Microstructures and mechanical properties of dense particle gels: Microstructural characterisation

Schenker, Iwan and Filser, Frank and Aste, T. and Gauckler, Ludwig (2008) Microstructures and mechanical properties of dense particle gels: Microstructural characterisation. Journal of the European Ceramic Society, 28 (7). pp. 1443-1449. ISSN 09552219. (The full text of this publication is not available from this repository)

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Official URL
http://dx.doi.org/10.1016/j.jeurceramsoc.2007.12.0...

Abstract

The macroscopic mechanical properties of wet ceramic green bodies and densely packed coagulated colloidal particle gels strongly depend on the local arrangement of the powder particles on length scales of a few particle diameters. Heterogeneous microstructures exhibit up to one order of magnitude higher elastic properties and yield strengths than their homogeneous counterparts. The microstructures of these gels are analysed by the “straight path” method quantifying quasi-linear arrangements of particles. They show similar characteristics than force chains bearing the mechanical load in granular material. Applying this concept to gels revealed that heterogeneous colloidal microstructures show a significantly higher straight path density and exhibit longer straight paths than their homogeneous counterparts.

Item Type: Article
Uncontrolled keywords: Suspensions; Mechanical properties; Structure and microstructure; Granular matter
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: Tomaso Aste
Date Deposited: 20 Mar 2012 16:12
Last Modified: 30 May 2012 08:04
Resource URI: http://kar.kent.ac.uk/id/eprint/29179 (The current URI for this page, for reference purposes)
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