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氧化铝基陶瓷凝胶注模成型工艺的研究——(I)悬浮体的制备及流变特性

张灿英; 戚凭+; 李镇江; 侯卫丰; 侯耀永   

  1. 青岛化工学院高技术陶瓷研究室 青岛 266042; +青岛大学物理系 青岛 266071
  • 收稿日期:1998-08-10 修回日期:1998-10-15 出版日期:1999-08-20 网络出版日期:1999-08-20

Studies on Gelcasting of Alumina Matrix Ceramic

ZHANG Can-Ying, QI Ping+,  LI Zhen-Jiang, HOU Wei-Feng, HOU Yao-Yong   

  1. Qindao Institute of Chemical Technology Qingdao 266042 China; + Qindao University Qingdao 266071 China
  • Received:1998-08-10 Revised:1998-10-15 Published:1999-08-20 Online:1999-08-20

摘要: 本文研究了单相α Al 及 Zr O (3 Y)- Al 复相陶瓷的凝胶注模成型工艺, 着重研究了低粘度高固相体积分数浓悬浮体的制备及其固化在碱性条件下, 用自制的分散剂 M N 制备出固相含量高达65vol% 、粘度为267m Pa·s 的α- Al 浓悬浮体, 以及低粘度下固相含量达55 vol% 的10 vol% Zr O (3 Y)- Al 复相陶瓷浓悬浮体并研究了凝胶注模成型坯体的性能

关键词: 凝胶注模, α-Al2O3, ZrO2(3Y)-Al2O3, 悬浮体, 电空间稳定

Abstract: The gelcasting of α-alumina and binary zirconia-alumina composites ceramic was further studied. Special emphasis was placed on the preparation and gelation
of concentrated suspension with low viscosity and high solide volume loading. By using dispersant MN made in our laboratory, basic α-alumina concentrated
suspension whose solide loading as high as 65Vol% while viscosity as low as 267 mPa·s was prepared, besides,basic 10Vol% zirconia(3Y)-alumina concentrated
suspension with 55Vol% solide loading and low viscosity was prepared. The properties of gelcasting body were also studied.

Key words: gelcasting, α-alumina, zirconia(3Y)-alumina, suspension,electrosteric stabilization

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