Surface Modification Process by Electrical Discharge Machining with Tungsten Carbide Powder Mixing in Kerosene Fluid

Le, Van Tao; Banh, Tien Long; Tran, Xuan Thai; Minh, Nguyễn Thị Hồng

doi:10.4028/www.scientific.net/amm.889.115

Cited by 13 publications

(5 citation statements)

References 14 publications

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“…A similar study was carried out by Chundru [22] on Ti6AL4V with TiC/Cu powdered electrode. Lee et al [23] used tungsten carbide powder in kerosene to carry out surface modification along with Ton and Ip machine steel. The study resulted in 57.98% and 129.17% improvements in the surface finish and microhardness of powder mixed electric discharge machining (PMEDM), respectively, as compared to EDM.…”

mentioning

confidence: 99%

On the Investigation of Surface Integrity of Ti6Al4V ELI Using Si-Mixed Electric Discharge Machining

et al. 2020

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Surface modification is given vital importance in the biomedical industry to cope with surface tissue growth problems. Conventionally, basic surface treatment methods are used which include physical and chemical deposition. The major drawbacks associated with these methods are excessive cost and poor adhesion of coating with implant material. To generate a bioactive surface on an implant, electric discharge machining (EDM) is a promising and emerging technology which simultaneously serves as machining and surface modification technique. Besides the surface topology, implant material plays a very important role in surgical applications. From various implant materials, titanium (Ti6Al4V ELI) alloy is the best choice for long-term hard body tissue replacement due to its superior engineering, excellent biocompatibility and antibacterial properties. In this research, EDM’s surface characteristics are explored using Si powder mixed in dielectric on Ti6Al4V ELI. The effect of powder concentration (5 g/L, 10 g/L and 20 g/L) along with pulse current and pulse on time is investigated on micro and nanoscale surface topography. Optimized process parameters having a 5 g/L powder concentration result in 2.76 μm surface roughness and 13.80 μm recast layer thickness. Furthermore, a nano-structured (50–200 nm) biocompatible surface is fabricated on the surface for better cell attachment and growth. A highly favourable carbon enriched surface is confirmed through EDS which increases adhesion and proliferation of human osteoblasts.

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confidence: 99%

On the Investigation of Surface Integrity of Ti6Al4V ELI Using Si-Mixed Electric Discharge Machining

et al. 2020

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“…The improvement in surface roughness was about 57.98% along with 129.17% improvement in micro hardness. 168…”

Section: Surface Characteristicsmentioning

confidence: 99%

An insight on Powder Mixed Electric Discharge Machining: A state of the art review

Srivastava¹,

Vishnoi²,

Gangadhar³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Electrical discharge machining (EDM) is an exigent focus of interest for researchers since its inception. EDM has a wide range of applications due to its non-contact machining process based on the spark erosion method. EDM is a non-conventional machining process with high potential in the recent industrial era. Due to the few limitations of EDM, many hybrid techniques are evolved in recent years. The present review paper elucidates the in-depth mechanism of the material removal process in EDM. Hybrid EDM processes are also reviewed with special attention on powder mixed electrical discharge machining (PMEDM). A detailed comparison between the EDM and PMEDM is presented with a meticulous portrayal of the advancement and evolution of PMEDM. The emphasis is given on significant performance parameters, namely tool wear rate, material removal rate and surface roughness, besides other parameters. In addition, the study also includes different modelling, optimization, and surface analysis techniques on EDM. The paper concludes with the future scope of PMEDM in the fields of manufacturing along with its applications.

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“…6 Though both processes have an impact in the field of EDM deposition but studies have shown that the PM tool offers precise control over the distribution of particles, ensuring uniformity in deposition. 7 Previous research has reported the effective deposition of materials such as silicon carbide, 8 titanium di-boride, 9 tungsten carbide, 10 MWCNT, 6 copper-nickel, 11 tungsten, 12 tungsten disulphide, 13,14 hexagonal boron nitride, 4 molybdenum disulphide, 15 etc. Therefore, it indicates that EDM is a suitable tool for material deposition operation.…”

Section: Introductionmentioning

confidence: 99%

Parametric study on surface modification of Al-7075 alloy using electric discharge coating

Barua,

Rahang

2024

Surface Engineering

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This work investigates the surface modification of Al-7075 alloy using a copper-multi-walled carbon nanotube powder metallurgical green compact tool in the electric discharge coating process. The effect of input parameters such as compact load, peak current ( Ip), and pulse on-time ( Ton) on material deposition rate and surface roughness ( Ra) has been investigated. The process parameters are optimised using the teaching learning-based optimisation algorithm. Maximum material deposition rate of 0.62 mg/min with minimum Ra of 3.00 µm has been achieved at compact load of 6 tons, Ip of 2.5 A, and Ton of 1000 µs. The field emission scanning electron microscopy images show smooth surface generation at low Ip and compact load settings. Characterisation using different techniques confirms the presence of tool materials on the modified surface. The microhardness test of the modified surface exhibits a higher hardness value of 2.70 times than that of the substrate material.

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Surface Modification Process by Electrical Discharge Machining with Tungsten Carbide Powder Mixing in Kerosene Fluid

Cited by 13 publications

References 14 publications

On the Investigation of Surface Integrity of Ti6Al4V ELI Using Si-Mixed Electric Discharge Machining

On the Investigation of Surface Integrity of Ti6Al4V ELI Using Si-Mixed Electric Discharge Machining

An insight on Powder Mixed Electric Discharge Machining: A state of the art review

Parametric study on surface modification of Al-7075 alloy using electric discharge coating

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