Thick film ZnO based varistors prepared by screen printing
Thick film ZnO based varistors prepared by screen printing
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DOI：
10.1016/j.jeurceramsoc.2006.02.016
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发表时间：
2006-01-01
影响因子：
5.7
通讯作者：
Kosec, M.
中科院分区：
文献类型：
--
作者：
de la Rubia Lopez, Miguel Angel;Peiteado, M.;Kosec, M.
采用丝网印刷技术在致密氧化铝衬底上制备了ZnO-Bi2O3-Sb2O3体系的厚膜压敏电阻。为了控制Bi2O3在压敏电阻薄膜中由于高面积体积比而在烧结过程中过度挥发，并作为改善其电响应的一种手段，设计了不同的处理策略。选择不同的起始粉末进行预处理，得到不同的相，控制富bi液相的形成。所观察到的电性能的显著差异与起始粉末的选择有关。(c) 2006 Elsevier Ltd.版权所有。
Thick film varistors based on the system ZnO-Bi2O3-Sb2O3 have been prepared by screen printing technology on dense alumina substrates. Different processing strategies have been designed in order to control the excessive volatilization of Bi2O3 in varistor films during the sintering, due to the high area-volume ratio, and as a means to improving their electrical response. Starting powders were selected and pre-treated in different ways to obtain different phases and control the Bi-rich liquid phase formation. Significant differences have been observed in the electrical properties which are related to the selection of the starting powders. (c) 2006 Elsevier Ltd. All rights reserved.