Varistor or capacitor and method of making same

H - Electricity – 01 – C

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H01C 7/10 (2006.01) B28B 1/00 (2006.01) B32B 18/00 (2006.01) C04B 35/00 (2006.01) H01C 7/102 (2006.01) H01C 7/12 (2006.01) H01C 17/00 (2006.01) H01G 4/12 (2006.01) H01G 4/30 (2006.01) H01G 13/00 (2006.01)

Patent

CA 1314692

ABSTRACT A method of manufacturing an improved varistor 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.

576659

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