2006
DOI: 10.1016/j.ijmachtools.2005.07.029
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The gas film in spark assisted chemical engraving (SACE)—A key element for micro-machining applications

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Cited by 138 publications
(83 citation statements)
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References 19 publications
(47 reference statements)
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“…Indeed, as already mentioned, the main limiting factor is the stability of the gas film [7]. Newest results, which will be published elsewhere, show that it is possible by influencing the wettability of the tool-electrode (by adding surfactants to the electrolyte for example) to reduce this variance to below 5 µm [13].…”
Section: Resultsmentioning
confidence: 86%
“…Indeed, as already mentioned, the main limiting factor is the stability of the gas film [7]. Newest results, which will be published elsewhere, show that it is possible by influencing the wettability of the tool-electrode (by adding surfactants to the electrolyte for example) to reduce this variance to below 5 µm [13].…”
Section: Resultsmentioning
confidence: 86%
“…It may, therefore, be speculated that the critical voltage and the length of the limiting region are indicators of the gas film thickness (decreasing of these values meaning decreasing of gas film thickness). This aspect looks to be a promising method to characterize in a simple way the gas film thickness in SACE and is therefore worth investigating further [17,18].…”
Section: Discussionmentioning
confidence: 99%
“…The processing cell was mounted on an XY micro-positioning stage which is arranged underneath the tool electrode. The SACE machining was carried out using a setup similar to the one reported previously (Wüthrich and Hof 2006). A schematic of the sample with micro holes drilled at different places is shown in Fig.…”
Section: Methodsmentioning
confidence: 99%
“…The workpiece of electrically nonconductive material is immersed in electrolyte. When the voltage applied across the electrodes is higher than a critical value, so that the current density on the tool-electrode is typically above 1 A/mm 2 (for 30wt% NaOH electrolyte), bubbles form vigorously on the tool-electrode and coalesce into a continuous gas film across which electrical discharges take place (Wüthrich et al 2005;Wüthrich and Hof 2006). Bringing the tool-electrode close enough to the workpiece allows machining.…”
Section: Introductionmentioning
confidence: 99%
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