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W. Mielcarek, K. Prociów, J. Warycha<br />

The inter-granular phase consisted of Bi and Zn. Sn incorporated into the crystal<br />

lattice of spinel. The basic crystal phases were δ - Bi 2<br />

O 3<br />

(PDF27-52) and zinc-antimony<br />

spinel (PDF15-687).<br />

Fig. 10. Varistor with SnO 2<br />

-modified Bi 2<br />

O 3<br />

. Marker 20 µm.<br />

Rys. 10. Warystor domieszkowany Bi 2<br />

O 3<br />

modyfikowanym SnO 2<br />

.<br />

The I-V characteristics of varistors doped with modified Bi 2<br />

O 3<br />

are presented in<br />

Fig. 11.<br />

Fig. 11. The I-V characteristics of varistors doped with modified Bi 2<br />

O 3<br />

.<br />

Rys. 11. Charakterystyki napięciowo-prądowe warystorów domieszkowanych modyfikowanym<br />

Bi 2<br />

O 3<br />

.<br />

95

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