Effect of Vacuum Ion-Plasma Treatment on Surface Layer Structure, Corrosion and Erosion Resistance of Titanium Alloy with Intermetallic a2-Phase
| Autor: | S. S. Slezov, Yu. V. Chernyshova, S. M. Sarychev, A. M. Mamonov |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Alloy Metallurgy Metals and Alloys Intermetallic Titanium alloy 02 engineering and technology Nitride engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Corrosion 020303 mechanical engineering & transports 0203 mechanical engineering Coating Mechanics of Materials engineering Surface layer 0210 nano-technology Nitriding |
| Zdroj: | Metal Science and Heat Treatment. 60:290-296 |
| ISSN: | 1573-8973 0026-0673 |
| DOI: | 10.1007/s11041-018-0274-6 |
| Popis: | Results are provided for a study of the effect of vacuum ion-plasma nitriding on the phase composition, structure, microhardness, salt corrosion resistance, and erosion resistance of alloy Ti – 14Al – 3Nb – 3V – 0.5Zr with an original bimodal structure and different surface microgeometry. It is shown that with an increase in nitriding temperature from 550 to 650°C the content of Ti2N nitrides in the surface layer increases and Ti3AlN nitride in formed, which raises the microhardness but reduces the thickness of the hardened diffusion zone; pores appear in the surface at 650°C. Vacuum ion-plasma nitriding is shown to raise substantially the resistance of specimens of alloy Ti – 14Al – 3Nb – 3V – 0.5Zr with a polished surface to salt corrosion. Additional nitriding after deposition of a TiN coating improves ground specimens salt corrosion resistance. Vacuum ion-plasma nitriding with additional deposition of a TiN coating increases the resistance of specimens with polished and ground surfaces to erosive action. |
| Databáze: | OpenAIRE |
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