共沉淀法合成铌镁酸铅──钛酸铅介电陶瓷粉末  

Sythesis of Lead Magnesium Niobate-Lead Titanate Dielectric Ceramic Powder by a Coprecipitation Process

作　　者：陈伟[1] 杜国维[1] 马肇曾[1] 肖治纲[1] 裘宝琴[1] 

机构地区：[1]北京科技大学材料物理系,北京科技大学材料化学系

出　　处：《北京科技大学学报》1995年第5期472-475,共4页Journal of University of Science and Technology Beijing

摘　　要：通过共沉淀法合成铌镁酸铅－钛酸铅介电陶瓷粉末，经８００℃焙烧后，Ｘ射线衍射研究表明几乎为单一钙钛矿相；经１０００℃烧结的陶瓷片其密度达到理论值的９６．７７％，２０℃介电常数可达２０９４０。A coprecipitation method was used for preparation of lead magnesium niobate-lead titanate dielectric ceramic powder.X-ray powder diffraction revealed that the powder calcinated at 800℃ had only perovskite phase.The density of ceramic discs sintered at 1 000℃ was up to 96.77% the theoretical value,and its dielectric constant was reached 20 940 at room temperature.

关 键 词：共沉淀 介电常数 铌镁酸铅 钛酸铅 陶瓷 

分 类 号：TQ174.756[化学工程—陶瓷工业]