Tribological Properties at 20 and 500°C of TiN and CrN Cathodic ARC Coatings Deposited on Ti-6Al-4V Alloy

Tribological properties of TiN and CrN coatings deposited by cathodic arc method at three different bias potentials -50, -150 and -300V on Ti-6Al-4V alloy in pair with alumina have been investigated. X-ray diffraction analysis showed that single-phase textured cubic nitrides of TiN and CrN were form...

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Bibliographic Details
Published in:East European journal of physics no. 1; pp. 380 - 385
Main Authors: Klimenko, Illya O., Belous, Vitaliy A., Podhurska, Viktoriya Ya, Ostash, Orest P., Ovcharenko, Valeriy D., Tolmachova, Galyna N., Kolodiy, Igor V., Ishchenko, Mykhailo G., Babayev, Ivan M., Kuprin, Oleksandr S.
Format: Journal Article
Language:English
Published: V.N. Karazin Kharkiv National University Publishing 05.03.2024
Subjects:
bias potential
cathodic arc deposition
friction coefficient
nanohardness
nitride coatings
structure
titanium alloy
wear
ISSN:2312-4334, 2312-4539
Online Access:Get full text
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Summary:Tribological properties of TiN and CrN coatings deposited by cathodic arc method at three different bias potentials -50, -150 and -300V on Ti-6Al-4V alloy in pair with alumina have been investigated. X-ray diffraction analysis showed that single-phase textured cubic nitrides of TiN and CrN were formed in these coatings. It is shown that the friction coefficient of the coatings is practically equal to that established for the Ti6Al4V alloy, but the wear rate is more than an order of magnitude lower than for the titanium alloy substrate. Coatings deposited at a potential of -50 V show optimal tribological properties at temperatures 20 and 500°C. Friction coefficients for TiN coatings are 0.4-0.8 at 20°C and 0,75 at 500°C; for CrN coatings they are 0.5 at 20°C and 0,7 at 500°C. Wear rates for TiN coatings are 0.86·10-5 мм3/Нм at 20°C and 3.56·10-5 мм3/Нм at 500°C; for CrN coatings they are 1.43·10-5 мм3/Нм at 20°C and 7.13·10-5 мм3/Нм at 500°C.
ISSN:2312-4334
2312-4539
DOI:10.26565/2312-4334-2024-1-38