電気学会論文誌D(産業応用部門誌)
Online ISSN : 1348-8163
Print ISSN : 0913-6339
ISSN-L : 0913-6339
研究開発レター
シリコーンゲル中に生じるバブルの挙動
井堀 春生佐々木 慎平前田 竜二全 現九藤井 雅治
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2018 年 138 巻 9 号 p. 758-759

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We have studied the electrical treeing generated in silicone gel used as an encapsulant for power electronics modules. The treeing which consist of bubbles and strings was named Pearl-chain-type treeing. Under AC voltage application, the bubble vibrated with repeating expansion and shrinkage. We have obtained new insight that the expansion of the bubble at polarity inversion was very important for the development of the tree.

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