Method of making varistor or capacitor

Details Method of making varistor or capacitor Method of making varistor or capacitor

1988-05-06

1993-08-10

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 63, 156 89, C04B 3564

Patent

active

052346412

ABSTRACT:
A method of manufacturing an improved visitor or capacitor, and the resultant improved varistor or capacitor is described. In accordance with the method the ceramic layers of the varistor are formed by providing at least two strata separated by a boundary layer which resists grain growth thereacross. The ceramic body is sintered under temperature conditions sufficiently low that grain growth within the strata defining the ceramic layers is restricted to the strata such that grain growth across the boundary material is minimized. By this method the ceramic layers have a predictable number of grain boundaries between adjacent electrodes.

REFERENCES:
patent: 2778762 (1957-01-01), Eisler
patent: 3496008 (1970-02-01), Haskins et al.
patent: 3794707 (1974-02-01), O'Neill et al.
patent: 3798762 (1974-03-01), Harris et al.
patent: 3999004 (1976-12-01), Chirino et al.
patent: 4153491 (1979-05-01), Swiss et al.
patent: 4289719 (1981-09-01), McIntosh
patent: 4353957 (1982-10-01), Rutt et al.
patent: 4598107 (1986-07-01), Herron et al.

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