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

Journal Article · Thu Feb 15 04:00:00 EST 2018 · Technical Physics Letters

DOI:https://doi.org/10.1134/S1063785018020098· OSTI ID:22786538

Beresnev, V. M. ^[1]; Bondar, O. V.; Kravchenko, Ya. O. ^[2]; Zhollybekov, B. ^[3]; Kupchishin, A. I. ^[4]

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1. Karazin Kharkiv National University (Ukraine)
2. Sumy State University (Ukraine)
3. Berdakh Karakalpak State University (Uzbekistan)
4. Abai Kazakh National Pedagogical University (Kazakhstan)

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 P{sub N} (with constant bias potential U{sub b} =–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.

• OSTI ID: 22786538
• Journal Information: Technical Physics Letters, Journal Name: Technical Physics Letters Journal Issue: 2 Vol. 44; ISSN 1063-7850
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ALUMINIUM NITRIDES
BCC LATTICES
CHROMIUM NITRIDES
COATINGS
DEPOSITION
FCC LATTICES
HARDNESS
MICROSTRUCTURE
NANOSTRUCTURES
NIOBIUM NITRIDES
PRESSURE RANGE GIGA PA
SUBSTRATES
TITANIUM NITRIDES
YTTRIUM NITRIDES
ZIRCONIUM NITRIDES