Older Research


Microstructure and Rheology of Ceramic Suspensions and Gels


What is the relation between microscopic structure and macroscopic mechanical behavior?

We investigate this relation for ceramic suspensions and gels. In ceramic processing, both properties are crucial elements that determine the strength and toughness of the sintered ceramic body.

Packed alumina powder.

Silica spheres of uniform size.




Collaborators

Elena Tervoort, Lorenz Meier, Martin Müller, Ludwig Gauckler (ETH Zurich, Switzerland)
Sara Romer, Hugo Bissig, Veronique Trappe, Peter Schurtenberger (University of Fribourg, Switzerland)
Josef Innerlohinger, Otto Glatter (KF-University, Graz, Austria)

Publications

  • “Mechanics and Microstructures of Concentrated Colloidal Gels”
    H. M. Wyss, E. Tervoort, and L. J. Gauckler
    Journal of the American Ceramic Society 88 (9) 2337 (2005)

  • “Influence of microstructure on the rheological behavior of dense particle gels”
    H. M. Wyss, A. M. Deliormanli, E. Tervoort, and L. J. Gauckler
    AIChE Journal 51 (1) p. 134 (2004)

  • “Colloidal systems with attractive interaction: Evaluation of scattering data using the generalized indirect fourier transformation method.”
    J. Innerlohinger, H. M. Wyss, and O. Glatter
    Journal of Physical Chemistry B 108 (47) p. 18149 (2004)

  • “Relation between microstructure and mechanical behavior of concentrated silica gels”
    H. M. Wyss, E. Tervoort, L. P. Meier, M. Müller, and L. J. Gauckler
    Journal of Colloid and Interface Science 273 (2) p. 455 (2004)

  • “Small-angle static light scattering of concentrated silica suspensions during in situ destabilization”
    H. M. Wyss, J. Innerlohinger, L. P. Meier, L. J. Gauckler, and O. Glatter
    Journal of Colloid and Interface Science 271 (2) p. 388 (2004)

  • “Direct coagulation casting via increasing ionic strength”
    J. Yang, Y. Huang, L. P. Meier, H. M. Wyss, E. Tervoort, and L. J. Gauckler
    Key Engineering Materials 224 (2) p. 631 (2002)

  • “Quantification of microstructures in stable and gelated suspensions from Cryo-SEM”
    H. M. Wyss, M. Hütter, M. Müller, L. P. Meier, and L. J. Gauckler
    Journal of Colloid and Interface Science 248 (2) p. 340 (2002)

  • “Diffusing-wave spectroscopy of concentrated alumina suspensions during gelation”
    H. M. Wyss, S. Romer, F. Scheffold, P. Schurtenberger, and L. J. Gauckler
    Journal of Colloid and Interface Science 241 p. 89 (2001)