Asian Journal of Physics  Vol. 31 No 2, 2022, 391-399

The characteristics of the carbon nanotubes layer deposited by the electrophoretic method on a titanium substrate studied by Raman micro-spectroscopy and nanoindentation
Maria Pajda, Aleksandra Wesełucha-Birczyńska, Sylvia Turrell, Aleksandra Benko and Marta Blażewicz


The multi-walled carbon nanotubes (MWCNT) layer deposited on the titanium surface in an electrophoretic process for 30 s and at a voltage of 30 V was investigated by Raman spectroscopy. The layer structure was analyzed by the depth scanning method. Some differences have been noticed between the top and bottom surfaces of the tested layer, i. e, at the MWCNTs / air interface and the MWCNTs / Ti interface, respectively. The MWCNTs / air interface shows the character of a graphite-like layer, probably due to the presence of shells with a large diameter, while the boundary at the interface of the MWCNTs layer with titanium indicates a characteristic of MWCNTs due to the G-band splitting and its dispersion. The observed shift of the G’-band towards the higher wavenumbers indicates a compressive strain on the layer of carbon nanotubes in contact with the titanium substrate. The measurements of the hardness of the obtained layer showed that the reaction of the material is much more plastic, because plastic work exceeds the value of elastic work up to 5 times. © Anita Publications. All rights reserved.
Keywords: Multi-walled carbon nanotubes (MWCNTs) layer, Electrophoretic deposition (EPD), Raman microspectroscopy, Nanoindentation.

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Method: Single- anonymous; Screened for Plagiarism? Yes
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