In $Al_2O_3$ suspensions, depending on the experimental conditions, very different microstructures can be found, comprising fluidlike suspensions, a repulsive structure, and a clustered microstructure. For technical processing in ceramics, the knowledge of the microstructure is of importance, since it essentially determines the stability of a workpiece to be produced. To enlighten this topic, we investigate these suspensions under shear by means of simulations. We observe cluster formation on two different length scales: the distance of nearest neighbors and on the length scale of the system size. We find that the clustering behavior does not depend on the length scale of observation. If interparticle interactions are not attractive the particles form layers in the shear flow. The results are summarized in a stability diagram.
%0 Journal Article
%1 PhysRevE.75.051404
%A Hecht, Martin
%A Harting, Jens
%A Herrmann, Hans J.
%D 2007
%I American Physical Society
%J Phys. Rev. E
%K daad dfg for371 hlrs icp jsc
%N 5
%P 051404
%R 10.1103/PhysRevE.75.051404
%T Stability diagram for dense suspensions of model colloidal $Al_2O_3$ particles in shear flow
%U https://link.aps.org/doi/10.1103/PhysRevE.75.051404
%V 75
%X In $Al_2O_3$ suspensions, depending on the experimental conditions, very different microstructures can be found, comprising fluidlike suspensions, a repulsive structure, and a clustered microstructure. For technical processing in ceramics, the knowledge of the microstructure is of importance, since it essentially determines the stability of a workpiece to be produced. To enlighten this topic, we investigate these suspensions under shear by means of simulations. We observe cluster formation on two different length scales: the distance of nearest neighbors and on the length scale of the system size. We find that the clustering behavior does not depend on the length scale of observation. If interparticle interactions are not attractive the particles form layers in the shear flow. The results are summarized in a stability diagram.
@article{PhysRevE.75.051404,
abstract = {In ${\mathrm{Al}}_{2}{\mathrm{O}}_{3}$ suspensions, depending on the experimental conditions, very different microstructures can be found, comprising fluidlike suspensions, a repulsive structure, and a clustered microstructure. For technical processing in ceramics, the knowledge of the microstructure is of importance, since it essentially determines the stability of a workpiece to be produced. To enlighten this topic, we investigate these suspensions under shear by means of simulations. We observe cluster formation on two different length scales: the distance of nearest neighbors and on the length scale of the system size. We find that the clustering behavior does not depend on the length scale of observation. If interparticle interactions are not attractive the particles form layers in the shear flow. The results are summarized in a stability diagram.},
added-at = {2023-10-15T17:47:55.000+0200},
author = {Hecht, Martin and Harting, Jens and Herrmann, Hans J.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2eb39052ec487f826d083b7a7f35a2a88/lorisburth},
doi = {10.1103/PhysRevE.75.051404},
interhash = {5637010bbf6fbf422cff569317e47732},
intrahash = {eb39052ec487f826d083b7a7f35a2a88},
journal = {Phys. Rev. E},
keywords = {daad dfg for371 hlrs icp jsc},
month = may,
number = 5,
numpages = {11},
pages = 051404,
publisher = {American Physical Society},
timestamp = {2023-10-15T17:47:55.000+0200},
title = {Stability diagram for dense suspensions of model colloidal ${\mathrm{Al}}_{2}{\mathrm{O}}_{3}$ particles in shear flow},
url = {https://link.aps.org/doi/10.1103/PhysRevE.75.051404},
volume = 75,
year = 2007
}
