Shear and compressive rheology of aggregated alumina suspensions

被引:145
作者
Channell, GM [1 ]
Zukoski, CF [1 ]
机构
[1] UNIV ILLINOIS,BECKMAN INST ADV SCI & TECHNOL,URBANA,IL 61801
关键词
D O I
10.1002/aic.690430707
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The shear and compressive properties of aggregated alumina particles are determined as functions of volume fraction and the strength of the interparticle attraction. Over a range of volume fractions, yield stresses, tau(y), elastic moduli, the strain delimiting the extent of the linear elastic response, and compressive yield stress, P-y, are well described by power-law functions of volume fraction, while the role of interparticle attractions can be accounted for by expressing these mechanical properties as (phi/phi(g) - 1)(n), where phi(g) captures the strength of particle attractions and n the microstructure. The links between compressive and shear properties are well described by linear elastic models where the P-y and tau(y) are a function of Poisson's ratio which, for the suspensions investigated has a value near 0.49.
引用
收藏
页码:1700 / 1708
页数:9
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