| 摘要 |
PROBLEM TO BE SOLVED: To obtain a semiconductor porcelain composition small in specific resistance and high in voltage resistance by adding a fine amount of ZrO2 to a barium titanate porcelain composition containing Ba, Sr, Ca, Pb, rare earth elements, Ti, Mn, and Si. SOLUTION: This semiconductor porcelain composition comprises (Ba1- P- Q- R- SSrPCaQPbRMS)TiXO3 (M is an element selected from rare earth elements), MnO2 and SiO2 , and further 100-2,000ppm of ZrO2 . The semiconductor porcelain composition is obtained by grinding the raw materials of the porcelain composition into particles having an average particle diameter of <=1μm with ZrO2 balls, molding the particles and subsequently sintering the molded product. |
