Gelcasting of alumina ceramics in the mixed acrylamide and polyacrylamide systems

被引：58

作者：

Ma, JT ^{[1
]}

Xie, ZP

Miao, HZ

Huang, Y

Cheng, YB

Yang, WY

机构：

[1] Tsing Hua Univ, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Monash Univ, Sch Phys & Mat Engn, Clayton, Vic 3800, Australia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2003年 / 23卷 / 13期

基金：

中国国家自然科学基金;

关键词：

A(2)O(3); gelcasting; gelation inhibition; polyacrylamide; surface spallation;

D O I：

10.1016/S0955-2219(03)00041-4

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ceramic gelcasting without inhibition of gelation due to the presence of oxygen must be performed in a nitrogen atmosphere to avoid surface spallation of the green body, which is a complex and expensive process. This study shows that the surface spallation of ceramic green bodies gelcast in air could be suppressed by introducing a proper amount of water-soluble polymer, polyacrylamide (PAM), to the acrylamide monomer solution. The dispersion of Al2O3 powder in a water solution containing PAM was investigated. The theological behavior and the gelling behavior of the alumina suspension were analyzed. Flexural strength and microstructure of the gelcast green and sintered bodies were studied. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：2273 / 2279

页数：7

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