Single-Spark Analysis of Electro-Discharge Deposition Process

Muralidharan, B.; Chelladurai, H.; Singh, Praveen Kumar; Roy, M.

doi:10.1080/10426914.2015.1127936

Cited by 16 publications

(12 citation statements)

References 31 publications

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“…The XRD results shown in Figure 7c indicate that the Fe3Al phase was formed in the Fe-Al MNS. Because of the high temperature and pressure during the electrical discharge process of the Fe-Al electrode [27,28], the gap between the Fe-Al electrode and working piece acted like a sintering furnace, which promoted the formation of the Fe3Al phase in the coating. In addition, the intensity of characteristic peaks for the AlFe3C0.5 phase, showing in Figure 7c, decrease with the increasing gap voltage, indicating that the content of AlFe3C0.5 phase in Fe-Al MNS decreases.…”

Section: Surface Morphology and Chemical Compositionmentioning

confidence: 99%

Fabrication of Fe‒Al Coatings with Micro/Nanostructures for Antifouling Applications

Wang

Fan

et al. 2020

Coatings

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Fouling is one of the common problems in heat-transfer applications, resulting in higher fouling resistance, and lower heat-transfer coefficient. This paper introduces the design and fabrication of an Fe–Al coating with micro/nanostructures on low-carbon steel by electrical discharge coating (EDC) technology to improve the antifouling property. The Fe–Al coating with micro/nanostructures is characterized by a large number of micro/nanostructures and superior anti-fouling property, which is attributed to its hydrophobic surface. The antifouling property, fouling induction period and contact angle of the Fe–Al coating with micro/nanostructures increase with the increasing gap voltage. Compared with the polished surface of low-carbon steel, the Fe–Al coating with micro/nanostructures extends the induction period from 214 to 1350 min, with a heat flux of 98 kW·m−2. After 50 adhesion tests, the contact angle of the Fe–Al coating with micro/nanostructures decreases from 6.81% to 27.52%, which indicates that the Fe–Al coating with micro/nanostructures is durable and suitable for industrial applications.

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Section: Surface Morphology and Chemical Compositionmentioning

confidence: 99%

Fabrication of Fe‒Al Coatings with Micro/Nanostructures for Antifouling Applications

Wang

Fan

et al. 2020

Coatings

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“…50% of copper and 50% Ni powder metallurgical electrode is used for the current investigation. Due to applied heat flux, spark strikes with the spark zone temperature rise to 10,000 K and the plasma pressure of 10 bar 28 Figure 6 shows the species transport from the melt pool of the tool, material migration in the form of species transport and coat formation over the substrate. The surface area of the tool where the temperature rises above 1523K forms a melt pool.…”

Section: Introductionmentioning

confidence: 99%

A thermophysical modelling of electric discharge coating process

Kumaran

Muralidharan

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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This research paper presents a thermophysical model development and simulation of the electric discharge coating process (EDC). Many literatures are available for the electric discharge coating process from an experimental perspective. A 2-D axisymmetric model was initially developed with the realistic assumption with multi-spark overlap conditions considered in this work. The melt pool volume of the tool material is estimated from the 2D model. The 3D coating model was developed using COMSOL Multiphysics 5.4. This model predicts the temperature distribution on the green compact tool electrode and coating thickness on the substrate. To validate the simulation model, the experimental result from the literature is compared with the simulation result. The simulation and validation trials results reveal that the present developed coating model can predict the coating thickness with minimum error (4% -14%). The developed multi-spark model for the EDC process can be referenced to understand the coating mechanism for various tools and workpiece materials.

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“…EDC is the material transfer process of EDM, is applied for depositing the wear and corrosion-resistant coating on the workpiece [3]. Nowadays, several EDC experiments conducted to modify the surface of the base materials.…”

Section: Introductionmentioning

confidence: 99%

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

Elaiyarasan

Satheeshkumar²,

Senthilkumar³

2020

Journal of Manufacturing Engineering

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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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Single-Spark Analysis of Electro-Discharge Deposition Process

Cited by 16 publications

References 31 publications

Fabrication of Fe‒Al Coatings with Micro/Nanostructures for Antifouling Applications

Fabrication of Fe‒Al Coatings with Micro/Nanostructures for Antifouling Applications

A thermophysical modelling of electric discharge coating process

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

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