基于COMSOL的陶瓷电容器中三相点电场模拟研究

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关键词：陶瓷电容器；三相点；电场；场增强因子

中图分类号： TM281

文献标识码：A

DOI：10.14106/j.cnki.1001-2028.2025.1373

引用格式：田恒， 路彭振， 吴业林， 等. 基于COMSOL的陶瓷电容器中三相点电场模拟研究 [J]. 电子元件与材料， 2025， 44（2）： 192-200.

Reference format： TIAN Heng， LU Pengzhen， WU Yelin， et al. Research on electric field simulation of triple junctions in ceramic capacitors based on COMSOL software [J]. Electronic Components and Materials， 2025， 44（2）： 192-200.

Research on electric field simulation of triple junctions in ceramic

capacitors based on COMSOL software

TIAN Heng， LU Pengzhen， WU Yelin， ZHAO Jiayang， TIAN Jingjing

（School of Physics and Electronic Information Engineering， Henan Polytechnic University， Jiaozuo 454003，

Henan Province， China）

Abstract： In ceramic capacitors， the triple junction region at the interaction of ceramic medium， metal electrode， and packaging material often produces concentrated electrical field due to the differences in dielectric constant of the materials， which significantly increases the risk of surface flashover and then lead to failure of the insulation of the capacitors. To address this problem， high-voltage semiconducting composite materials with adjustable conductivity were utilized to package the ceramic capacitors. Double-layer and sandwich structures models were constructed using COMSOL software， and the effect of encapsulation model and conductivity of composite material was investigated on the electric field on the triple junction region. Results show that the sandwich structure is superior to the double-layer structure. When the distance is 0.3 mm between the electrode and the high-voltage semiconducting composite material （width of 2 mm， thickness of 0.5 mm）， the ceramic exhibits an outstanding stability with largest reduced electric field. Compared with the high-resistance packaging materials， the high voltage semiconducting composite materials can reduce the maximum electric field at the triple junction by 68.61%， and can effectively disperse the accumulated charge in the triple junction region.

Keywords： ceramic capacitors; triple junctions; electric field; field enhancement factor

陶瓷电容器作为高压电路中重要的无源电子元器件，广泛应用于电子信息、机电换能、数字家电、高压电力设备、汽车电器、生物医学仪器、大功率储能系统、脉冲功率设备等领域 [1-5]。（剩余10610字）