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Parametric study on electrical discharge coating of 7075 aluminium with WS2/Cu electrode

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Abstract

High-hardness materials that are challenging to machine using traditional machining methods are frequently machined using the modern machining technology known as EDM. An exclusive characteristic changing the surface of the workpiece by electrode transfer in EDM with reverse polarity is known as electro discharge coating (EDC). EDC is a cutting-edge method for surface modification that modify surface of any material to enhance existing surface qualities or add new surface functionalities. The present study analyzes the coating characteristics of tungsten disulfide (WS2) and copper (Cu) coated AA7075 by EDC. Coating was carried out based on face-centered central composite design, employed with multiple EDC parameter combinations to assess the output properties such as deposition rate (DR) and micro hardness (MH). According to the experimental findings, the DR and MH rise when the current and pulse length are increased. In contrast, DR increases and MH decreases as pulse off time increases. A scanning electron microscope has examined the surface topography of a coating (SEM). In order to explore the element transfer and diffusion from the electrode onto the substrate, energy dispersive spectroscopy has been used.

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Authors and Affiliations

  1. Department of Manufacturing Engineering, Annamalai University, Chidambaram, 608002, India

    K. Shanmugaelango & C. Senthilkumar

  2. St.Anne’s College of Engineering and Technology, Panruti, 607110, India

    R. Arokiadass

Authors
  1. K. Shanmugaelango
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  2. C. Senthilkumar
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  3. R. Arokiadass
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Correspondence to K. Shanmugaelango.

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Shanmugaelango, K., Senthilkumar, C. & Arokiadass, R. Parametric study on electrical discharge coating of 7075 aluminium with WS2/Cu electrode. Int J Interact Des Manuf 17, 3059–3067 (2023). https://doi.org/10.1007/s12008-023-01339-z

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  • DOI: https://doi.org/10.1007/s12008-023-01339-z

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