Effect of Peak Current and Pulse On Time on the Coating Layer Thickness using Electrical Discharge Coating

Abstract

The present study focused on the surface modification of aluminum 6061 by using electrical discharge coating (EDC) with powder suspension. The effects of peak current (Ip) and pulse on time (Ton) on the coating layer thickness were investigated. This study used Tungsten powder as an additive and mixed it with the kerosene oil and surfactant Span 83. The results indicated that peak current and pulse on-time significantly affected the coating layer thickness. The thinnest coating layer was observed at 3A, 150 µs, while the thickest coating layer with an average value of 17.239 µm was obtained at parameter 4A and 250 µs. In conclusion, the high value of peak current and longer pulse duration on time increased the thickness of the coating layer.

The Effect of Surface Texture on Teflon as Electrification Layer of 360° Lateral-Sliding Mode Triboelectric Generator

“…The purposes of the surface modification process are to improve the wear resistance against degradation, biocompatibility, surface wettability, and electroconductivity. There are numerous techniques of surface modifications, such as electrical discharge machining (EDM), thermal spraying, physical vapour deposition (PVD), chemical vapour deposition (CVD), electroplating, laser coating, electron-beam irradiation, and sputtering [18]. However, in this preliminary study on TEG, the surface of negative tribo-material was modified by texturing with different sandpaper grit numbers.…”