| 摘要 |
PURPOSE:To obtain the title ceramic having high density and high transparency by forming a coprecipitated body contg. a part of metallic constituent (Pb, Ba) (Zr, Ti)O3 except Zr, but contg. also Zr independently, then adding residual constituents to the coprecipitated body, molding the mixture, and sintering the molded product. CONSTITUTION:A soln. (e.g. mixture of aq. soln. of TiCl4 and zirconyl nitrate) contg. an appropriate amt. of at least one metallic constituent (e.g. Ti) constituting (Pb, Ba) (Zr, Ti)O3 expressed by the formula (abbreviated to PBaZT hereunder) except Zr, and contg. also Zr independently, is prepd., and a coprecipitated body is formed by allowing the soln. to react with a precipitate forming soln. (e.g. aq. ammonia). The coprecipitated body is dried and then calcined at 700-1,300 deg.C to prepare a powdery product having submicron particle size contg. scarcely agglomerates. Then, the powdery product is mixed with a compd. consisting of residual components for an aimed PBaZT compsn., and calcined at 500-1,300 deg.C and the calcined product is molded. The molded body is sintered at 1,000-1,300 deg.C to obtain thus the aimed PBaZT. |
