In this article, the dissipation of predeposited surface charges on the SiC/epoxy coated insulator is investigated. Similar to Part I of this study, the analysis is carried out for the system of a pair of finger-shaped metallic electrodes placed on flat material samples and different types of material precharging are considered. Specifically, two cases based on different types of electrode–sample contacts (Cases 1 and 2, similar to Part I) are examined as well as surface charging by external corona (Case 3). It is shown that surface charge dissipation in Cases 1 and 2 takes place in two stages, whereas three stages in the charge decay process are identified in Case 3. It is shown that the rate of charge dissipation is strongly affected by the increase of the content of SiC filler in the coating material. The experimental results obtained for different cases are compared and discussed by employing results of the calculations of the electric field in the experimental setups and surface conductivities and surface trap characteristics obtained in Part I.

中文翻译：

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SiC/环氧树脂涂层对直流电压下表面充电现象的影响——第二部分：电荷耗散

在本文中，研究了 SiC/环氧树脂涂层绝缘体上预沉积表面电荷的耗散。与本研究的第一部分类似，对放置在扁平材料样品上的一对指状金属电极系统进行了分析，并考虑了不同类型的材料预充电。具体来说，研究了基于不同类型的电极-样品接触的两种情况（情况 1 和 2，类似于第一部分）以及外部电晕的表面充电（情况 3）。结果表明，情况 1 和 2 中的表面电荷耗散分两个阶段进行，而在情况 3 中确定了电荷衰减过程的三个阶段。结果表明，电荷耗散率受含量增加的强烈影响碳化硅填料在涂层材料中的含量。