The Paton Welding Journal 2013

The Paton Welding Journal ¹07 2013

2013 ¹07 (03) 2013 ¹07 (05)

TPWJ, 2013, #7, 24-30 pages

Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                       0957-798X (print)
Issue                       ¹ 7, 2013 (July)
Pages                       24-30

1E.O. Paton Electric Welding Institute, NASU. 11 Bozhenko Str., 03680, Kiev, Ukraine. E-mail:
2V.E. Lashkaryov Institute of Semiconductor Physics, NASU. 41 Nauka Ave., 03028, Kiev, Ukraine. E-mail:
3I.M. Frantsevich Institute of Problems of Materials Science, NASU. 3 Krzhizhanovsky Str., 03142, Kiev, Ukraine. E-mail:

One of the main directions in current progress of surface engineering is development of a nanocomposite structure, with at least one phase with less than 100 nm size of structural element among its components. Presence of a multiphase structure with dissimilar grain boundaries creates a barrier for their coarsening, thus providing stability of the formed coating structure. This work is devoted to investigation of the process of formation of a nanocomposite nc-TiC/a-C coating on substrates from 08Kh18N10T, Kh12M steels and VT1-0 titanium by the method of magnetron sputtering of graphite and titanium targets. In order to control the coating composition, a design procedure was developed, which envisages a change of power of magnetron discharge with titanium target at constant power of discharge with graphite target, that would allow producing coatings in the range of compositions of 42.5-70 at.% C and 57.5-30 at.% Ti. Coatings were studied by the methods of X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy and microindentation. It is established that nanocrystalline TiC phase takes up 80 % and amorphous carbon matrix is 20 % of the coating structure. It is found that the degree of carbon ordering depends on coating composition. It is shown that the size of TiC grain and coating hardness depend on Ti/C ratio. Minimum size of TiC grain (2.9-4.3 nm) and maximum hardness (up to 30-38 GPa) are achieved at Ti/C ratio (in at.%) of 46/54. Maximum normalized hardness H/E* = 0.134, which is the characteristic of coating material resistance to plastic deformation, is achieved on the substrate of 08Kh10N10T steel. 19Ref., 3 Tables, 7 Figures.

Keywords: nanocomposite coating, magnetron sputtering, titanium carbide, amorphous carbon, grain size, structure, hardness

Received:                28.05.13
Published:                28.07.13

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8. Zhang, S., Sun, D., Fu, Y. et al. (2003) Recent advances of superhard nanocomposite coatings: a review. Ibid., 167, 113-119.
9. Zehnder, T., Patscheider, J. (2000) Nanocomposite TiC/a-C:H hard coatings deposited by reactive PVD. Ibid., 133/134, 138-144.
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18. Firstov, S.A., Gorban, V.F., Pechkovsky, E.P. (2009) New methodology of processing and analysis of results of automatic material indentation. Kiev: Logos.
19. Ferrari, A., Robertson, J. (2000) Interpretation of Raman spectra of disordered and amorphous carbon. Phys. Rev. B, 61(20), 14095-14107.


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