Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (6): 74-78.

Previous Articles     Next Articles

Consolidation in-situ Forming of Aluminium Oxide Ceramic by Acetate Starch

Chen Ling1  Song Xian-liang2  Ye Jian-dong3  Li Xiao-xi1   

  1. 1.Research Institute of Light Industry＆ Chemical Engineering,South China Univ,of Tech.,Guangzhou 510640,Guangdong.China;2.College of Food Science,South China Agricultural Univ.,Guangzhou 51064 2,Guangdong,China;3.College of Materials Science and Engineering,South China Univ.ofTech.,Guangzhou 51064 0,(,uangdong,China
  • Received:2004-11-25 Online:2005-06-25 Published:2005-06-25
  • Contact: 陈玲(1961-)，女，硕士，副研究员，主要从事碳水化合物化学与技术方面的研究。 E-mail:felchen@scut.edu.cn
  • About author:陈玲(1961-)，女，硕士，副研究员，主要从事碳水化合物化学与技术方面的研究。
  • Supported by:

    武器装备预研基金资助项目(51412020401JW1601)

PDF

319

Abstract:

A new consolidation in-situ forming process for high-perform ance aluminium oxide ceramic using starch as the consolidator/binder was investigated.The effects of different contents of acetate starch on the rheologicl be-haviour of the ceramic slip,as well as the linear shrinkage,density,strength and microstructure of the green body were discussed.The results indicate that,when the content of acetate starch is 0.5% ~1.5% (mass fraction).the apparent viscosity of alumina slurry,which is always less than 1 Pa·s,increases with the content.Moreover,with the increase in starch content,the linear shrinkage rate and the density of the dried body decrease. while the strength of the dried body almost linearly increases.Green body with homogeneously-distributed density and pore size was also obtained in this research. It is concluded that Al2O3ceramics can be consolidation in-situ formed.based on the gelling network of therm ally swelled and gelatinized acetate starch.

Key words: acetate starch, aluminium oxide, ceramic slip, consolidation in-situ forming