Piezoelectric ceramic materials

Details Piezoelectric ceramic materials Piezoelectric ceramic materials

1986-12-23

1988-08-23

Dixon, Jr., William R.

Compositions

Piezoelectric

501134, C04B 3546, C04B 3548, C04B 3549

Patent

active

047659190

ABSTRACT:
A piezoelectric ceramic material composed of a ternary solid solution of Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 - PbTiO.sub.3 - PbZrO.sub.3 having the composition within an area encircled by lines connecting points A(15 mol % of Pb(Ni.sub.1/3 Nb.sub.170 )O.sub.3, 45 mol % of PbTiO.sub.3 and 40 mol % of PbZrO.sub.3), F(40 mol % of Pb(Ni.sub.166 Nb.sub.2/3)O.sub.3, 30 mol % of PbTiO.sub.3 and 30 mol % of PbZrO.sub.3), C(51 mol % of Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3, 24 mol % of PbTiO.sub.3 and 25 mol % of PbZrO.sub.3), G(45 mol % of Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3, 35 mol % of PbTiO.sub.3 and 20 mol % of PbZrO.sub.3), H(40 mol % of Pb(Ni.sub.1/3 Nb.sub.170 )O.sub.3, 40 mol % of PbTiO.sub.3, and 20 mol % of PbZrO.sub.3) and I(30 mol % of Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3, 45 mol % of PbTiO.sub.3 and 25 mol % PbZrO.sub.3). And at least one additive selected from the group consisting of Sb.sub.2 O.sub.3, Nb.sub.2 O.sub.5, Bi.sub.2 O.sub.3, La.sub.2 O.sub.3, WO.sub.3 is added to the ternary solid solution in an amount of 0.1 to 1.0 weight % of the ternary solid solution.

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Piezoelectric Ceramics, B. Jaffe, et al., pp. 152 & 201, Academic Press, London, 1971.

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