公开(公告)号：US5173460A

公开(公告)日：1992-12-22

申请号：US782030

申请日：1991-10-24

申请人： An-Xiang Kuang ,  Tao-Shen Zhou ,  Chang-Xin He ,  Li-Ying Chai ,  Ju-Fang Xie

发明人： An-Xiang Kuang ,  Tao-Shen Zhou ,  Chang-Xin He ,  Li-Ying Chai ,  Ju-Fang Xie

IPC分类号： C04B35/499 ,  H01L41/187

CPC分类号： C04B35/499 ,  H01L41/187

摘要： This invention relates to a piezoelectric ceramic material of a quarternary system, formulated on the basis of ternary system materials (PCM and PMN). Said quarternary system piezoelectric ceramic material consists of lead niobate with Mg (Pb (Mg.sub.1/3 Nb.sub.2/3)O.sub.3, lead niobate with Mn (Pb(Mn.sub.1/3 Nb.sub.2/3)O.sub.3), lead zirconate (PbZrO3) and lead titanate (PbTiO3), and possesses excellent properties for large power output purposes, and is suitable for making piezoelectric transformers of large power output. A single piece piezoelectric transformer (dimensions 100.times.25.times.36 mm3) using the material of the present invention is found to have a maximum output power of 50 W. The material according to this invention has a simple preparing process, a wider and lower sintering temperature range, is fine and compact in ceramic structure, and has a high rate of success of finished products.