PORCELAIN COMPOSITION OF HIGH PERMITTIVITY FOR TEMPERATURE COMPENSATION AND PRODUCTION THEREOF

摘要

PURPOSE:To make particle diameter of crystal of formed porcelain compound extremely small without damaging characteristics by adding SiO2 to temperature compensating porcelain composition of high permittivity of Sr-TiO3-CaTiO3-Nb2 O5 base. CONSTITUTION:100 pts.wt. composition comprising 66-71wt.% SrTiO3 and 29-34wt.% CaTiO3 is blended with 0.2-11.0wt.% Nb2O5 and 0.1-1.0wt.% SiO2 to give the title composition. SiO2 is added to the composition during pulverizing after calcination of the raw materials and then the blend is sintered.