An experimental investigation into the micro-electrodischarge machining behavior of p-type silicon

Jahan, Muhammad P.; Lieh, T. W.; Wong, Yoke San; Rahman, Mustafizur

doi:10.1007/s00170-011-3302-x

Cited by 20 publications

(8 citation statements)

References 18 publications

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“…Micro EDM differs from traditional EDM as micro EDM has a comparatively lower discharge energy level, smaller electrodes, and lower axis resolution. Micro EDM is now capable of machining complex 3D micro-features in a wide range of materials, from non-conductive [ 96 ] to semi-conductive materials [ 97 ], with high aspect ratios, such as micro-holes, micro-electrodes or shafts, micro-molds, etc., irrespective of the hardness of the workpiece. In recent years, the EDM process has also found application at nano scale for various applications such as nano-pores for DNA detection devices and nano-holes for next generation fuel injection nozzles [ 98 ].…”

Section: Non-conventional Machining Of Bmgmentioning

confidence: 99%

Multi-Scale Traditional and Non-Traditional Machining of Bulk Metallic Glasses (BMGs)—Review of Challenges, Recent Advances, and Future Directions

Jahan,

Niraula,

Nafi

et al. 2024

Micromachines

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Bulk metallic glasses (BMGs) are growing in popularity prominently due to their potential in micro-electromechanical systems (MEMSs) and aerospace applications. BMGs have unique mechanical properties, i.e., high strength, hardness, modulus of elasticity, and wear resistance, due to their disordered atomic structure. Due to their unique mechanical properties and amorphous structures, machining of BMGs remains a challenge. This paper aims to carry out a detailed literature review on various aspects of the machining of bulk metallic glasses using both conventional and non-conventional processes, including experimental approaches, modeling, statistical findings, challenges, and guidelines for machining this difficult-to-machine material. Conventional machining processes were found to be challenging for machining bulk metallic glasses due to their high hardness, brittleness, and tendency to convert their amorphous structure into a crystalline structure, especially at the machined surface and sub-surface. Although their high electrical conductivity makes them suitable for machining by non-conventional processes, they impose new challenges such as heat-affected zones and crystallization. Therefore, the successful machining of BMGs requires more in-depth analysis of cutting forces, tool wear, burr formation, surface finish, recast layers or heat-affected zones, crystallization, and mechanical property changes among different varieties of BMGs. This review paper provides guidelines emerging from in-depth analysis of previous studies, as well as offering directions for future research in the machining of BMGs.

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Section: Non-conventional Machining Of Bmgmentioning

confidence: 99%

Multi-Scale Traditional and Non-Traditional Machining of Bulk Metallic Glasses (BMGs)—Review of Challenges, Recent Advances, and Future Directions

Jahan,

Niraula,

Nafi

et al. 2024

Micromachines

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“…Muhammad et al did a study on graphite nano size powder added in sinking and milling micro-EDM of WC-Co [14]. Operating tank and powder mixed with dielectric circulation were designed.…”

Section: Opened Pm-edm Systemmentioning

confidence: 99%

Assessment of Powder Mixed EDM: A Review

Nanimina

Rani

Ginta

2014

MATEC Web of Conferences

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Abstract. This project research undertakes the assessment of powder added electrical discharge machining (PMDM) with focus on effect of additive powders and circulation systems. In PMEDM process, powder can be mixed with dielectric fluid either in the main EDM tank or in a separate tank in order to improve EDM machining performance. Different designs of powder mixed EDM circulating systems such as closed and opened systems with different sizes of tank are described in literature. Various devices such as stirrer, circulating pump etc. are placed in the tank in order to ensure the uniformity of powder mixed dielectric. Each design has its advantages and disadvantages and it might affect the EDM output results. Therefore, there is a need to review the PMEDM with respect to additive powders and circulation systems in order to identify the gap and propose an alternative for improving process.

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“…These techniques are generally used for the manufacturing of, for example, micropillars and microgrooves. [30][31][32][33] Electric discharge machining (EDM) was utilized to manufacture tungsten micropillars with a minimum diameter of 7 μm and an aspect ratio of 14 as well as microgrooves with a width of 142 μm in a 500 μm-thick tungsten plate. [34,35] Tungsten carbide was machined using EDM to manufacture micropillars with a minimum diameter of 3 μm and microholes with diameters of 60 μm in a 300 μm-thick tungsten carbide strip.…”

Section: Introductionmentioning

confidence: 99%

High‐Resolution Patterning of Organic–Inorganic Photoresins for Tungsten and Tungsten Carbide Microstructures

et al. 2023

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Tungsten is an important material for high‐temperature applications due to its high chemical and thermal stability. Its carbide, that is, tungsten carbide, is used in tool manufacturing because of its outstanding hardness and as a catalyst scaffold due to its morphology and large surface area. However, microstructuring, especially high‐resolution 3D microstructuring of both materials, is a complex and challenging process which suffers from slow speeds and requires expensive specialized equipment. Traditional subtractive machining methods, for example, milling, are often not feasible because of the hardness and brittleness of the materials. Commonly, tungsten and tungsten carbide are manufactured by powder metallurgy. However, these methods are very limited in the complexity and resolution of the produced components. Herein, tungsten ion‐containing organic–inorganic photoresins, which are patterned by two‐photon lithography (TPL) at micrometer resolution, are introduced. The printed structures are converted to tungsten or tungsten carbide by thermal debinding and reduction of the precursor or carbothermal reduction reaction, respectively. Using TPL, complex 3D tungsten and tungsten carbide structures are prepared with a resolution down to 2 and 7 μm, respectively. This new pathway of structuring tungsten and its carbide facilitates a broad range of applications from micromachining to metamaterials and catalysis.

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An experimental investigation into the micro-electrodischarge machining behavior of p-type silicon

Cited by 20 publications

References 18 publications

Multi-Scale Traditional and Non-Traditional Machining of Bulk Metallic Glasses (BMGs)—Review of Challenges, Recent Advances, and Future Directions

Multi-Scale Traditional and Non-Traditional Machining of Bulk Metallic Glasses (BMGs)—Review of Challenges, Recent Advances, and Future Directions

Assessment of Powder Mixed EDM: A Review

High‐Resolution Patterning of Organic–Inorganic Photoresins for Tungsten and Tungsten Carbide Microstructures

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