Metal oxide varistor and method

Details Metal oxide varistor and method Metal oxide varistor and method

1979-03-08

1981-06-09

Kyle, Deborah L.

Compositions

Electrically conductive or emissive compositions

Carbide containing

252518, 252519, 264 61, 264104, 338 20, H01B 104

Patent

active

042724112

ABSTRACT:
A composition is provided for use in forming varistor blocks containing mostly zinc oxide together with other impurities, including significant amounts of silicon carbide to a concentration of less than one molar percent of the total varistor composition. The method of forming varistor blocks according to the invention includes mixing zinc oxide powder together with the silicon carbide and other impurities, and then sintering the mixture at a temperature in the range of from approximately 1100.degree. C. to approximately 1250.degree. C.

REFERENCES:
patent: 3380936 (1968-04-01), Masuyama et al.
patent: 3788997 (1974-01-01), MacKenzie
patent: 3928245 (1975-12-01), Fishman et al.
patent: 3938069 (1976-02-01), May
patent: 3953373 (1976-04-01), Matsumura et al.
patent: 3959543 (1976-05-01), Ellis
patent: 4003855 (1977-01-01), Wong
patent: 4046847 (1977-09-01), Kresge
patent: 4169071 (1979-09-01), Eda et al.
patent: 4180483 (1979-12-01), Ho et al.
patent: 4184984 (1980-01-01), Levinson

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