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包覆型ZrO2(3Y)粉体研制

张巨先ab; 杨静漪a; 郁新a; 侯耀水a; 高陇桥b   

  1. a青岛化工学院; 青岛 266042; b电子部十二所; 北京100016
  • 收稿日期:1997-11-13 修回日期:1998-01-24 出版日期:1998-12-20 网络出版日期:1998-12-20

Preparation of Coated ZrO2(3Y) Powder

ZHANG Ju-Xianab; YANG Jing-yia; YU Xin HOUa; Yao-Yonga; GAO Long--Qiaob   

  1. aQingdao Institute of Chemical Technology Qingdao 266042 China; bBeijing Vacuum Electronics Research Institure Beijing 100016 China
  • Received:1997-11-13 Revised:1998-01-24 Published:1998-12-20 Online:1998-12-20

摘要:

用微波法制备单分散、纳米水合二氧化锆,利用异相成核工艺在水合二氧化锆粒子表面均匀包覆一层Y(OH)3,制备出包覆型ZrO2(3Y)粉体先驱体.最后对煅烧ZrO2(3Y)粉体进行相结构分析,发现在室温下包覆型ZrO2(3Y)粉体中无m-ZrO2存在.结果表明;利用包覆的方法能将Y2O3均匀地加入到ZrO2中,提高ZrO2(3Y)粉体中亚稳定t-ZrO2的含量.

关键词: 异相成核法, 包覆, 亚稳定t-ZrO2

Abstract:

Zro2(3Y) precursor which uniformly mixed with Y2O3 was prepared via hydrous-zirconia,which was prepared by microwave heating, coated with Y(OH)3 by heterogeneous nucleation processing. After ZrO2(3Y) precursor was calcined, its phase structure was analyzed by XRD. It wasfound that m-ZrO2 didn t exist in ZrO2(3Y) powder at room temperature. The results indicatedthat Y2O3 can uniformly be added in ZrO2 by coating means and the amount of metastable t-ZrO2 in ZrO2(3Y) powder can be increased.

Key words: heterogeneous nucleation means, coating, metastable t-ZrO2

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