Deflocculation Study of Nano-sized Y-TZP Suspensions

Journal of Inorganic Materials

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Deflocculation Study of Nano-sized Y-TZP Suspensions

LIU Yang-Qiao; GAO Lian

State Key Lab of High Performance Ceramics & Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China

Received:2001-11-15 Revised:2001-12-11 Published:2002-11-20 Online:2002-11-20

Abstract

Abstract: The influences of several anionic dispersants on the colloidal and rheological properties of nanosized Y-TZP
suspensions were investigated. Isothermal adsorption was conducted to study the interaction between the dispersant and the powder. It was found that
these dispersants adsorbed chemically on the powder. The zeta potential of Y-TZP powder at alkaline region changed from --20mV to --40～--50mV
after the addition of dispersants. Rheological measurements showed that the dispersant addition significantly enhanced the fluidity of the slurry. The
deflocculation mechanism of the dispersant for the suspension was finally discussed.

Key words: nano-Y-TZP, deflocculation, zeta potential, rheology

CLC Number:

O648

LIU Yang-Qiao,GAO Lian. Deflocculation Study of Nano-sized Y-TZP Suspensions[J]. Journal of Inorganic Materials.

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Deflocculation Study of Nano-sized Y-TZP Suspensions

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