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Micromachining Using Electrochemical Discharge Phenomenon, 2nd Edition by Jana D. Abou Ziki, Rolf Wuthrich

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Chapter 4

The Gas Film—A Key Element

Abstract

Spark-assisted chemical engraving is based on electrochemical discharges generated in a gas film around an electrode, as described in Chapter 2. This gas film is a key element of the process. On one hand, it is necessary for machining to occur. However, on the other hand, the gas film conditions the quality of machining. Therefore, a fundamental understanding of the processes related to the gas film is essential.

Keywords

Current; Electrode; Gas film; Gas-film lifetime; Machining; Poisson distribution

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