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「ひらめき、こと、もの、くらし、ひと」をICT、AI、ビックデータ、ブロックチェーンでつなぎながら、大規模電源と再生可能エネルギーを共存させる電力流通(送配電・変電)を実現するため、画期的なエネルギーデジタルトランスフォーメーション(EDX)技術を用いて、大都市の暮らしを支えるソリューションを提供していきます。

An epoch-making energy digital transformation technology with the power distribution with the coexist large-scale power sources and renewable energy under consideration of inspiration, koto, things, living and people zukuri with ICT, AI, big data and block chain has been researched. We provide the solutions that support the lives of big cities.

大電流エネルギーDX研究室

山本先輩(博士課程1年)の論文「真空アーク陰極点の個数と電流密度が及ぼす酸化膜の蒸発速度」が、電気学会 電力・エネルギー部門誌(2016年9月号)に掲載決定!

学会

山本先輩(博士課程1年)の論文「真空アーク陰極点の個数と電流密度が及ぼす酸化膜の蒸発速度」が、電気学会 電力・エネルギー部門誌(2016年9月号)に掲載決定!

HiCELは、研究成果を積極的に世界へ発信!プラズマを社会への応用する技術開発をしています!

山本真司, 岩尾徹,江原由泰,真空アーク陰極点の個数と電流密度が及ぼす酸化膜の蒸発速度, Vol. 136, No. 9 (2016)

Evaporation Rate Affected by Current Density and Number of Vacuum Arc Cathode Spot
Shinji Yamamoto∗, Student Member, Toru Iwao∗, Member, Yoshiyasu Ehara∗, Member

A remarkable characteristic of a vacuum arc cathode spot, which can remove an oxide layer, is that it moves across the metal surface. However, the influence of current change to the parameter of the cathode spot on the boundary layer remains unclear. This study elucidated the split process and frequency in order to know the removal process of vacuum arc cathode spot with vapor from oxide layer. Experiments were conducted using an SS400 cathode and a cylindrical copper anode. A high-speed video camera recorded the cathode spot movement with ND (Neutral Density) filter. The obtained images were then analyzed using plasma image processing. As described herein, the number of cathode spots, split frequency, evaporation rate on the surface of boundary layer were measured with changing the current. As a result, the parameter of the cathode spot was normalized by the current density and number. In addition, the cathode spot have appropriate number and area for current continuity. In the case of mean number, the current density becomes the maximum. Moreover, the evaporation rate of oxide layer depends on the current density multiplied by number of cathode spot. However, the evaporation rate does not increase because the current per a cathode spot is very small when the number of cathode spots exceeds the mean number.

キーワード:表面処理,金属蒸気,画像処理,蒸発速度,分裂
Keywords: surface treatment, metal vapor, image processing, evaporation rate, split

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