Sintered varistor material with small particle size

Details Sintered varistor material with small particle size Sintered varistor material with small particle size

1992-03-24

1995-01-17

Hille, Rolf

Compositions

Electrically conductive or emissive compositions

Metal compound containing

252518, 257 4, 257 43, H01B 106, H01L 4500

Patent

active

053823850

ABSTRACT:
A varistor material having a non-linear coefficient of at least 30 and a varistor voltage of at least 800 V/mm is disclosed. The varistor is produced by a method including commingling an admixture of ZnO and a manganese compound while preventing the admixture from contacting with a surface containing an element belonging to group IIIb of the Periodic Table. The resulting mixture is calcined and then pulverized while preventing the contact with a IIIb element-containing surface to obtain a pulverized product having a content of impurity compounds of a IIIb element of not greater than 20 ppm by weight. The pulverized product is molded and sintered at such a temperature as to obtain the varistor formed from particles with an average particle size of not greater than 5 .mu.m.

REFERENCES:
patent: 3899451 (1975-08-01), Ichinose et al.
patent: 3928242 (1975-12-01), May
patent: 3953371 (1976-04-01), May
patent: 4285839 (1981-08-01), Wong
patent: 4296002 (1981-10-01), Sokoly et al.
patent: 4397775 (1983-08-01), Levinson
patent: 4559167 (1985-12-01), Julke et al.
patent: 4700169 (1987-10-01), Tanno
patent: 4894185 (1990-01-01), Djega-Mariadassou et al.
patent: 5039452 (1991-08-01), Thompson et al.
patent: 5073302 (1991-12-01), Igari et al.
patent: 5076979 (1991-12-01), Ochi et al.
patent: 5143651 (1992-09-01), Caffin

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