Nonmetallic arc electrode composed of water and ceramic

作者：Deguchi Mikio^*

来源：Japanese Journal of Applied Physics, 2008, 47(9): 7328-7333.

DOI：10.1143/JJAP.47.7328

• arc discharge
• discharge electrode
• water-ceramic electrode
• plasma processing
• reactive plasma

A novel nonmetallic arc electrode named the water-ceramic electrode, which is a combination of water and a ceramic component, is demonstrated. In the water-ceramic electrode, water and the ceramic component are exposed to the discharge space. The metal electrode is completely covered with water and is not exposed to the arc plasma. Under discharge. the ceramic component locally becomes incandescent, where the arc column terminates. The functions of the water and ceramic component are considered to be analogous to those of molten wax and the wick of a candle, respectively. The most remarkable feature of the water-ceramic electrode is that the ceramic component, which is a natural insulator and a representative heatproof material, becomes easily incandescent and locally melts with only an electric discharge.

• 出版日期2008-9