Specific Features of the Microstructure and Properties of Multielement Nitride Coatings Based on TiZrNbAlYCr


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Аннотация

Multicomponent nanostructured coatings based on (TiZrNbAlYCr)N with a hardness as high as 47 GPa were obtained by cathodic arc deposition. The effect of partial nitrogen pressure PN (with constant bias potential Ub =–200 V applied to the substrate) on the phase-composition variation, the size of crystallites, and their relation to the microstructure and hardness was investigated. An increase in the nitrogen pressure resulted in the formation of two phases with characteristic BCC (the lattice period is 0.342 nm) and FCC lattices with averaged nanocrystallite sizes of 15 and 2 nm. At a high pressure of 0.5 Pa, crystallites in the FCC phase with a lattice period of 0.437 nm grew in size to ~7 nm. The hardness of deposited coatings with larger (3.5 nm) FCC-phase crystallites and smaller (7 nm) BCC-phase crystallites was enhanced considerably.

Об авторах

A. Pogrebnjak

Sumy State University

Автор, ответственный за переписку.
Email: alexp@i.ua
Украина, Sumy, 40007

V. Beresnev

Karazin Kharkiv National University

Email: alexp@i.ua
Украина, Kharkiv, 61022

O. Bondar

Sumy State University

Email: alexp@i.ua
Украина, Sumy, 40007

Ya. Kravchenko

Sumy State University

Email: alexp@i.ua
Украина, Sumy, 40007

B. Zhollybekov

Berdakh Karakalpak State University

Email: alexp@i.ua
Узбекистан, Nukus, 230112

A. Kupchishin

Abai Kazakh National Pedagogical University

Email: alexp@i.ua
Казахстан, Almaty, 050010


© Pleiades Publishing, Ltd., 2018

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