Process characteristics of electrochemical discharge machining and hybrid methods: a review

Zhang, Shengsheng; Zhou, Jianping; Hu, Guoyu; Wang, Lizhong; Xu, Yan

doi:10.1007/s00170-023-12452-4

Cited by 6 publications

(2 citation statements)

References 170 publications

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“…This liquid film introduces an additional thermal resistance layer and reduces the condenser's efficiency [18] by creating an unwanted thermal barrier on the metal surface. In contrast, DwC has proven to be highly efficient for heat transfer especially when accompanied with high condensate removal, yielding heat transfer coefficients significantly higher than those measured during FwC [25,27,28].…”

Section: Introductionmentioning

confidence: 94%

“…It's suitable for both mass production and precision machining, making it valuable in modern manufacturing where high-volume output and precision are needed. EDM can work with a wide range of conductive materials, including various hardness levels, and can achieve micrometer-level tolerances by adjusting parameters like wire-to-workpiece distance, voltage, and conductivity [25].…”

Section: Introductionmentioning

confidence: 99%

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Inducing hydrophobicity in Stainless Steel 304 by mechanical texturing and chemical functionalization

Nanou,

Zarkadoulas,

Pandis

et al. 2024

Preprint

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This study investigates the impact of combined texturing by micromachining and chemical functionalization on the wetting behavior and water condensation of a metallic surface. The transition from the Wenzel to Cassie-Baxter or impregnated Cassie-Baxter regimes was unveiled. Initially, grooved stainless steel 304 specimens displayed hydrophobic wetting in the Wenzel mode. The chemical functionalization with silane triggered a remarkable shift that was not observed in non-textured by micromachining samples. Thus contact angles surged, facilitating a transition to the Cassie-Baxter state for directional canal specimens and the impregnated Cassie-Baxter state for those with pyramidal patterns. Roll-off angle experiments showcased distinct behavior among specimens featuring canals or pyramidal structures. Specimens with canals exhibited notably lower roll-off angles compared to both flat surfaces and those with pyramidal patterns. Notably, the orientation of canals influenced these angles, with vertically aligned canals demonstrating reduced roll-off angles. In humid environments, micro-machined surfaces exhibited superior water condensation capabilities compared to untreated flat SS304 surfaces. Remarkably, chemically functionalized grooved specimens presented larger condensate droplet diameters than flat surfaces. Consequently a remarkable enhancement in water condensation and a 7 fold higher latent heat transfer coefficient is reported.

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Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Inducing hydrophobicity in Stainless Steel 304 by mechanical texturing and chemical functionalization

Nanou,

Zarkadoulas,

Pandis

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Optimization of ECDM Performances for Micro-machining of Semi-conducting Silicon-Wafer

Naik,

Sathisha,

Mallick

et al. 2024

Nanotechnology in the Life Sciences

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Inducing hydrophobicity in stainless steel 304 by mechanical texturing and chemical functionalization

Nanou,

Zarkadoulas,

Pandis

et al. 2024

Int J Adv Manuf Technol

View full text Add to dashboard Cite

This study investigates the impact of combined texturing by micromachining and chemical functionalization on the wetting behavior and water condensation on stainless steel 304. The transition from Wenzel to Cassie-Baxter or impregnated Cassie-Baxter regimes is investigated. Understanding this transition is critical for advancing surface engineering, as it enables precise control over wetting behavior for various applications. Herein, we report on the wire EDM (wEDM) machining on stainless steel 304 to produce two distinct microstructure patterns with directional canals or pyramidal structure, and their performance in water condensation. These patterns significantly impact water condensation performance. wEDM is employed to create surface roughness, followed by phosphoric acid treatment and chemical functionalization with trichloro-1H,1H,2H,2H-perfluorooctyl silane. Contact angle measurements reveal a synergistic effect between groove direction and silane coating, leading to hydrophobic surfaces and dropwise water condensation. Specimens with directional canals exhibit a contact angle of 150°, while specimens with pyramidal structures exhibit 151o. Roll-off angle experiments showcased distinct behavior among specimens featuring canals or pyramidal structures. Specimens with canals exhibit notably lower roll-off angles compared to both flat surfaces and those with pyramidal patterns, leading to a dependence of roll-off angles on the orientation of canals. In humid environments, micromachined specimens exhibit superior water condensation capability compared to untreated SS304 surfaces. Chemically functionalized grooved specimens present larger condensate droplet diameters than flat surfaces. An enhancement in water condensation and a sevenfold higher latent heat transfer coefficient is reported. Specimens with chemical functionalization achieve corrosion protection with an efficiency reaching 82.9%.

show abstract

Process characteristics of electrochemical discharge machining and hybrid methods: a review

Cited by 6 publications

References 170 publications

Inducing hydrophobicity in Stainless Steel 304 by mechanical texturing and chemical functionalization

Inducing hydrophobicity in Stainless Steel 304 by mechanical texturing and chemical functionalization

Optimization of ECDM Performances for Micro-machining of Semi-conducting Silicon-Wafer

Inducing hydrophobicity in stainless steel 304 by mechanical texturing and chemical functionalization

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