電気加工学会誌
Online ISSN : 1881-0888
Print ISSN : 0387-754X
ISSN-L : 0387-754X
研究
絶縁性Si3N4セラミックスの放電加工における導電性被膜の形成メカニズムに関する一考察
後藤 啓光谷 貴幸毛利 尚武
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ジャーナル フリー

2016 年 50 巻 124 号 p. 112-118

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 It has been established that the formation of an electrically conductive layer on an insulator is a precondition for electrical discharge machining of insulating ceramics by an assisting electrode method. However, the details of the formation mechanism of the electrically conductive layer are not well understood. In this paper, the morphology and components of the machined surface layer are analyzed under different machining conditions of electrode moving speed and voltage threshold for discharge detection. We describe an idea for the formation mechanism of the electrically conductive layer in the machining of insulating Si3N4 machining by using a machine tool made especially for our experiments.

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