Alumina-based Ceramic Material for High-voltage Ceramic Substrate

摘要

The paper presents the study of the particle size distribution, surface area and their effect on sintering of alumina (Al_2O_3) using additives such as magnesium oxide (MgO) and silica (SiO_2), so that the samples could be sintered to high relative density (～ 97.43%) with controlled grain growth. However, the use of MgO along with SiO_2 on Al_2O_3 produced the powder compacts having high Green density, sintered density with minimum porosity to achieve high dielectric strength ceramic material, so that material can be used for high-voltage insulator applications.