公开(公告)号：US4882078A

公开(公告)日：1989-11-21

申请号：US279052

申请日：1988-12-02

申请人： Tetsuhiko Nishimura ,  Swapan K. Basu ,  Yukio Chida ,  Yasuo Oguri ,  Shoko Inoue

发明人： Tetsuhiko Nishimura ,  Swapan K. Basu ,  Yukio Chida ,  Yasuo Oguri ,  Shoko Inoue

IPC分类号： C04B35/49 ,  C04B35/493 ,  C04B35/499 ,  H01B3/12 ,  H01L41/187

CPC分类号： C04B35/499 ,  C04B35/493 ,  H01L41/187

摘要： A piezoelectric ceramic composition for actuators, which consists essentially of a composite of perovskite compounds represented by the formulaPb.sub.(1-x) La.sub.x [z{(Zn.sub..alpha. Mg.sub.(1-.alpha.))1/3Nb.sub.2/3 }+(1-z){Zr.sub.y Ti.sub.(1-y) }].sub.(1-x/4) O.sub.3wherein 0.03.ltoreq.x.ltoreq.0.07, 0.50.ltoreq.y.ltoreq.0.65, o