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无机材料学报

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高分散、均混合Al2O3-SiC-ZrO2(3Y)水悬浮液

张巨先a,b; 杨静漪a; 郁新a; 侯耀永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:1999-02-20 网络出版日期:1999-02-20

Preparation of Highly Dispersed and Uniformly Mixed Aqueous Suspension of Al2O3-SiC-ZrO2(3Y) Precursor

ZHANG Ju-Xiana,b; YANG Jing-Yiia; YU Xina; HOU Yao-Yonga; GAO Long-Qianb   

  1. a(Qinydao Institute of Chemical Technology Qinydao 266042 China）b（Beijing vacuum Electronics Research Institute Beijing 100016 China
  • Received:1997-11-13 Revised:1998-01-24 Published:1999-02-20 Online:1999-02-20

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摘要： 用微波法制备纳米水合二氧化锆，通过包覆工艺，将Y（OH）3均匀地包覆在水合二氧化锆粒子表面，制备出ZO2（3Y）的先驱体.然后用聚甲基丙烯酸铵（PMAA－NH4）对α－Al2O3、纳米SiC及包覆水合二氧化锆表面改性．使三种单相水悬浮液在PH＝9．0时，粒子表面电性相同，且有良好分散状态．从而制备出高分散、均混合Al2O3－SiC－ZrO2（3Y）先驱体水悬浮液．

关键词: 胶体特性, 表面改性, 高分散悬浮液, 均混合悬浮液

Abstract: ZrO2(3Y) precursor was prepared via hydrous-zirconia which was Y(OH)3-coated preparedby microwave heating coated with Y(OH)3. The surfaCes of Al2O3, nanometer SiC and Y(OH)3 coated hydrous-zirconia particles were modified with PMAA-NH4, so that three kinds of periclesin aqueous suspensions had the same charge and highly dispersed state at pH=9.0. Finally, ahighly dispersed and uniformly mixed suspension of Al2O3-SiC-ZrO2(3Y) precursor was obtainedfrom miting three kinds of single suspension.

Key words: colloidal behaviour, surfaCe modification, highly dispersed suspension, uniformlymixed suspension

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