Nihon Reoroji Gakkaishi
Online ISSN : 2186-4586
Print ISSN : 0387-1533
ISSN-L : 0387-1533
Changes of Rheological Properties of Finely Particulated In2O3/SnO2 Sol Complex Suspensions in Mechanically Dispersing and Aging Processes
Takashi KAYUKAWAMamoru SENNA
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1995 Volume 23 Issue 1 Pages 21-26

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Abstract

Flow properties and aging mechanism were analyzed at three different pH, under simple Bingham approximation of steady flow, for complex suspensions containing finely powdered In2O3and SnO2 sol that was in situ precipitated during gridding processes. At pH 5, near isoelectric points of both oxides, gelation was mainly attributed to crosslinking of the pre-existing flocs. In contrast, increase in the viscosity during aging at pH 2 and 9.5 was mainly due to increase in effective floc volume. The total pore volume, median pore size, and Vickers hardness of slip cast body were found to be closely related with the change in the Bingham yield value during aging.

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© The Society of Rheology, Japan
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