A Study on Deposition of Electrode Materials on Magnesium Alloy Using Electrical Discharge Coating Technique


  • Elaiyarasan U Department of Mechanical Engineering, Karpaga Vinayaga College of Engineering and Technology, Madhuranthagam, Tamil Nadu-603308, India
  • Satheeshkumar V Department of Mechanical Engineering, Government College of Engineering, Salem, Tamil Nadu-636011, India
  • Senthilkumar C Department of Mechanical Engineering, University College of Engineering, Panruti, Tamil Nadu-607106, India




Electrical discharge coating, Powder metallurgy, ZE41A magnesium alloy, Material migration rate, Layer thickness, SEM


In this present research, an attempt has been made to deposit the WC/Cu composite coating on the ZE41A magnesium alloy using electrical discharge coating technique. Tungsten carbide and copper powders with a particle size of 4 μm were used as the electrode materials. Electrodes are prepared in the combination of WC70: Cu30 under different load (150 MPa, 175 MPa, 200 MPa) using powder metallurgy technique. In this experiment, compaction pressure, current and pulse on time were selected as the input process parameters and response were material deposition rate (MDR), layer thickness (LT) and microhardness (MH). From the results, it was revealed that the MDR, LT and MH increase with an increase in discharge current and pulse on time and decreases with increases in compaction pressure. Microstructural evaluation on the deposited surface was performed by using scanning electron microscopy (SEM). More prominent craters formed in the deposited region results in the lower surface finish. Energy dispersive spectroscope (EDS) test was carried out to confirm the electrode materials deposited on the workpiece surface.


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Bilal, A., Jahan, M.P., Talamona, D. and Perveen, A. (2019), Electro-discharge machining of ceramics: A review, Micromachines, 10(1):10

Kuriachen, B., Somashekhar, K.P. and Mathew, J. (2015), Multiresponse optimization of micro-wire electrical discharge machining process. The International Journal of Advanced Manufacturing Technology, 76(1-4):91-104.

Muralidharan, B., Chelladurai, H., Singh, P. and Roy, M.K. (2016), Single-spark analysis of electro-discharge deposition process. Materials and Manufacturing Processes, 31(14):1853-1864.

Elaiyarasan, U., Satheeshkumar, V. and Senthilkumar, C. (2018), Modeling of electrical discharge coating parameters using artificial neural network. Journal of Advanced Microscopy Research, 13 (1):79-84.

Liew, P.J., Yan, J. and Kuriyagawa, T. (2013), Experimental investigation on material migration phenomena in micro-EDM of reaction-bonded silicon carbide. Applied Surface Science, 276:731-743.

Ahmed, A. (2016), Deposition and analysis of composite coating on aluminum using Ti–B4C powder metallurgy tools in EDM. Materials and Manufacturing Processes, 31(4):467-474.

Mussada, E.K. and Patowari, P.K. (2015), Investigation of EDC parameters using W and Cu powder metallurgical compact electrodes. International Journal of Machining and Machinability of Materials, 17(1):65-78.

Prakash, C., Singh, S., Pruncu, C.I., Mishra, V., Królczyk, G., Pimenov, D.Y. and Pramanik, A. (2019), Surface modification of Ti-6Al-4V alloy by electrical discharge coating process using partially sintered Ti-Nb electrode, Materials, 12(7):1006.

Huang, C.H., Yang, A.B. and Hsu, C.Y. (2018), The optimization of micro EDM milling of Ti–6Al–4V using a grey Taguchi method and its improvement by electrode coating. The International Journal of Advanced Manufacturing Technology, 96 (9-12):3851-3859

Mohanty, S., Kumar, V., Das, A.K. and Dixit, A.R. (2019), Surface modification of Ti-alloy by micro-electrical discharge process using tungsten disulphide powder suspension. Journal of Manufacturing Processes, 37:28-41.

Tijo, D., Kumari, S. and Masanta, M. (2017), Hard and wear resistance TiC-composite coating on AISI 1020 steel using powder metallurgy tool by electro-discharge coating process. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 39(11):4719-4734.

Siddique, A.R., Mohanty, S. and Das, A.K. (2019), Micro-electrical discharge coating of Titanium alloy using WS2 and Brass P/M electrode, Materials and Manufacturing Processes, 34 (15): 1761-1774.

Phan, N.H. and Muthuramalingam, T. (2020), Multi Criteria Decision Making of Vibration Assisted EDM Process Parameters on Machining Silicon Steel Using Taguchi-DEAR Methodology. Silicon, https://doi.org/10.1007/s12633-020-00573-4

Rao, P.S., Purnima, N.S. and Prasad, D.S. (2018), Surface alloying of D2 steel using EDM with WC/Co P/M electrodes made of Nano and Micron sized particles. Materials Research Express, 6 (3).

Elaiyarasan, U., Satheeshkumar, V. and Senthilkumar, C. (2019), Microstructure study on electro discharge deposited magnesium alloy with semi sintered and sintered electrode. Materials Research Express, 6 (12).

Chakraborty, S., Kar, S., Dey, V. and Ghosh, S.K. (2018), The phenomenon of surface modification by electro-discharge coating process: a review. Surface Review and Letters, 25 (01):1830003.

Elaiyarasan, U., Satheeshkumar, V. and Senthilkumar, C. (2018), Experimental analysis of electrical discharge coating characteristics of magnesium alloy using response surface methodology. Materials Research Express, 5 (8): 086501.




How to Cite

E. . U, S. V, and S. . C, “A Study on Deposition of Electrode Materials on Magnesium Alloy Using Electrical Discharge Coating Technique”, JME, vol. 15, no. 3, pp. 060–065, Sep. 2020.