MATERIAL FOR HIGH FIELD INTENSITY VARISTOR Russian patent published in 2015 - IPC H01C7/00 

FIELD: electricity.

SUBSTANCE: varistor material comprises ZnO forming ZnO phase, Bi₂O₃ forming liquid phase that influences grain growth in sintering process as well as spinel phase including mixture of Mn, Co, Ni and Cr; it may also contain additionally 0.05 mol % SiO₂, at that quantity of pyrochlore phase included into the varistor material ensures ratio of pyrochlore phase to spinel phase is equal to 0.15:1.

EFFECT: increased intensity of the switching field and reduced losses of the varistor power.

10 cl, 5 dwg, 2 tbl