公开(公告)号：US5337209A

公开(公告)日：1994-08-09

申请号：US943357

申请日：1992-09-10

申请人： Audrey E. Sutherland ,  Keith Bridger ,  Eric M. Fiore ,  Julie A. Christodoulou ,  Alex E. Bailey ,  Allan S. Gelb

发明人： Audrey E. Sutherland ,  Keith Bridger ,  Eric M. Fiore ,  Julie A. Christodoulou ,  Alex E. Bailey ,  Allan S. Gelb

IPC分类号： A61N1/378 ,  A61N1/39 ,  C04B35/499 ,  C04B35/645 ,  H01G4/12 ,  C04B35/46

CPC分类号： H01G4/1227 ,  C04B35/499 ,  C04B35/6455 ,  A61N1/378 ,  A61N1/3956

摘要： A dielectric ceramic composition is disclosed comprising lead magnesium niobate and strontium titanate, barium titanate or a combination thereof. Dopants such as Ta, La, Y, Eu, Nd, Sm, Gd, W, Si, Zr and Sb may also be included in the composition. The lead magnesium niobate with strontium titanate and/or barium titanate composition has been found to possess extremely favorable properties such as high dielectric constant, low dielectric loss, high breakdown strength, low field-induced strain, high electrical resistivity and exceptionally high energy storage capacity. A process is also disclosed for the production of dielectric ceramic materials which includes the use of hot isostatic pressing in an oxygen-containing atmosphere. The disclosed dielectric compositions are useful in capacitors for many applications, including medical devices such as defibrillators and pacemakers.

摘要翻译： 公开了一种介电陶瓷组合物，其包含铌酸铅镁和钛酸锶，钛酸钡或它们的组合。 掺杂剂如Ta，La，Y，Eu，Nd，Sm，Gd，W，Si，Zr和Sb也可以包括在组合物中。 已经发现具有钛酸锶和/或钛酸钡组合物的铅镁铌具有非常有利的性能，例如高介电常数，低介电损耗，高击穿强度，低场致应变，高电阻率和超高能量存储容量 。 还公开了用于生产介电陶瓷材料的方法，其包括在含氧气氛中使用热等静压。 所公开的电介质组合物可用于许多应用的电容器，包括诸如除颤器和起搏器的医疗装置。