The Characterisation of Aqueous Silicon Slips

Rao, R Ramachandra and Roopa, HN and Kannan, TS (1999) The Characterisation of Aqueous Silicon Slips. Journal of the European Ceramic Society, 19. pp. 2763-2771.

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Abstract

The optimum conditions of aqueous silicon slips for slip13; casting was achieved by employing various experimental13; techniques like zeta potential, /fl size13; distribution, sedimentation, viscosity and rheological13; measurements as a function of pH of the slips in the pH range of 2-11. Silicon suspensions display a maximum in zeta potential values and a minimum in sedimentation height and viscosity in two pH regions of 4-5 and 8. The slips behaved as near-newtonian at these pH values up to a solid loading of 52 wt% and as non-newtonian with thixotropic behaviour above this solid loading. Samples with highest green density (68%) were produced from 72 wt% solid loaded slips which were conditioned at a pH of 8 and milled for 26 h. The cast bodies of these slips were nitrided to obtain reaction bonded silicon nitride products which were also characterised.13;

Item Type: Article
Additional Information: Copyright belongs to Elsevier Science Ltd.
Uncontrolled Keywords: Rheology;Slip casting;Suspension;Si 3N4;Silicon.
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Users 20 not found.
Date Deposited: 08 Jun 2006
Last Modified: 03 May 2012 10:45
URI: http://nal-ir.nal.res.in/id/eprint/1503

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