SrTiO_3基压敏陶瓷低压化途径

The approach to lower the voltage of SrTiO_3 based varistor ceramics.

以固相法合成 Sr Ti O3+Nb2 O5 +Mn O2 作为基本系统 ,分别采用草酸盐热分解法制备 Sr Ti O3主晶相及L i2 CO3代替 Mn O2 作受主掺杂等手段来修正基本系统 ,以降低压敏电压。结果表明 ,以上措施可有效地降低压敏电压 ,改善压敏 -介电性能。

ELECTRONIC COMPONENTS & MATERIALS (China), Vol 19, No 3, P 5 6 (Jun 2000) In Chinese In conventional formula, SrTiO 3 is prepared by solid phase reaction and MnO 2 is used as acceptor. To lower the varistor voltage, SrTiO 3 prepared by oxalate decomposition and acceptor of Li 2CO 3 are adopted instead of the formers respectively. The experiment results show that varistor voltage is effectively lowered, and dielectric properties improved also. (6 refs.)