The effect of contact torques on porosity of cohesive powders

Details The effect of contact torques on porosity of cohesive powders The effect of contact torques on porosity of cohesive powders

2004-03-03

arxiv.org/abs/cond-mat/0403110v1

Granular Matter, Volume 7, Numbers 2-3, 2005, Pages 139 - 143

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 5 figures

Scientific paper

10.1007/s10035-004-0184-8

The porosity of uniaxially compacted cohesive powders depends on the applied stress (including gravity). The case, where these stresses are weak, is considered. The compaction results in a porosity which is a function of sliding, rolling and torsion friction. By contact dynamics simulations it is shown that the influences of contact torques (static rolling and torsion friction) on the porosity are significant and approximately additive. The relevance for nano-powder pressure sintering is discussed.

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