文献类型：期刊文献

英文题名：Effect of acid leaching on rheological behavior of silicon nitride aqueous suspension

作者：Liu, X.J.[1]; Huang, L.P.[1]; Xu, X.[1]; Gu, H.C.[2]; Fu, X.R.[1]

机构：[1]Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China;[2]E China Univ Sci & Technol, Inst Tech Chem & Phys, Shanghai 200237, Peoples R China

年份：2000

卷号：19

期号：3

起止页码：177

外文期刊名：JOURNAL OF MATERIALS SCIENCE LETTERS

收录：;EI(收录号：2000165078270);WOS:【SCI-EXPANDED(收录号:WOS:000084708200001)】；

语种：英文

外文关键词：Leaching - Rheology - Surface phenomena - Suspensions (fluids) - Yield stress

摘要：The effect of acid leaching on the rheological behavior and Zeta potential of Si3N4 aqueous suspension was studied. The isoelectric point (IEP) of Si3N4 particles shifts to basic region due to the decrease of the oxidizing degree on the surface of acid leached Si3N4 powder. Because the Zeta potential of Si3N4 particles increases efficiently, the rheological properties of Si3N$-$/4 leached suspensions are significantly improved and the maximum solids loading increases from 50 to 55 vol%. The acid leaching process can be successfully used to optimize the rheological behavior of Si3N4 suspension and to prepare suspension with promising properties.