Properties of Nanostructured TiNNi CeramicMetal Coatings
Obtained by Ion-Plasma Vacuum-Arc Method

I. V. Blinkov^a,*, A. O. Volkhonskii^a,**, D. S. Belov^a,***, V. I. Blinkov^b,****,
R. L. Shatalov^b,****, and V. A. Andreev^c,*****

^aNational University of Science and Technology “MISiS”, Leninskii pr. 4, Moscow, 119049 Russia

^bMoscow State Machine Building University, ul. Bol’shaya Semenovskaya 38, Moscow, 107023 Russia

^cOOO MATEK-SPF Industrial Center, ul. Kar’er 2a, str. 1, Moscow, 117449 Russia

*e-mail: biv@misis.ru

**e-mail: abvest@mail.ru

***e-mail: lightningn4s@yandex.ru

****e-mail: mmond@mail.ru

*****e-mail: andreev.ismateks@gmail.com

Abstract—Physicomechanical and tribological properties of TiN–Ni ceramic–metal coatings prepared by ion-
plasma vacuum-arc deposition are investigated. It is established that the hardness (H) increases from 23to 54
GPa with the Ni content from 0 to 12 at %, which is determined by the influence of the nanostructured nitride
component of coatings. Coefficients HE^–1 and H³E^–2, which characterize the material resistance against the
elastic and plastic failure deformation, reach 0.104 and 0.567 GPa, respectively. The further increase in the
nickel concentration in coatings to 26 at % leads to a decrease in H to 23–25 GPa, which is associated with the
influence of the increasing amount of soft plastic metal and the formation of noticeable porosity in the bulk of
coatings. The friction coefficient of studied coatings is 0.45, against 0.58 (for the TiN coating) and 0.72 (for the
hard-alloy base). The cohesion failure mechanism of TiN–Ni nanostructured coatings (C_Ni = 2.8–12 at %) is
established, and critical loads which characterize the appearance of the first crack (13.5–14.2 N) and the local
coating attrition up to the substrate (61.9–64.4 N) are determined. The complete attrition of coatings does not
occur up to a load of 90 N, which points to their high adhesion strength. The developed nanostructured ceramic–
metal coatings are characterized by high heat resistance up to 800C.

Keywords: nanoindentation, hardness, elasticity modulus, adhesion, cohesion, heat resistance, nanostructuring,
elastic failure resistance, plastic failure resistance

DOI: 10.3103/S1067821214050058

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