电子元件与材料2023，Vol.42Issue(11)：1315-1319,5.DOI:10.14106/j.cnki.1001-2028.2023.0263
铬锰掺杂对氧化铝陶瓷沿面闪络特性的影响
Effects of chromium and manganese doping on the surface flashover characteristics of alumina ceramics
摘要
Abstract
Aimng at the problem of surface flashover phenomenon that occurs frequently in the insulation materials in high-voltage insulation systems,a scheme was designed to increase the flashover voltage of the alumina ceramics through bulk doping.Using 95% Al2O3 ceramics as the base material,Cr2O3-MnCO3 doped alumina ceramics with different contents were prepared and sintered at temperatures ranging from 1510℃ to 1590℃.The effects of Cr2O3-MnCO3 doping on the sintering and vacuum insulation properties of the insulating ceramics were studied.The results show that the addition of Cr2O3-MnCO3 promotes the sintering of the alumina ceramics.The as formed MnAl2O4 can reduce the overall resistivity of the ceramics,and the addition of Cr+reduces the overall secondary electrons emission coefficient of the ceramics.On the premise of maintaining 95% insulation performance of the alumina ceramics,the addition of Cr2O3-MnCO3 can effectively improve the surface flashover voltage of the ceramics,with a conditioned-flashover voltage as high as 109 kV.关键词
沿面闪络/氧化铝陶瓷/铬锰掺杂/烧结Key words
surface flashover/alumina ceramics/chromium-manganese doping/sintering分类
化学化工引用本文复制引用
温奕超,唐斌,张树人..铬锰掺杂对氧化铝陶瓷沿面闪络特性的影响[J].电子元件与材料,2023,42(11):1315-1319,5.基金项目
国家自然科学基金(62171080) （62171080）
