CeramicMetallic (TiNCu) Nanostructured Ion-Plasma
Vacuum-Arc Coatings for Cutting Hard-Alloy Tools

I. V. Blinkov*, A. O. Volkhonskii**, A. I. Laptev***, T. A. Sviridova****,
N. Yu. Tabachkova*****, D. S. Belov******, and A. V. Ershova

National University of Science and Technology “MISiS”, Leninskii pr. 4, Moscow, 119 049 Russia

*e-mail: biv@misis.ru

**e-mail: abvest@yandex.ru

***e-mail: laptev@misis.ru

****e-mail: tim-170@yandex.ru

*****e-mail: ntabachkova@gmail.com

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

Abstract—The structure and properties of TiN–Cu coatings with a broad range of copper concentrations (C_Cu
= 0.6–20 at %), which were fabricated by the ion-plasma vacuum-arc deposition on a TT10K8B hard-alloy tool,
including its cutting resistant tests, were investigated. The introduction of copper into the coating composition
diminishes crystallites of the nitride phase from 100 to 20 nm. The hardness of coatings increases from 20 to
40 GPa, with an increase in C_Cu to 7–8%. The further increase in the copper content, which is accompanied by
diminishing crystallites of the nitride phase, is characterized by a decrease in hardness to 14–15 GPa, which is
associated with the influence of soft plastic metal. Resistant cutting tests of steel 35KhGSA of removable mul-
tifaceted plates (RMP) with the TiN–Cu coatings indicate that the optimally selected composition (TiN–7–8 at
% Cu) increases RMP resistance more than by a factor of 6 and 2.5 as compared with tools without the coating
and with the TiN coating deposited according to the basic technology, respectively.

Keywords: ion-plasma deposition, coatings for cutting tools, structure and phase formation in the Ti–Cu–N sys-
tem, hardness of coatings, resistance of the coated tool, nanostructurization

DOI: 10.3103/S106782121405006X

Pleiades Publishing home page | journal home page | top

If you have any problems with this server, contact webmaster.