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无机材料学报

无机材料学报

• 研究论文 • 上一篇    

纳米ZnO对纳米ZrO2(8Y)致密特性及电导率影响研究

刘毅1; 劳令耳1; 袁望治2; 黄英才1   

  1. 1. 贵州工业大学基础部, 贵阳 550003; 2. 华东师范大学物理系, 上海 200065
  • 收稿日期:2002-08-05 修回日期:2002-09-16 出版日期:2003-09-20 网络出版日期:2003-09-20

Effect of Nano-ZnO Particles on the Densification Properties and Conductivity of Nano-ZrO2(8Y)

LIU Yi1; LAO Ling-Er1; YUAN Wang-Zhi2; HUANG Ying-Cai1   

  1. 1. Department of Basic Curriculum; Guizhou University of Technology; G uiyang 550003; China; 2. Department of Physics; East China Normal University; Shanghai 200062; China
  • Received:2002-08-05 Revised:2002-09-16 Published:2003-09-20 Online:2003-09-20

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摘要： 采用纳米ZrO2(8Y)粉和纳米ZnO粉为原料,对掺少量ZnO的ZrO2(8Y)进行无压烧结研究.实验结果表明,掺少量的ZnO能促进ZrO2与Y2O3的反应,加快四方相向立方相的转变,样品致密度和电导率显著提高.掺0.5wt％ZnO样品在1200℃煅烧2h的陶瓷致密度为94％,700℃时的电导率为9.02×10-3cm-1·Ω-1.

关键词: 纳米ZrO2（8Y）, 纳米ZnO, 致密度, 电导率

Abstract: With adding of nano-ZnO, nano ZrO2(8Y) powder was used as raw materials for pressureless sintering at 1200℃. The results show that a small addition
of nano-ZnO accelerates the reaction between Y2O3 and ZrO2 in ZrO2(8Y). The ZrO_2(8Y)ceramic without nano-ZnO exhibits predominant tetragonal phase
with a small percentage of monoclinic, but the samples doped with nano-ZnO(0.5%～2.0% in mass)show a purely cubic phase. The densification and the conductivity of the
ceramic doped with nano-ZnO increase significantly.The densification of 94% and the conductivity of 9.02×10-3cm-1·Ω-1 at 700℃ were
observed for the sintered body doped with 0.5wt% nano-ZnO.

Key words: nano-ZrO2（8Y）, nano-ZnO, densification, conductivity

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