XIV
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International Conference on Molecular Spectroscopy, Białka Tatrzańska 2017
266
T3: P–12
Spectroscopic investigation on black glasses modified with multiwalled
carbon nanotubes
Magdalena Gawęda
1
, Elżbieta Długoń
1
, Piotr Jeleń
1
, Marta Błażewicz
1
,
and Maciej Sitarz
1
1
Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30
Mickiewicza Av., 30-059 Krakow, Poland, e-mail: mgaweda@agh.edu.pl
With the development of medicine, the need of the novel materials useful for therapy and
diagnostics is growing. Despite the great progress in the field of materials for osteosynthesis in
orthopedy or stomatology, the work on new solutions for the modifications of the implant
surfaces, especially the ones based on steel or titanium, is continued. Layers composed of
nanotubes coated by ceramized organosilicon polymer were the subject of the study. The
obtained material was characterised by specific topography, which might be additionally
controlled and tailored depending on the desired application. Moreover, obtained layers were
resistant to an oxidative environment and characterised high mechanical parameters, good
adhesion to the substrate and electrical conductivity [1].
The complete description of the obtained material was performed. Its structure and
properties (such as surface topography, surface free energy, adhesion to the substrate) were
analysed, as well as phenomena occurring on the interface matrix/carbon nanotubes.
The layers were deposited on the metallic surfaces by electrophoretic deposition (EPD)
method from the solution containing silsesquioxane sol and dispersed CNF [2]. Subsequently,
layers underwent the ceramization process in the protective atmosphere (pyrolysis) [3,4]. The
structure of the obtained layers was analysed in detail (Raman, FTIR, XPS) as well as their
microstructure (SEM, TEM, AFM, confocal microscopy). Vibrational spectroscopy (FTIR,
Raman) allowed designation of bonds occurring in the projected composite layers.
Microstructure examination (confocal microscope, SEM, TEM, AFM) enable determination of
the thickness of the layer and the state of the surface. One of the principal parameters of
designed coatings was their wettability, which might be controlled basing on analysis of the
shape of the droplet using goniometer. In order the precise determination of mechanical
parameters of the nanocomposite layers, the nanomechanical tests were performed basing on the
nanoindentation method. All of the obtained layers must be characterised by good tightness and
corrosion resistibility. Therefore, suitable corrosion tests in so-called Ringer solution were
performed.
All of the structural, microstructural, physicochemical parameter tests of the obtained
materials allowed determination of principal operational parameters of the designed functional
layers.
Keywords: CNT; silicon oxycarbide; spectroscopy; composite; EPD.
Acknowledgments
This work was supported by the NCN project “Functional layers of black glasses based on ladder-like
silsesquioxanes 2014/15/B/ST8/02827”.
References
[1] E. Dlugon, W. Simka, A. Fraczek-Szczypta, W. Niemiec, J. Markowski, M. Szymanska, M.
Blazewicz, Bull. Mater. Sci. 38 (2015) 1339.
[2] A. Fraczek-Szczypta, E. Dlugon, A. Weselucha-Birczynska, M. Nocun, M. Blazewicz, J. Mol. Struct.
1040 (2013) 238.
[3] M. Sitarz, W. Jastrzębski, P. Jeleń, E. Długoń, M. Gawęda, Spectrochim. Acta A 132 (2014) 884.
[4] P. Jeleń, M. Bik, M. Nocuń, M. Gawęda, E. Długoń, M. Sitarz, J. Mol. Struct. 1126 (2016) 172.
XIV
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International Conference on Molecular Spectroscopy, Białka Tatrzańska 2017
267
T3: P–13
Complementary characterization of amorphous metal surface during
preliminary preparation
Jolanta Nieroda
1,2
, Andrzej Rybak
2
, Grzegorz Kmita
2
, and Maciej Sitarz
1
1
Department of Silicate Chemistry and Macromolecular Compounds, AGH University of Science
and Technology, Faculty of Materials Science and Ceramics, al. Mickiewicza 30, 30-059 Krakow,
Poland, e-mail: jolanta.nieroda@agh.edu.pl
2
ABB Corporate Research Center, ul. Starowislna 13A, 31-038 Krakow, Poland
The amorphous metal is technically glass, however it is much tougher and less brittle than
regular oxide glasses and ceramics. The important commercial application of amorphous metals
is mainly due to its special magnetic properties (e.g. low-magnetization loss) and high electrical
conductive nature. The above mentioned properties are very useful in electrical engineering
industry and this material is more and more popular as a substance for high-efficiency
transformer core production. As in all technological processes, a raw material must be carefully
investigated and characterized before the main production part is started.
Presented work contains one step of preliminary preparation of amorphous metal film,
namely annealing and thus evaluation of creating useful oxide layer on studied surface. Time of
process was changed and four methods: Scanning Electron Microscopy, X-ray Diffraction, X-
ray Photoelectron Spectroscopy and Raman spectroscopy were used in order to choose an
appropriate parameters to create an oxide layer and simultaneously do not destroy amorphous
structure of material.
The systematic application of selected methods allow to select the most optimized
parameters of annealing process in order to prepare the amorphous metal surface before further
investigation.
Keywords: amorphous metal; Raman spectroscopy; X-ray photoelectron spectroscopy
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