Advertisement

Effect of Additives on the Dispersion and Electrophoretic Deposition of Highly Diluted Enamel Suspensions

  • M. Dignatici
  • A. Chavez-Valdez
  • F. Andreola
  • C. Siligardi
  • A. R. Boccaccini
High-Performance Ceramics

Abstract

This work examines the rheological behaviour of aqueous highly diluted suspensions (1 mass-%) to identify additives that may improve the application of vitreous enamel coatings by electrophoretic deposition (EPD). Slurries for EPD were prepared by ball milling frit glass in water with suspending agents. The effect of different additives in the solids concentration range from 0.2 to 2.0 mass-% on the rheological properties of coating solutions was investigated using rotational rheometry and zeta potential measurements. Different sedimentation times were observed for the tested dispersant, binder and coagulator additives. Densicer, an organic-inorganic mix additive, showed the best properties in terms of suspension stability. The high zeta potential measured with this product confirms its potential suitability as a suspension additive for vitreous enamel coatings applied by EPD.

Keywords

EPD zeta potential vitreous enamel diluted suspensions rheology 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Sarkar, P., Nicholson, P.S.: Electrophoretic sedimentation (EPD): Mechanism, kinetics and application to ceramics. J. Am. Ceram. Soc. 79 (1996) 1987–2002CrossRefGoogle Scholar
  2. [2]
    Boccaccini, A.R., Zhitomirsky, I.: Application of electrophoretic and electrolytic sedimentation techniques in ceramics processing. Curr. Opin. Solid State Mater. Sci. 6 (2002) 251–260CrossRefGoogle Scholar
  3. [3]
    Van der Biest, O.O., Vandeperre, L.J.: Electrophoretic sedimentation of materials. Ann. Rev. Mater. Sci. 29 (1999) 327–352CrossRefGoogle Scholar
  4. [4]
    Gebhardt, F., Seuss, S., Turhan, M.C. Hornberger, H., Virtanen, S., Boccaccini, A.R.: Characterization of electrophoretic chitosan coatings on stainless steel. Mat. Lett. 66 (2012) 302–304CrossRefGoogle Scholar
  5. [5]
    Ferrari, B., Gonzalez, S., Moreno, R., Baudìn C.: Multilayer coatings with improved reliability produced by aqueous electrophoretic sedimentation. J. Europ. Ceram. Soc. 26 (2006) 27–36CrossRefGoogle Scholar
  6. [6]
    Besr, L., Liu, M.: A review on fundamentals and applications of electrophoretic sedimentation (EPD). Progress in Mater. Sci. 52 (2007) 1–61CrossRefGoogle Scholar
  7. [7]
    Guven, N., Pollastro, R.M. (Eds.): Molecular aspects of aqueous smectite suspensions in clay-water interface and its rheological implications. Clay Minerals Society Workshop Lectures, Clay Min. Soc., Boulder, Colorado 4 (1992) 2–79Google Scholar
  8. [8]
    Shankar, P., Teo, J., Leong, Y.K., Fourie, A., Fahey, M.: Adsorbed phosphate additives for interrogating the nature of interparticles forces in kaolin clay slurries via rheological yield stress. Adv. Powder Techn. 21 (2010) 380–385CrossRefGoogle Scholar
  9. [9]
    Caballero, E., Jimenez de Cisneros, C.: Hydration properties of bentonites from Cabo de Gata (SE, Spain). Isotopic study (18O/16O; 2H/H) of the hydration water. Chemie der Erde 71 (2011) 389–395CrossRefGoogle Scholar
  10. [10]
    Jiang, G.P., Yanga, J.F., Gao, J.Q., Niihara, K.: Characterization of porous silicon nitride ceramics using bentonite as binder and sintering additive. Mater. Characterization 60 (2009) 456–460CrossRefGoogle Scholar
  11. [11]
    Lapasin, R.: Scuola di Reologia Ceramica. Ed. DICAMP — Università di Trieste (2008)Google Scholar
  12. [12]
    Morrison, I.D., Ross, S.: Colloidal dispersions; suspensions, emulsions and foams. John Wiley & Sons, New York (2002) 420–455. ISBN: 0-4712-1923-1Google Scholar
  13. [13]
    Bergstrom, L.: Rheology of concentrated suspensions. In: R. Pugh and L. L. Bergstrom (Eds.): Surfactant and colloid chemistry in ceramic processing. Sweden (1994) [51] 193–244 ISBN: 0-8247-9098-7Google Scholar
  14. [14]
    Corni, I., Ryan, M. P., Boccaccini A.R.: Electrophoretic deposition: From traditional ceramics to nanotechnology. J. Europ. Ceram. Soc. 28 (2008) 1353–1367CrossRefGoogle Scholar
  15. [15]
    Besra, L., Liu, M.: A review of fundamentals and application of electrophoretic deposition. Progr. in Mater. Sci. 52 (2007) [1] 1–61CrossRefGoogle Scholar

Copyright information

© Springer Fachmedien Wiesbaden 2015

Authors and Affiliations

  • M. Dignatici
    • 1
  • A. Chavez-Valdez
    • 2
  • F. Andreola
    • 1
  • C. Siligardi
    • 1
  • A. R. Boccaccini
    • 3
  1. 1.Department of Engineering “Enzo Ferrari”University of Modena and Reggio EmiliaModenaItaly
  2. 2.Katcon Institute for Innovation and Technology (KIIT)ApodacaMexico
  3. 3.Department of Material Science and EngineeringUniversity of Erlangen-NurembergErlangenGermany

Personalised recommendations