Abstract:

The Bi4Ti3O12 plays an important role in the process of sintering of the lowvoltage zinc oxide varistors.In this article,sintering of ceramic doped with Bi4Ti3O12 is studied by using SEM.The results show that varistors doped with nanometer Bi4Ti3O12 powder can obtain lower breakdown voltage,and the form and distribution of Zn2TiO4 phase affect the uniformity of breakdown voltage.

Key words: lowvoltage zinc oxide varistor;Bi4Ti3O12;grain growth