Fretting wear mechanism of plasma-sprayed CNT-reinforced wollastonite-zirconia composite coatings for bioimplant applications
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F25%3A10002791" target="_blank" >RIV/47718684:_____/25:10002791 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.triboint.2025.111249" target="_blank" >https://doi.org/10.1016/j.triboint.2025.111249</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.triboint.2025.111249" target="_blank" >10.1016/j.triboint.2025.111249</a>
Alternative languages
Result language
angličtina
Original language name
Fretting wear mechanism of plasma-sprayed CNT-reinforced wollastonite-zirconia composite coatings for bioimplant applications
Original language description
This study investigates the fretting wear mechanisms of plasma-sprayed wollastonite-zirconia (CaSiO3-ZrO2, WaZr) composite coatings, both unreinforced and reinforced with carbon nanotubes (WaZr-CNT), for bioimplant applications. The developed coatings are compared with conventional hydroxyapatite (HA) coatings on titanium substrates. Microstructural analysis reveals that CNT reinforcement leads to a denser, more uniformly bonded WaZr-CNT coating through effective splat bridging and pore sealing. Mechanical characterization shows that WaZr-CNT coatings possess higher microhardness and lower elastic modulus than unreinforced WaZr coating.During fretting tests at a 200 µm displacement amplitude, the WaZr-CNT coating exhibited an approximately 83 % reduction in energy dissipation compared to HA coatings and a 75 % reduction compared to WaZr coatings, indicating significant improvement in fretting resistance. While HA and WaZr coatings underwent splat fracture and generated considerable amount of wear debris, the WaZr-CNT coating produced almost no debris and maintained intact splat boundaries. The novelty of this work lies in the development and evaluation of CNT-reinforced WaZr coatings that for the first time undergo fretting tests and demonstrate superior fretting wear resistance under cyclic sliding contact compared to unreinforced WaZr and conventional HA coatings.
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/EH23_021%2F0008594" target="_blank" >EH23_021/0008594: European Laboratory for Applied Research on Additive Spraying Technologies</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
Tribology International
ISSN
0301-679X
e-ISSN
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Volume of the periodical
2026/B/214
Issue of the periodical within the volume
February 2026
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
20
Pages from-to
nestránkováno
UT code for WoS article
001588137600001
EID of the result in the Scopus database
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