氧化铬涂层对真空陶瓷表面闪络特性的影响

2006 International Symposium on Discharges and Electrical Insulation in Vacuum Pub Date : 2006-09-01 DOI:10.1109/DEIV.2006.357251

T. Shioiri, N. Asari, S. Saito, H. Nakamuta, M. Homma, K. Suzuki

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引用次数: 8

摘要

通过实验确定了氧化铬涂层在陶瓷表面的调理效果。众所周知，氧化铬的二次电子发射系数很小。氧化铬涂层后，调理效果提前完成，闪蒸过电压升高。在高施加电压下，在裸露的陶瓷表面上观察到发光，而在涂有氧化铬的样品上没有观察到发光。镀覆氧化铬导致闪络电压升高的原因之一是抑制了二次电子雪崩。另一种被认为是由于表面电阻降低而导致的表面电荷降低

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Effect of chromium oxide coating on surface flashover characteristics of ceramic in vacuum

Experiments were conducted to determine the conditioning effects of a chromium oxide coating on a ceramic surface. Chromium oxide is known to have a small secondary electron emission coefficient. With a chromium oxide coating, conditioning effects were completed early and flash over voltage increased. While luminescence was observed on a bare ceramic surface under a high applied voltage, none was observed on the sample coated with chromium oxide. One cause of increasing flashover voltage due to coated chromium oxide is depression of the secondary electron avalanche. Another is considered to be depressed surface charge due to decreasing surface resistance

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2006 International Symposium on Discharges and Electrical Insulation in Vacuum

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