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Study on the Aqueous Tape Casting of TiC Green Sheets

ZHANG  Jingxian, JIANG  Dongliang, HUANG  Zhenren, TANShouhong

（Shanghai Institute of Ceramics‚China Academy of Science）

Abstract: The homemade TiC powders（D50＝0.6μm‚BET＝14.55m2／g）are used in this paper．The TiC powders are pre－treated to improve the disperserbility of them in water．According the surface properties of TiC powders as well as the zeta potential date‚a cationic polymer PEI is selected as dispersant．The influence of pH and content of dispersant on the zeta potential and dispersion of TiC slurries are characterized．PVA is selected as binder and glycerol as plasticizer．Rheological measurements show that the slurries exhibit thixotropy behavior‚which is suitable for tape casting．Finally‚the TiC green sheets are prepared and characterized by SEM．

Key words: aqueous tape casting‚zeta potential‚dispersant‚binder‚plasticizer‚rheological measurement


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