Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2006-06-16
Phys. Rev. E 75 (5), 051404, (2007)
Physics
Condensed Matter
Soft Condensed Matter
15 pages, 10 figures, revised version
Scientific paper
10.1103/PhysRevE.75.051404
In Al2O3 suspensions, depending on the experimental conditions very different microstructures can be found, comprising fluid like 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 inter-particle interactions are not attractive the particles form layers in the shear flow. The results are summarized in a stability diagram.
Harting Jens
Hecht Martin
Herrmann Hans Jürgen
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