Influence of various flow methods during fabrication of micro ellipse pattern by maskless electrochemical micromachining

Kunar, S.; Bhattacharyya, B.

doi:10.1016/j.jmapro.2018.09.005

Cited by 16 publications

(7 citation statements)

References 19 publications

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“…However, the material should be a good conductor to electricity. [191][192][193] Looking on to these advantages more research efforts on MECT are required to be performed in future.…”

Section: Other Miscellaneous Techniquesmentioning

confidence: 99%

Recent advances in the mechanical durability of superamphiphobic surfaces: A review

Singh

Kango

Sharma

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Superamphiphobic (water and oil repellent) surfaces have distinct application areas such as anti-corrosion, anti-friction, anti-icing, self-cleaning, etc. To fabricate these types of surfaces, the base material must have low surface energy and dual-scale roughness (micro and nano levels). The durability of such surfaces is indicated by the duration up to which they remain stable and effective. When mechanical forces interact with these surfaces, it deteriorates the surface integrity and ultimately degrades its superamphiphobic property. Hence, these surfaces have very limited mechanical wear sturdiness and long-term durability. Therefore, in this article, efforts have been made to review the different types of mechanical durability tests performed on superamphiphobic metallic and non-metallic surfaces. Moreover, various kinds of surface texturing techniques in context with durability of such surfaces have been discussed. Finally, from the reported literature, critical conclusions, challenges, and scopes for future work have also been presented.

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“…However, the material should be a good conductor to electricity. [191][192][193] Looking on to these advantages more research efforts on MECT are required to be performed in future.…”

Section: Other Miscellaneous Techniquesmentioning

confidence: 99%

Recent advances in the mechanical durability of superamphiphobic surfaces: A review

Singh

Kango

Sharma

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Reusable mask approach Kunar et al [70][71][72] developed a technique for micro-texturing in which SU-8 is coated on the tool surface instead of workpiece surface, hence the same tool can be used for multiple experiments. Elliptical micro-dimples are made using different flow methods of electrolyte in the ECMM cell.…”

Section: Wire Ecm Based Through-mask Electrochemical Micro-texturingmentioning

confidence: 99%

“…It was concluded that the best results were achieved by the vertical upward mode of flow. 71 Chen et al 73 presented a study of fabricating PDMS flexible mask which can be attached to any cylindrical surface, using a negative half-replica of the cylinder as an electrode. TM-ECMTex was performed on SS-304 cylinder.…”

Section: Wire Ecm Based Through-mask Electrochemical Micro-texturingmentioning

confidence: 99%

Micro-machining: An overview (Part II)

Jain

Patel

Ramkumar

et al. 2021

Journal of Micromanufacturing

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This article on ‘Micro-machining: An Overview (Part II)’ is in continuation to ‘Micro-machining: An Overview (Part I)’ published in this journal ( Journal of Micromanufacturing). It consists of four parts, namely, electrochemical micro-texturing, electrochemical spark micro-machining, molecular dynamics simulation and sustainability issues of micro-machining processes. Electrochemical micro-texturing (ECMTex) deals with various techniques developed for micro-texturing on different types of workpiece-surfaces, namely, flat, curved and free-form surfaces. Here, basically two categories of techniques have been reviewed, namely, with mask and without mask. It also deals with ‘single point tool micro-texturing’ which turns out to be a single-step technique requiring minimum time, but the accuracy and repeatability obtained after micro-texturing need to be critically analysed. For mass production, one needs to go for sinking kind of ECMTex processes. Electrochemical spark micro-machining (ECSMM) is an interesting hybrid (ECM+EDM) process which can be applied for electrically conducting as well as electrically non-conducting materials. However, the work reported in this article deals only with the electrically non-conducting materials for which this process was initially developed. This process has a lot of potential for theoretical work to be done. In this article, two theories of sparking/discharging have been briefly mentioned: single bubble discharging/sparking and single surface discharging. It also dicusses its applications for different types of electrically non-conducting materials. Molecular dynamics simulation (MDS) of micro-/nano-machining processes is very important, but it is very cumbersome to understand at atomic/molecular scale. In these processes, the material behaviour at micro-/nano-level machining is completely different as compared to bulk-machining (macro-machining) processes. Hence, some fundamentals of MDS have been discussed. It just gives the idea of available techniques, softwares and models for different types of processes. However, there is the need of further research work to be done for clearly understanding the MDS of micro-/nano-machining. In the end, the sustainability of micro-machining issues have been discussed, mainly based on the energy consumption per unit mass of production. It is concluded that the advanced micro-manufacturing processes are highly energy-intensive processes, and they need further studies to be done for making them more suitable from sustainability point of view. At the end of each section, some potential areas of research for enhancing the accuracy and repeatability, and minimising the production time of each process have been discussed.

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“…Furthermore, the e ciency of the electrolyte characteristics on the current density is mainly affected by the conductivity, passivation, and activation of the solution. Different electrolyte ow patterns will affect the product mass transfer and conductivity stability, as reported by Kunar et al [13]. Zhao et al 14] The above factors mainly affect the current density, whereas the mass transfer in the ow eld and the mask geometric characteristics also affect both the current density and its distribution characteristics.…”

Section: Introductionmentioning

confidence: 96%

Effect of the geometric structures of mask feature on the microstructure forming in through-mask electrochemical micromachining

Wang

Jiang²,

Shou-dong³

et al. 2022

Preprint

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The manufacturing of surface microstructure is an important means for the modification of surface characteristics of parts. Through-mask electrochemical manufacturing is also an efficient way to fabricate surface microstructures. Nevertheless, in cases where the through-mask electrochemical manufacturing is used for the fabrication of microstructures, many experiments are required to control the cross-section morphology of the microstructures. Furthermore, there is a lack of quantitative analysis of the impact of key variables on the process. In this paper, using numerical simulations based on the geometric structure of mask feature, we analyze the effects of the aspect ratio of mask feature and the gap between cathode to mask on electrochemical micromachining. We further investigate the influence laws of the mask feature’s geometric structure on the anode current density distribution and forming process. A critical value of "0.8" is also determined for aspect ratio of mask feature which is closely related to the anode current density distribution and forming process. The through-mask electrochemical micromachining experiments confirm the effect laws of the geometric structure of the mask feature. And the critical value (0.8) of aspect ratio can be used as the basis for selecting mask feature.

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Influence of various flow methods during fabrication of micro ellipse pattern by maskless electrochemical micromachining

Cited by 16 publications

References 19 publications

Recent advances in the mechanical durability of superamphiphobic surfaces: A review

Recent advances in the mechanical durability of superamphiphobic surfaces: A review

Micro-machining: An overview (Part II)

Effect of the geometric structures of mask feature on the microstructure forming in through-mask electrochemical micromachining

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