Dielectric ceramic composition

Details Dielectric ceramic composition Dielectric ceramic composition

1987-06-08

1988-06-07

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

501135, 501136, C04B 3546

Patent

active

047496681

ABSTRACT:
A dielectric ceramic composition consisting essentially of a solid solution of a main component of a ternary system Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 -Pb(Zn.sub.1/3 Nb.sub.2/3)O.sub.3 -Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3, and additional components composed of PbTiO.sub.3 and a complex perovskite compound of the general formula: A(Mn.sub.1/2 Nb.sub.1/2)O.sub.3 (wherein A is at least one element selected from the group consisting of Pb, Ba, Sr and Ca). The composition may further contain as an additional components, a complex perovskite compound expressed by the general formula: B(Cu.sub.1/2 W.sub.1/2)O.sub.3 wherein B is at least one element selected from the group consisting of Pb, Ba, Sr and Ca. The main component consisting essentially of 66.53 to 67.27 Wt % of Pb.sub.3 O.sub.4, 25.79 to 26.08 wt % of Nb.sub.2 O.sub.5, 1.47 to 5.09 wt % of NiO, 2.00 to 5.49 wt % of ZnO and 0.02 to 1.19 wt % of MgO and having a composition expressed by the general formula:

REFERENCES:
patent: 4216103 (1980-08-01), Fujiwara et al.
patent: 4339544 (1982-07-01), Sakabe et al.
patent: 4544644 (1985-10-01), Yamashita

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