Composition of piezoelectric porcelain
First Claim
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1. A composition of piezoelectric porcelain comprising:
- a main component including x(Pb2Sb2O7)½
. (1−
x)[Pba(ZryTiz)O3], provided that 0.98≦
a≦
0.999, 0.005≦
x≦
0.05, 0.50≦
y≦
0.54, 0.46≦
z≦
0.50, and y+z=1;
0.1 to 1.0 wt % of at least one of W, Sb, Nb, and Ta in terms of WO3, Sb2O3, Nb2O5, and Ta2O5 to the weight of 1 mol of the main component; and
0.01 to 0.1 wt % of Si in terms of SiO2 to the weight of 1 mol of the main component.
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Abstract
There is provided a composition of piezoelectric porcelain which is composed as x(Pb2Sb2O7)½. (1−x)[Pba(ZryTiz)O3] (provided that 0.98≦a≦0.999, 0.005≦x≦0.05, 0.50≦y≦0.54, 0.46≦z≦0.50, y+z=1) is a main component, and to the weight of 1 mol of the main component, 0.1 to 1.0 wt % of at least one kind of W, Sb, Nb, and Ta in terms of WO3, Sb2O3, Nb2O5, and Ta2O5 is added as a sub component, and 0.01 to 0.1 wt % of Si in terms of SiO2 is added as a further sub component.
29 Citations
2 Claims
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1. A composition of piezoelectric porcelain comprising:
-
a main component including x(Pb2Sb2O7)½
. (1−
x)[Pba(ZryTiz)O3], provided that 0.98≦
a≦
0.999, 0.005≦
x≦
0.05, 0.50≦
y≦
0.54, 0.46≦
z≦
0.50, and y+z=1;
0.1 to 1.0 wt % of at least one of W, Sb, Nb, and Ta in terms of WO3, Sb2O3, Nb2O5, and Ta2O5 to the weight of 1 mol of the main component; and
0.01 to 0.1 wt % of Si in terms of SiO2 to the weight of 1 mol of the main component.
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-
2. A composition of piezoelectric porcelain comprising:
-
a main component including x(Me2Sb2O7)½
. (1−
x)[Pba(ZryTiz)O3], provided that 0.98≦
a≦
0.999, 0.005≦
x≦
0.05, 0.50≦
y≦
0.54, 0.46≦
z≦
0.50, y+z=1, and Me is at least one of Ba and Sr;
0.1 to 1.0 wt % of at least one of W, Sb, Nb, and Ta in terms of WO3, Sb2O3, Nb2O5, and Ta2O5 to the weight of 1 mol of the main component; and
0.01 to 0.1 wt % of Si in terms of SiO2 to the weight of 1 mol of the main component.
-
Specification