| 摘要 |
PURPOSE: A piezoelectric ceramic material PZT used in the production of ultrasonic transducer or power supply is provided to reduce amount of rare-metal required to produce piezoelectric ceramic parts by specific ratio of additives based on Bi, Ln, In, Co, Fe, Cr, Ni, Zn, Mg elements. CONSTITUTION: The piezoelectric ceramic material comprises three-component PbZrO3-PbTiO3-PbSb2/3Mn1/3O3 produced by combining m mol% of Bi4/5A1/5(V1/2B'1/2B")1/2O3 composition into 1-m mol% of Pb(1-alpha-beta) Sr(alpha) Cd(beta)(Sb2/3Mn1/3)(1-gamma)O3 composition (wherein A=Bi, Ln, In; B'=Co, Fe, Cr; B"=Ni, Zn, Mg; m=0.03-0.046; alpha=0-0.4; beta=0.018-0.025; gamma=0.03-0.065; and x=0.46-0.54). The ceramic material can reduce sintering temperature to 940-1060 deg.C. and the content of Pd among the electrode at the sintering temperature to 10-30% and the amount of rare-earth metal.
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