Supersonic air-plasma spraying of carbide ceramic coatings
| Autor: | Boris Palagushkin, Viktor Kuzmin, Anatoliy Lysakov, Sergey Vashchenko, Dmitriy Sergachev, Igor Gulyaev |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science 02 engineering and technology Plasma 021001 nanoscience & nanotechnology 01 natural sciences Carbide Plasma torch visual_art Phase (matter) 0103 physical sciences Thermal visual_art.visual_art_medium Supersonic speed Ceramic Composite material 0210 nano-technology Porosity |
| Zdroj: | Materials Today: Proceedings. 38:1974-1979 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2020.09.150 |
| Popis: | The results of the development of a cascaded DC plasma torch with a sectioned inter-electrode insert (IEI), which implements supersonic regimes of thermal plasma flows, are presented. A feature of the developed plasma torch is the use of air as the main working gas, as well as the injection of the sprayed material into the flow of thermal plasma using a ring input unit with gas-dynamic focusing of the dispersed phase. The results of metallographic studies of WC/10Co/4Cr coatings sprayed using supersonic air plasma flows are also presented. It is shown that the use of supersonic spraying modes allows one to obtain high-density coatings with almost zero porosity (less than 0.4%). |
| Databáze: | OpenAIRE |
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