Supersonic DC plasma torch for deposition of high-density wear-resistant coatings
| Autor: | Victor Kuz'min, Oleg Kovalev, Sergey Vashchenko, Andrey Tuezov, Elena Kornienko, Igor Gulyaev, Dmitriy Sergachev, Boris Palagushkin |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Intermetallic 02 engineering and technology Plasma 021001 nanoscience & nanotechnology 01 natural sciences chemistry.chemical_compound chemistry Plasma torch Tungsten carbide 0103 physical sciences Deposition (phase transition) Supersonic speed Composite material 0210 nano-technology Porosity Choked flow |
| Zdroj: | Materials Today: Proceedings. 19:2152-2156 |
| ISSN: | 2214-7853 |
| Popis: | The results of the development of the supersonic plasma torch for deposition of high-density functional coatings are presented. It was established that the use of a supersonic flow permits to raise the average velocity of the sprayed particles from 300 m/s to 700 m/s and more. The heat resistance studies results of the intermetallic Ni-Al coatings sprayed in subsonic and supersonic regimes are presented. The metallographic studies results of coatings from tungsten carbide sprayed with supersonic flow of air plasma are also presented. It was shown that the porosity of the high-hard coatings was less than 0.4%. |
| Databáze: | OpenAIRE |
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