Piezoelectric ceramic material, and integrated piezoelectric converter using same

Application Number  00128839 Application Date  2000.09.07
Publication Number  1288238 Publication Date  2001.03.21
Priority Information   1999/9/7 JP 253549/99  
Applicant(s) Name  Murata Mfg. Co., Ltd.  
Inventor(s) Name  Harashi Koichi;Nakamichi Koyo;Anto Akira  
Patent Agency Code  31100 Patent Agent  zhou chengze
AbstractA piezoelectric ceramic material which can suppress segregation of a W compound or a W oxide in W-containing sintered PbTiO3 and a piezoelectric transducer employing the ceramic material. The ceramic material contains lead titanate as a primary component; an Mn-containing oxide or an Mn-containing compound and a W-containing compound or a W-containing oxide as secondary components; and an Si-containing oxide or an Si-containing compound as an additional component. Alternatively, the piezoelectric ceramic material contains a primary component containing PbTiO3 and Pb(MnyW(1-y))O3 and additionally SiO2 or PbSiO3.