液相法制备ZnO压敏电阻的研究  

Zno Varistors Fabricated by the Liquid Phase Method and their Study

作　　者：孟锡俊[1] 曹全喜[1] 张虎[1] 

机构地区：[1]西安电子科技大学技术物理学院,陕西西安710071

出　　处：《电子科技》2009年第6期72-74,共3页Electronic Science and Technology

摘　　要：利用化学共沉淀法和Sol-Gel法制备,ZnO压敏电阻器的部分添加剂粉料,经过成份验证后与其他添加剂和ZnO主料混合制备压敏元件。元件在烧结后,经过热处理和电老练,其性能较传统的固相球磨制备元件提高很多。液相法制备压敏元件,元件内部晶粒大小分布均匀、气孔率低,而经过电老练,气孔再一次减少,因此得到了高性能的ZnO压敏元件。A portion of the additive powder was fabricated by the chemical coprecipitation method and solgel method. Then the component of this powder was validated and mixed with other additive and ZnO. The ZnO varistors were fabricated by these two methods. After being sintered and the heat treatment and electricity treatment, the performance of these varistors was superior to that of the varistors fabricated by the solid phase method. The ZnO varistors fabricated by the liquid phase method has uniform sized grains distributed uniformly and less porosity. The porosity of these varistors was decreased after the electricity treatment and thus ZnO varistors with better performance were obtained.

关 键 词：ZNO压敏电阻器 化学共沉淀法 SOL-GEL法 电老练 气孔率 

分 类 号：TN305[电子电信—物理电子学]