| 锰离子掺杂对SnO_2~-Sb_2O_3系压敏材料电性能的影响 |
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| 引用本文： | 卢振亚,黄欢,陈志武.锰离子掺杂对SnO_2~-Sb_2O_3系压敏材料电性能的影响[J].稀有金属材料与工程,2009,38(Z2). |
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| 作者姓名： | 卢振亚 黄欢 陈志武 |
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| 作者单位： | 华南理工大学,广东,广州,510640 |
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| 基金项目： | 广东省科技攻关项目，广州市科技攻关项目 |
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| 摘 要： | 采用传统电子陶瓷工艺制备了TiO_2-Co_3O_4-Cr_2O_3-Ni_2O_3-MnO掺杂的SnO_2-Sb_2O_3系压敏陶瓷材料.研究了MnO掺杂对SnO_2-Sb_2O_3系压敏陶瓷材料的致密化、小电流区非线性特性及脉冲电流耐受特性的影响.实验发现,少量的MnO掺杂可以改善材料的电压电流非线性特性和耐脉冲电流能力.但是当MnO的添加量多于0.06 mol%时,样品的非线性系数会减小,漏电流会升高.采用Mn(NO_3)_2水溶液作为MnO源能使Mn元素更均匀分布,比采用MnCO_3粉体获得的样品性能更好.当Mn(NO_3)_2添加量为0.06 mol%～0.1 mol%时,获得了电性能接近实际应用要求的产品,其非线性系数介于30～50,压敏电压V_(1mA)介于330～350 V/mm,并且能耐受峰值电流达1.5 kA/cm~2的8/20 μs波脉冲电流.
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| 关 键 词： | SnO_2压敏电阻 非线性特性 脉冲电流测试 |
Influence of Mn on Electronic Performance of SnO_2~-Sb_2O_3 Based Varistor |
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| Lu Zhenya,Huang Huan,Chen Zhiwu.Influence of Mn on Electronic Performance of SnO_2~-Sb_2O_3 Based Varistor[J].Rare Metal Materials and Engineering,2009,38(Z2). |
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| Authors: | Lu Zhenya Huang Huan Chen Zhiwu |
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| Affiliation: | Lu Zhenya,Huang Huan,Chen Zhiwu (South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | SnO2-Sb2O3 based varistor ceramic materials doped with TiO2,Co3O4,Cr2O3,Ni2O3,and MnO were fabricated by conventional electronic ceramic process. The influence of MnO on the densification,low current area V-I nonlinear characteristic and withstanding surge current capability were investigated. It was found that a small amount of MnO addition can improve nonlinear and surge current test performances. When the content of MnO is more than 0.06%,the nonlinear coefficient decreases and the leakage current increa... |
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| Keywords: | SnO_2 varistor nonlinear properties surge current test |
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