本文对ZnO压敏陶瓷添加剂在不同温度下预烧后的结构变化和电性变化进行了研究。实验结果表明,添加剂预烧后有多种新相生成。随着预烧温度的提高,Sb_2O_5相和焦绿石相增加,添加剂烧结体的体积膨胀,密度减小。在400～1300℃温区内,添加剂预烧后不具有明显的非线性,其电导特性服从空间电荷限制电 In this paper, ZnO varistor ceramic additives at different temperatures after calcination structural and electrical changes were studied. The experimental results show that there are many new phases formed after the additives are calcined. With the increase of calcination temperature, the phase of Sb 2 O 5 and pyrochlore phase increased, the volume of additive sintered body expanded and the density decreased. In the temperature range of 400 ~ 1300 ℃, the additive does not have obvious non-linearity after calcination, and its conductivity follows the space charge limited