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磁化水配料对TiO₂压敏陶瓷电性能和微观结构的影响

EFFECT OF MAGNETIZED WATER ON THE ELECTRIC PROPERTIES AND MICROSTRUCTURE OF TiO₂-BASED VARISTOR CERAMICS

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【Author】 LI Hongyun 1,3, ZHANG Yuchun 2, LUO Shaohua 1, YAO Weihua 1, TANG Zilong 1 ZHANG Zhongtai 1, ZHUANG Yan 3, XIONG Xizhou 3 (1. Department of Materials Science and Engineering; 2. Department of Environment Science and Engineering, Tsinghua University, Beijing 100084; 3. Guangzhou Sunrise Electronic Co. Ltd, Guangzhou 510335, China)

【机构】清华大学材料科学与工程系；清华大学环境科学与工程系；广州新日电子有限公司；广州新日电子有限公司北京100084；广州510335；北京100084；广州510335；

【摘要】研究了使用磁化水配料对TiO2 压敏陶瓷电性能和微观结构的影响。电性能测量及SEM和XRD微观结构分析结果表明 :磁化水配料制备的TiO2 压敏电阻具有较低的压敏电压和较高的非线性指数α。材料的主晶相为金红石相 ,由Ce ,Si,Ti组成的Perrierite第二相均匀分布在晶界区域。因此 ,采用磁化水配料可以改善材料的工艺性能和陶瓷烧结体的微观结构 ,从而提高元件的电性能更多还原

【Abstract】 The influence of magnetized water on the microstructure and electrical properties of TiO₂ varistor ceramics was investigated with the aids of SEM, XRD and electrical property measurement. It is found that lower varistor voltage and higher non_linear coefficient α can be achieved for TiO₂ varistor ceramic by using magnetized water. The XRD and SEM results show that the main crystal phase is rutile TiO₂, which is surrounded by the second phase Perrierite composed of Ce, Si and Ti in the grain boundary region. It is proposed that the processing property and microstructure of TiO₂ varistor ceramics can be improved by using magnetized water resulting in improving the electrical properties of the ceramics.更多还原