西安交通大学电力设备电气绝缘国家重点实验室,西安,710049
网络首发:2011-08-10,
纸质出版:2011
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朱明远, 孟永鹏, 成永红, 等. 溅射金膜对氧化铝陶瓷纳秒脉冲真空沿面闪络的影响[J]. 西安交通大学学报, 2011,45(8):97-101.
Influence of Sputtered Gold Electrode on Pulsed Vacuum Surface Flashover Characteristics of Alumina Ceramic[J]. 2011, 45(8): 97-101.
研究了溅射金膜对氧化铝陶瓷在真空环境中、纳秒脉冲高电压作用下沿面闪络特性的影响规律.通过对氧化铝陶瓷表面粗糙度、电极接触形式的研究
并结合表面态陷阱、界面能带结构、电荷注入过程的分析
探究了影响氧化铝陶瓷溅射金膜后沿面闪络电压的主要原因.在50 ns/1.2 μs脉冲下、电极间距10 mm时
测量各试样的闪络电压60次
取后30次平均值作为稳定的闪络电压.研究结果发现
氧化铝陶瓷在溅射金膜电极试样的闪络电压比直接压接电极试样的闪络电压低
这是因为在不同电极接触方式下
氧化铝陶瓷材料的表面态对真空中的电子发射和材料表层的电荷注入的影响不同所致.
The effect of sputtered gold electrode on surface flashover characteristics of Al
2
O
3
(alumina)ceramic
under nanosecond pulsed high voltage in vacuum environment
is investigated. And the mechanism is clarified by the discussion for effects of surface roughness
surface traps
surface energy band structure and charge injection. Six kinds of 95% Al
2
O
3
ceramics with different surface roughness and electrode contacting types are prepared. The flashover voltage is measured under 50 ns(rise time)/1.2 μs(half-height width time)unipolar pulse and 5×10
-3
Pa vacuum degree. It is found that the flashover voltage for the samples with sputtered gold contact electrode gets lower than ones without gold contact electrode
because the surface state induced by sputtered gold-electrode can affect the electron emission and charge injection on the
sample surface.
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基于表面闪络放电的伪火花开关触发特性的研究. 西安交通大学学报,2007,41(8):978-981.
直流下油中局部放电脉冲波形测量与特性分析. 西安交通大学学报, 2008,42(4):481-486.
真空中绝缘子闪络前表面电荷分布的二维仿真. 西安交通大学学报, 2008,42(4):476-480.
水中大体积放电产生方法的研究. 西安交通大学学报, 2008,42(6):723-727.
局部放电脉冲群的实用快速分类技术及应用. 西安交通大学学报, 2008,42(8):1021-1025.
一种可用于绝缘子沿面放电状态识别的算法. 西安交通大学学报, 2008,42(10):1269-1274.
油/纸绝缘沿面局部放电特性研究. 西安交通大学学报, 2009,43(6):108-112.
雷电冲击电压下油纸绝缘气隙模型的局部放电测量与分析. 西安交通大学学报, 2009,43(12):75-80.
正脉冲电压下水中流注放电特性的研究. 西安交通大学学报, 2009,43(2):96-100.
水分对变压器绝缘纸性能影响的分子动力学模拟. 西安交通大学学报, 2009,43(4):111-115.
带电水蒸气冲洗污秽绝缘子时的交流闪络特性研究. 西安交通大学学报, 2009,43(12):96-100.
变压器油流动带电度的微静电测量方法及其影响因素. 西安交通大学学报, 2010,44(8):96-100.
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