temperature tribotests resulted in low coefficient of friction values (0.23 at 800 degrees C) and absence of wear.
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/EF16_026%2F0008396" target="_blank" >EF16_026/0008396: Novel nanostructures for engineering applications enabled by emerging techniques supported by advanced simulations</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Surface Science
ISSN
0169-4332
e-ISSN
1873-5584
Volume of the periodical
541
Issue of the periodical within the volume
March
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
11
Pages from-to
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UT code for WoS article
000608509400005
EID of the result in the Scopus database
2-s2.0-85097074552