Development and analysis of solid lubricant coating on M2 high-speed steel using the EDC process

This paper reports solid lubricant coating on the M2 high-speed steel substrate with MoS2:Cu (50:50) green compact electrode by electric discharge coating (EDC) process. The influence of input parameters (peak current(I) and pulse duration(ton)) on the coating responses (thickness, microhardness, and surface roughness) have been investigated. The coated materials atomic weight percentage and chemical compounds are examined through EDS and XRD analysis. The maximum coating thickness (695.3μm) was reported at ton − 750 μs and I- 5 A. The coated samples microhardness exhibit between 217.8 HV—669.43 HV, which is lesser than the substrate (750 HV). The adhesive strength of the coating surface was examined using the scratch test with the progressive load. The result shows, adhesive strength increased at higher current level.

[1]  B. Muralidharan,et al.  A thermophysical modelling of electric discharge coating process , 2022, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science.

[2]  S. Rao,et al.  Analysing the adhesion strength of Mo-WC-Cu-Si composite coated layer by using the scratch test , 2021, Materials Today: Proceedings.

[3]  A. Das,et al.  Formation of superhydrophobic surface with enhanced hardness and wear resistance by electrical discharge coating process , 2021 .

[4]  Sunpreet Singh,et al.  Surface Modification of Ti-6Al-4V Alloy by Electrical Discharge Coating Process Using Partially Sintered Ti-Nb Electrode , 2019, Materials.

[5]  B. Muralidharan,et al.  Investigation of magnetic field and shielding gas in electro-discharge deposition process , 2018, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science.

[6]  P. D. Brown,et al.  Wear performance of TiC/Fe cermet electrical discharge coatings , 2018 .

[7]  A. Das,et al.  Electrical discharge coating using WS2 and Cu powder mixture for solid lubrication and enhanced tribological performance , 2018 .

[8]  C. Prakash,et al.  Surface modification of β-phase Ti implant by hydroaxyapatite mixed electric discharge machining to enhance the corrosion resistance and in-vitro bioactivity , 2017 .

[9]  P. Singh,et al.  Single-Spark Analysis of Electro-Discharge Deposition Process , 2016 .

[10]  P. K. Patowari,et al.  Parametric optimisation of electric discharge coating process with powder metallurgy tools using Taguchi analysis , 2013 .

[11]  Apiwat Muttamara,et al.  Surface modification of tungsten carbide by electrical discharge coating (EDC) using a titanium powder suspension , 2012 .

[12]  Turnad Lenggo Ginta,et al.  Machined Surface Quality in Nano Aluminum Mixed Electrical Discharge Machining , 2017 .