2026-06-08T08:27:46Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/68772023-08-27T07:15:48Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Daavari, Morteza
author
Atapour, Masoud
author
Mohedano Sánchez, Marta
author
Arrabal Durán, Raúl
author
Matykina, Endzhe
author
Taherizadeh, Aboozar
2023-06-17T08:22:57Z
2023-06-17T08:22:57Z
2021-03-05
2468-0230
10.1016/j.surfin.2020.100850
https://hdl.handle.net/20.500.14352/6877
https://doi.org/10.1016/j.surfin.2021.101070
https://www.sciencedirect.com/science/article/pii/S2468023020308427
Over the last two decades, various methods have been developed for surface modification of Mg alloys among which plasma electrolytic oxidation (PEO) is one of the most effective methods for tailoring surface properties. However, PEO coatings still need to be improved in various aspects, including mechanical and corrosion performances. In the current study, multi-walled carbon nanotubes (MWCNTs) were incorporated into a PEO coating structure via one-step process. Characterization techniques in this study included scanning electron microscopy (SEM), Raman spectroscopy and X-ray diffraction (XRD). Corrosion behavior was evaluated by electrochemical tests taking into account quasi-in vivo conditions in order to get closer to implant degradation rates in human body. Dry-wear and tribocorrosion in SBF were also evaluated in reciprocal ball-on-plate mode. According to the findings, MWCNTs induced several microstructural modifications in PEO coating such as formation of ~ 1 μm homogeneous dense barrier layer and irregular-shape porosities. Reinforcement significantly improved pitting corrosion resistance of the PEO coating, yielded a low friction coefficient and decreased wear-related damage by 60%.
eng
Atribución-NoComercial-SinDerivadas 3.0 España
Biotribology and biocorrosion of MWCNTs-reinforced PEO coating on AZ31B Mg alloy
journal article
URL
https://docta.ucm.es/bitstreams/46d2a70c-0f49-4a2c-a14d-cf8466a8131b/download
File
MD5
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application/pdf
SURFIN-D-20.pdf
URL
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File
MD5
18d6c5195902b287b3c05305ff3ad70f
55820
text/plain
SURFIN-D-20.pdf.txt