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Phase composition and morphology of the titanium/nitrogen-carbon coatings with a gradient of alloying elements concentration

Keywords:

D.G. Piliptsov – Ph.D. (Eng.), Associate Professor, F. Scorina Gomel State University; International Chinese-Belarusian Scientific Laboratory by Vacuum-Plasma Technologies,
E-mail: pdg_@mail.ru
А.V. Rogachev – Corresponding Member of NASB, Dr.Sc. (Chem.), Professor, Director of the Research Physico-Chemical Institute, F. Scorina Gomel State University; International Chinese-Belarusian Scientific Laboratory by Va-cuum-Plasma Technologies
E-mail: rogachevav @mail.ru
А.S. Rudenkov – Ph.D. (Eng.), Senior Research Scientist, F. Scorina Gomel State University; International Chinese-Belarusian Scientific Laboratory by Vacuum-Plasma Technologies
E-mail: arudenkov05@gmail.com
Е.А. Kulech – Junior Researcher Scientist, F. Scorina Gomel State University; International Chinese-Belarusian Scien-tific Laboratory by Vacuum-Plasma Technologies
E-mail: katrinamillers29@mail.ru
Xiaohong Jiang ‒ Head of Department, International Chinese-Belarusian scientific laboratory on vacuum-plasma tech-nology, Nanjing University of Science and Technology (Nanjing, China)
E-mail: jxh@inbox.ru
P.A. Luchnikov – Senior Researcher, Moscow Technological University
Е-mail: xamdex@gmail.com


Raman spectroscopy, atomic force microscopy determined the phase composition, microstructure of nanocomposite gradient coatings on the basis of carbon, titanium, nitrogen, obtained under various regimes of plasma flow generation. The features of the transformation of the structure of the upper layer are determined depending on the presence of nitrogen or titanium atoms in it. It is shown that the introduction of molecular nitrogen into the gradient titanium-carbon coating leads to an increase in the number of carbon atoms in the state with sp2 hybridization, and a decrease in the size of sp2 clusters of carbon. Based on the analysis of Raman spectra, it was concluded that the resulting chemical compounds Ti-N, Ti-C, Ti-CN significantly influence the sp2 clustering of carbon atoms. In comparison with a single-component carbon coating, the Ti / ɑ-C layers have a higher roughness, which is due to the presence of a drop phase in the titanium atom stream.

References:
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  7. Rudenkov А.S., Piliptsou D.G., Luchnikov P.A., Rogachev A.V., Xiaohong Jiang, Fedosenko N.N. The influence of the ion plasma flow onthe phase composition and microhardness of carbon coatings doped with metals // IOP Conf. Series: Materials Science and Engineering. 2018. V. 289. P. 012036. DOI:10.1088/1757-899X/289/1/012036.
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June 24, 2020
May 29, 2020

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