Number of Vacuum Arc Cathode Spot Affected by Pressure

カテゴリ: 研究会(論文単位)

論文No: ED14070

グループ名: 【A】基礎・材料・共通部門 放電研究会

発行日: 2014/06/10

タイトル(英語): Number of Vacuum Arc Cathode Spot Affected by Pressure

著者名: Shinji Yamamoto(Tokyo City University),Keita Ogura(Tokyo City University),Toru Iwao(Tokyo City University),Motoshige Yumoto(Tokyo City University)

著者名(英語): Yamamoto Shinji(Tokyo City University),Ogura Keita(Tokyo City University),Iwao Toru(Tokyo City University),Yumoto Motoshige(Tokyo City University)

キーワード: Ｖａｃｕｕｍ　ａｒｃ|Ｃａｔｈｏｄｅ　ｓｐｏｔ|Ｏｘｉｄｅ　ｌａｙｅｒ|Ｍｅｔａｌ　ｖａｐｏｒ|Ｐｌａｓｍａ　ｉｍａｇｅ　ｐｒｏｃｅｓｓｉｎｇ|Vacuum arc|Cathode spot|Oxide layer|Metal vapor|Plasma image processing

要約(日本語): A remarkable characteristic of a vacuum arc cathode spot is that the cathode spot moves around on the metal surface. A cathode spot can remove an oxide layer. However, the influence of pressure 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. As described herein, the number of cathode spots on the surface of boundary layer were measured when the pressure changed. Experiments were performed using a SS400 cathode and a cylindrical copper anode. A high-speed video camera recorded the cathode spot movement. Then, the obtained images were analyzed using plasma image processing. The number of cathode spots decreases with increasing the pressure.

要約(英語): A remarkable characteristic of a vacuum arc cathode spot is that the cathode spot moves around on the metal surface. A cathode spot can remove an oxide layer. However, the influence of pressure 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. As described herein, the number of cathode spots on the surface of boundary layer were measured when the pressure changed. Experiments were performed using a SS400 cathode and a cylindrical copper anode. A high-speed video camera recorded the cathode spot movement. Then, the obtained images were analyzed using plasma image processing. The number of cathode spots decreases with increasing the pressure.

原稿種別: 日本語

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