Gelcasting of alumina with a mixed PVP-MAM system

被引：22

作者：

Ma, JT ^{[1
]}

Yi, ZZ

Xie, ZP

Zhou, LJ

Miao, HZ

Zhang, BQ

Lin, XP

机构：

[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China

[2] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[3] Honghe Univ, Dept Chem, Yunnan 661100, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2005年 / 31卷 / 07期

基金：

中国国家自然科学基金;

关键词：

alumina; polyvinylpyrrolidone; methacrylamide; gelcasting;

D O I：

10.1016/j.ceramint.2004.10.019

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

A common and fatal problem of the low-toxicity gelcasting is the low flexural strength of green bodies. The objective of this study was to solve the problem by introducing water-soluble polyvinylpyrrolidone (PVP) polymer to the monomer system. The low-toxicity monomer and ceramic powder were selected as methacrylamide (MAM) and alumina, respectively. Flexural strength of green bodies was improved nearly by 30%, with no significant change in the property of sintered bodies when the addition amount of PVP is 2.8 wt.%. Influence of PVP content on theological properties of alumina suspensions, their gelation time, and the microstructure of green and sintered bodies were investigated. (c) 2004 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：1015 / 1019

页数：5

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