Abstract
The electrophoretic mobility of ZrO2 particles stabilized with 3 mol % of yttria recorded at different pH is known to vary as a function of time. The cause of the shift in the surface charge was investigated since it is known to influence a range of important properties controlling the slip casting of ceramic green bodies. It was found that yttrium and some zirconium ions are leached out from the powder surface both in the acid and the basic range, but that the dissolution of yttrium is particularly pronounced in acidic dispersions. As a result, the pH of the dispersions are buffered to values around 5.5. The buffering effect is found to be effective over a period of a few days. The leached yttrium ions influences the electrophoretic mobility, the particle size, the stability of the dispersions against coagulation and the viscous flow. The results are compared with pH and EM values measured on some other commercial ZrO2 powders.
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References
Rich RL (1985) J Chem Educ 62:44
Bergström L, Pugh RJ (1989) J Am Ceram Soc 72:103
Bergström L, Bostedt E (1990) Colloids and Surfaces 49:183
Persson M (1989) Thesis Chalmers University of Technology, Göteborg, Sweden
Fagerholm H, Johansson LS, Rosenholm JB, J European Ceramic Soc, in press
Hiemenz PC (1986) “Principles of Colloid and Surface Chemistry”, 2nd Ed., Ch. 13 p. 737, Marcel Dekker Inc., New York
Allen T (1975) “Particle Size Measurements”, 3rd Ed. Chapman and Hall, London
Merck Index, 10th Ed., p. 1460 Merck Co Inc Rachway, New Jersey
Collins KD, Washabaugh MW (1985) Quart Rev Biophysics 18:323
Jensen WB (1991) in “Acid-Base Interactions: Relevance to Adhesion Science and Technology”, (KL Mittal and HR Anderson, Jr, Eds), p. 3, VSP BV Utrecht, The Netherlands
Fowkes FM (1987) J Adhesion Sci & Tech 1:7
van Oss, CJ, Chaudhury MK, Good RJ, (1988) Chem Rev 88:927
van Oss Giese RF, Costanzo PM (1990) Clays & Clay Min 38:151
Pettersson ABA, Byman-Fagerholm H Rosenholm JB (1992) In: “Ceramic Materials and Components for Engines”, (Carlsson R, Johansson T, Kahlman L, (Eds) Elsevier Appl Sci Publ Essex, England
Lidén E, Persson M, Carlström E, Carlsson R (1991) J Am Ceram Soc 74:1335
Grönroos L, unpublished results
Byman-Fagerholm, Rosenholm JB, Lidén E, Carlsson R (to be published)
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© 1994 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
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Rosenholm, J.B., Manelius, F., Fagerholm, H., Grönroos, L., Byman-Fagerholm, H. (1994). Surface and bulk properties of yttrium stabilized ZrO2 powders in dispersions. In: Ottewill, R.H., Rennie, A.R. (eds) Trends in Colloid and Interface Science VIII. Progress in Colloid & Polymer Science, vol 97. Steinkopff. https://doi.org/10.1007/BFb0115135
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DOI: https://doi.org/10.1007/BFb0115135
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