Method of making homogenous metal oxide varistor powders

Details Method of making homogenous metal oxide varistor powders Method of making homogenous metal oxide varistor powders

1977-10-25

1979-03-06

Padgett, Benjamin R.

Compositions

Electrically conductive or emissive compositions

Metal compound containing

252519, 252521, 106 395, 264 61, 264 66, 264 13, 264332, H01B 108, H01B 106

Patent

active

041429966

ABSTRACT:
A method for manufacturing metal oxide varistors with an extremely homogeneous dispersion of metal oxides is disclosed. In accordance with one embodiment of the invention, nitrates of zinc and certain metal additives are heated to form a hydrated solution which is further heated to form a dehydrated melt, which is further heated to form an extremely homogeneous dispersion of the metal oxides. Tin and antimony are added as oxides rather than nitrates. This process eliminates the need for ball milling.

REFERENCES:
patent: 3950274 (1976-04-01), May
patent: 4094061 (1978-06-01), Gupta et al.

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