Pre-glassing method of producing homogeneous sintered ZnO non-li

Details Pre-glassing method of producing homogeneous sintered ZnO non-li Pre-glassing method of producing homogeneous sintered ZnO non-li

1976-12-30

1978-09-05

Padgett, Benjamin R.

Compositions

Electrically conductive or emissive compositions

Metal compound containing

252519, 252520, 252521, H01B 108

Patent

active

041118529

ABSTRACT:
A method of making a homogeneous sintered body, which can exhibit non-linear V-I characteristics, comprises the steps of: (1) forming a single phase, chemically homogeneous glass, from a mixture of oxides containing at least Bi.sub.2 O.sub.3, which is effective to cause non-linearity within a ZnO ceramic body, (2) mixing 2.5 wt.% to 40 wt.% of the single phase, chemically homogeneous Bi.sub.2 O.sub.3 type glass, with 60 wt.% to 97.5 wt.% of ZnO particles, to form a uniform mixture, (3) pressing the glass-ZnO mixture, to form a consolidated body, and (4) sintering the pressed body, to form a ceramic body consisting of ZnO particles and a chemically homogeneous insulating layer formed from the Bi.sub.2 O.sub.3 type glass coating the ZnO particles and bonding the ZnO particles together.

REFERENCES:
patent: 3663458 (1972-05-01), Masuyama et al.
patent: 3838378 (1974-09-01), Matsuoka et al.
patent: 3950274 (1976-04-01), May

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