Improving the Wear Resistance of Thermally Sprayed Nanocomposite Cr3C2-25NiCr Coatings by Pulsed Plasma Treatment
| Authors | M.G. Kovaleva1 , V.V. Sirota2, V.M. Beresnev3 , Yu.N. Tyurin4 , O.N. Vagina1, I.A. Pavlenko1 |
| Affiliations |
1Belgorod National Research University, 85, Pobedy Str., 308015 Belgorod, Russia 2Belgorod State Technological University named after V.G. Shoukhov, 46, Kostyukov Str., 308012 Belgorod, Russia 3V.N. Karazin Kharkiv National University, 4, Svobody Sq., 61000 Kharkiv, Ukraine 4O. Paton Electric Welding Institute, NASU, 11, Bozhenko Str., 03650 Kyiv, Ukraine |
| Е-mail | Kovaleva@bsu.edu.ru |
| Issue | Volume 10, Year 2018, Number 6 |
| Dates | Received 04 October 2018; revised manuscript received 03 December 2018; published online 18 December 2018 |
| Citation | M.G. Kovaleva, V.V. Sirota, V.M. Beresnev, et al., J. Nano- Electron. Phys. 10 No 6, 06035 (2018) |
| DOI | https://doi.org/10.21272/jnep.10(6).06035 |
| PACS Number(s) | 68.37.Hk, 68.37.Yz, 62.20.Qp |
| Keywords | Hardmetal coating, Chromium carbide, Multi-chamber gas-dynamic accelerator (2) , Pulsed plasma treatment, Wear resistance (2) . |
| Annotation |
In this study the surfaces of thermally sprayed nanocomposite Cr3C2-25NiCr coating have been treated by the pulsed plasma. The nanocomposite Cr3C2-25NiCr coating was deposited by a new multi-chamber gas-dynamic accelerator on grit blasted steel substrate. An automatic pulse-plasma device “Impulse-6” was employed to plasma treatment the surface of Cr3C2-25NiCr coating. The microstructure and wear resistance of the surface of the nanocomposite Cr3C2-NiCr coating before and after the pulsed plasma treatment (PPT) was studied in this paper. Wear tests were carried out using a computer controlled pin-on-disc type tribometer at 25 ºC. The specific wear rate of the nanocomposite Cr3C2-25NiCr coating after PPT is approximately four times less than that of the Cr3C2-25NiCr coating before PPT, indicating that the nanocomposite Cr3C2-25NiCr coating after PPT exhibits better wear resistance. Detailed analysis indicates that the enhanced wear resistance of the nanocomposite Cr3C2-25NiCr coating after PPT is mainly attributed to the formation of an oxide tribolayer and smoother surface, which result from the dense and amorphous microstructure of the coating. |
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