Resistance to High-Temperature Gas Corrosion of Сhromaluminizing Coatings with a (Ti, Zr)N Layer on Nickel
| Authors | I. Pohrebova1 , T. Loskutova1,2 , N. Kharchenko3 , S. Marchenko3, T. Hovorun3 , Ye. Myropolska4 |
| Affiliations |
1National Technical University of Ukraine “I. Sikorsky Kyiv Polytechnic Institute”, 03056 Kyiv, Ukraine 2Otto-von-Guericke University Magdeburg, 39106, Magdeburg, Germany 3Sumy State University, 40007 Sumy, Ukraine 4I. K. Karpenko-Karyi Kyiv National University of Theatre, Cinema and Television, 01054 Kyiv, Ukraine |
| Е-mail | hovorun@pmtkm.sumdu.edu.ua |
| Issue | Volume 17, Year 2025, Number 2 |
| Dates | Received 12 January 2025; revised manuscript received 15 April 2025; published online 28 April 2025 |
| Citation | I. Pohrebova, T. Loskutova, N. Kharchenko, et al., J. Nano- Electron. Phys. 17 No 2, 02028 (2025) |
| DOI | https://doi.org/10.21272/jnep.17(2).02028 |
| PACS Number(s) | 81.10. – h, 81.10.Dn, 61.43.Bn, 61.50.Ks, 81.30.Hd |
| Keywords | Barrier Layer, PVD (10) , Structure (105) , Heat Resistance, Microhardness (2) . |
| Annotation |
The structure, phase composition, distribution of chemical elements by thickness, microhardness, and heat resistance of chromaluminizing coatings of nickel were determined. The coating was applied in powder mixtures of chromium, aluminum, aluminum oxide Al2O3, and NH4Cl activator in containers with a fusible link at a temperature of 1050 °C for 4 hours. A layer of nitride (Ti, Zr)N was applied to some samples immediately before chemical heat treatment using the physical deposition method from the gas phase. It is shown that a multilayer coating of Al2O3, NiAl, and Ni3Al compounds is formed on the surface. The protec-tive layer of maximum thickness with a β-NiAl composition is formed as a result of chromoaluminizing and amounts to 50.0-52.0 μm. The maximum microhardness is determined for the nitride layer (Ti, Zr)N and is 22.5-23.5 GPa. In the presence of a layer of (Ti, Zr)N after chemical heat treatment, the latter is deformed and destroyed but retains its protective functions during heat resistance tests. The heat resistance of coatings, which was determined at a temperature of 1000 °C for 100 hours, for coatings with (Ti, Zr)N was 1.5 times higher than that of chrome-alloyed ones due to the barrier effect of nitride. |
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List of References |
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