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

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2016/09/01

タイトル(英語): Evaporation Rate Affected by Current Density and Number of Vacuum Arc Cathode Spot

著者名: 山本　真司(東京都市大学 工学部 電気電子工学科),岩尾　徹(東京都市大学 工学部 電気電子工学科),江原　由泰(東京都市大学 工学部 電気電子工学科)

著者名(英語): Shinji Yamamoto (Department of Electrical and Electronic Engineering, Tokyo City University), Toru Iwao (Department of Electrical and Electronic Engineering, Tokyo City University), Yoshiyasu Ehara (Department of Electrical and Electronic Engineering, Tokyo City University)

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

要約(英語): 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.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.136 No.9 （2016） 特集：大電流高エネルギー技術の最新動向

本誌掲載ページ: 755-760 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/136/9/136_755/_article/-char/ja/