Home FOR AUTHORS Kovove Materialy-Metallic Materials 2011 Metallic Materials Vol. 49 (2011), no. 4, pp.265-270

Journal info

Select Journal







Webshop Cart

Your Cart is currently empty.

Info: Your browser does not accept cookies. To put products into your cart and purchase them you need to enable cookies.

Metallic Materials Vol. 49 (2011), no. 4, pp.265-270

Title: Effect of pulse shape and energy on the surface roughness and mass transfer in the electrospark coating process
Author: K. KORKMAZ, A. V. RIBALKO

Abstract: The electrospark deposition process is used to improve wear performance and corrosion resistance of metal surfaces. In this study, a tungsten carbide (WC-92Co-8) coating deposited on a steel (St37) substrate using the ESD process has been carried out. Some technological parameters of coating, such as mass transfer, roughness, and diameter of droplets (splashes) that depend on pulse shapes (rectangular and triangular) and pulse energies were investigated. Amplitudes of current electrical pulse range changed from 50 to 250 A for both kinds of pulse shapes. It was found that conventional rectangular pulses were not very useful shapes for maximum mass transfer, whereas it was possible with triangular pulses to obtain maximum mass transfer results. On the other hand, the triangular pulses produced more rough surfaces than the rectangular pulses.

Keywords: electrospark deposition, micro-arc welding, coating, pulse forms
Year: 2011, Volume: 49, Issue: 4 Page From: 265, Page To: 270
doi:10.4149/km_2011_4_265


download file



© AEPress s.r.o
Copyright notice: For any permission to reproduce, archive or otherwise use the documents in the ELiS, please contact AEP.