Process for the preparation of homogeneous metal oxide varistors

Details Process for the preparation of homogeneous metal oxide varistors Process for the preparation of homogeneous metal oxide varistors

1984-02-21

1986-03-11

Barr, Josephine L.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

252518, 252519, 252520, 264 62, 264 65, 264 66, 29621, 338309, C04B 3334, H01B 106

Patent

active

045754403

ABSTRACT:
A process for making a homogeneous metal oxide varistor powder is described. The ingredients desired in a varistor which are water and acid soluble and dissolved in water and acid respectfully to make a solution. The remaining ingredients which are water and acid insoluble are then suspended in the solution to make a homogeneous slurry. The slurry is dried, calcined, reslurried, dried, pressed and sintered. The sintered body has electrical leads attached then encapsulated in an epoxy resin to make an encapsulated varistor package.

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