| 摘要 |
Composition for piezoelectric ceramics includes a main component and a sub component. The main component is expressed with a general expression of aPb(Mg1/3Nb2/3)O3-bPb(Yb1/3Nb2/3)O3-cPbTiO3-dPbZrO3, where a+b+c+d=1, 0.01 a 0.07, 0.01 b 0.07, 0.35 c 0.55, 0.4 d 0.6. The sub component contains 0.1 to 0.7wt% of Mn in terms of manganese oxide, 0.01 to 0.3wt% of Cr in terms of chromium oxide and 0.05 to 0.5wt% of Co in terms of cobalt oxide per the weight of 1 mol of main component. |
