Structural and Tribology Properties of Ti-Al-C Coatings Deposited by Vacuum Arc Method

Abstract:

The composition, structure, and tribological characteristics at 20 °C and 500 °C of coatings obtained by the vacuum arc deposition method using a MAX phase Ti₂AlC based cathode were investigated. These characteristics were compared to those of titanium nitride coating. It was shown that at a potential of -50 V, a composite coating of TiC and Ti₃AlC phases forms. Meanwhile, at a potential of -100 V, a composite consisting of TiC and α-Ti is formed. At 20 °C, the friction coefficient and specific wear rate of these coatings in contact with a ball made of ShKh15 steel under a load of 2 N are comparable to those of TiN coating. At 500 °C, the wear resistance of the composite (TiC+α-Ti) coating is twice as high as that of TiN coatings. There was no clear correlation between microhardness and the tribological characteristics of the coatings.

• Periodical: Solid State Phenomena (Volume 355)
• Pages: 107-115
• DOI: https://doi.org/10.4028/p-w89OBM
• Online since: February 2024
• Authors: Viktoriya Podhurska*, Oleksandr Kuprin, Margarita Bortnitskaya, Orest Ostash, Tetiana Prikhna, Roman Chepil, Volodymyr Sverdun, Igor Kolodiy, Vitaliy Belous
• Keywords: Coatings, Friction Coefficient, Nanohardness, Temperature, Titanium MAX Phase, Vacuum Arc Deposition, Wear

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