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ZnO-Sb2O3烧结体系的电导和气敏性能

祝柏林; 谢长生; 曾大文; 胡木林; 胡军辉   

  1. 华中科技大学材料学院模具技术国家重点实验室 武汉 430074
  • 收稿日期:2003-03-03 修回日期:2003-04-15 出版日期:2004-03-20 网络出版日期:2004-03-20

Conductivity and Gas Sensitivity of ZnO-Sb2O3 Sintered System

ZHU Bai-Lin; XIE Chang-Sheng; ZENG Da-Wen; HU Mu-Lin; HU Jun-Hui   

  1. The State Key Laboratory of Plastic Forming Simulation and Mould Technology; Materials College; Huazhong University of Science and Technology; Wuhan 430074; China
  • Received:2003-03-03 Revised:2003-04-15 Published:2004-03-20 Online:2004-03-20

摘要: 采用金属蒸气氧化的方法制备了四针状ZnO和近球形Sb2O3纳米颗粒.检测了基于ZnO-Sb2O3烧结体系的电导和气敏性能.通过XRD分析不同重量百分比的ZnO和Sb2O3混合粉末在烧结后的物相变化,据此讨论了ZnO-Sb2O3烧结体系的电导和气敏性能的变化.结果表明:纳米颗粒可以在较低的烧结温度下发生固相反应,并且生成的复合氧化物ZnSb2O6和Zn2.33Sb0.67O4对烧结厚膜的电导和气敏性能起调控作用.

关键词: 纳米颗粒, 电导, 气敏, ZnO-Sb2O3

Abstract: ZnO tetrapod nanowhiskers and Sb2O3 quasi-spherical nanoparticles were prepared by metallic vapour-phase oxidation, and the conductivity and gas sensitivity of thick films based on
ZnO-Sb2O3 sintered system were investigated. The changes in conductivity and gas sensitivity of the thick film were discussed in according to the phase change of the mixed-powder sintered at
650℃ for 2h examined by XRD. The result showed that the nanoparticles could take place solid-phase reaction at lower sintering temperature and the conductivity and gas sensitivity
of the thick film could be modified and controlled by newly formed complex oxide, i.e., ZnSb2O6 and Zn2.33Sb0.67O4.

Key words: nanoparticles, conductivity, gas sensitivity, ZnO-Sb2O3

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