Method of producing internal boundary layer ceramic compositions

Details Method of producing internal boundary layer ceramic compositions Method of producing internal boundary layer ceramic compositions

1979-03-26

1980-12-02

Cooper, Jack

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

252 623BT, 252 635, 252520, 252521, 106 733, H01B 312, C04B 3546, C04B 3564

Patent

active

042370841

ABSTRACT:
An improved polycrystalline semiconducting ceramic composition comprises an alkaline earth metal titanate doped with a hexavalent metal oxide such as (MO.sub.3)(Bi.sub.2 O.sub.3).sub.x where M is tungsten or molybdenum, and x ranges from 0 to 7, which is liquid phase sintered with lead germanate to produce internal insulating boundaries. The composition is fine grained and provides thin-layer, multi-layer capacitors that exhibit high dielectric constant values, low dissipation factors, and low temperature and voltage coefficients of capacitance.

REFERENCES:
patent: 3933668 (1976-01-01), Takahashi et al.
patent: 4096098 (1978-06-01), Umeya et al.
patent: 4143207 (1979-03-01), Itakura et al.
patent: 4158219 (1979-06-01), Payne et al.

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