Spark erosion in a metal spheres bed: Experimental study of the discharge stability and energy efficiency
| Autor: | Iakov Kornev, G L Lobanova, Vasily Ya. Ushakov, Sergei Preis, Filipp Saprykin |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Pulse repetition frequency Materials science Compaction 02 engineering and technology Intergranular corrosion 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Spark discharge Electrical discharge machining 0103 physical sciences Erosion SPHERES Electrical and Electronic Engineering Composite material 0210 nano-technology Biotechnology Efficient energy use |
| Zdroj: | Journal of Electrostatics. 96:111-118 |
| ISSN: | 0304-3886 |
| DOI: | 10.1016/j.elstat.2018.10.008 |
| Popis: | Pulsed spark discharge in metallic granular beds in aqueous media was studied for the granular bed geometry affecting the discharge parameters, stability and powder production. Experiments were carried out in horizontal bed and columnar reactors filled with 4-mm steel spheres. The pulse energy and the powder production depend on the bed height, showing its maximum within 9–14 mm growing with the pulse repetition frequency from 200 to 800 pulses per second and degrading in spark erosion time due to the bed vibrational compaction and accumulation of the erosion products short-circuiting intergranular gaps. |
| Databáze: | OpenAIRE |
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