机构地区: 北京科技大学材料科学与工程学院材料物理与化学系
出 处: 《北京科技大学学报》 1995年第5期472-475,共4页
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.