Chapter 12. Use of Polyphosphates as Deflocculants of Alumina
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1991 The American Ceramic Society, Inc.
Materials & Equipment/Whitewares: Ceramic Engineering and Science Proceedings, Volume 12, Issue 1/2
How to Cite
Faison, J. and Haber, R. A. (1991) Use of Polyphosphates as Deflocculants of Alumina, in Materials & Equipment/Whitewares: Ceramic Engineering and Science Proceedings, Volume 12, Issue 1/2 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313183.ch12
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1991
Print ISBN: 9780470374979
Online ISBN: 9780470313183
- ceramic oxide suspensions;
- phosphate defIocculants;
Studies on the use of phosphate deflocculants in aqueous alumina slip-casting suspensions were performed to define the effects of chain length and concentration on suspension viscosity. On a weight basis, longer chain phosphates such as sodium hexametaphosphate (n=13) and glassy phosphates (n=6, 21) provided a more effective viscosity reduction as compared to shorter chain phosphates such as tetrasodium pyrophosphate (n=2) and sodium tripolyphosphate (n=13). However, longer chain phosphates were found to be subject to age degradation, whereas short chains phosphates were not.