Abstract

Sol-gel synthesis of transition metal oxides via polymerization of molecular precursors such as alkoxides provides an alternative path to produce ceramic materials at moderate temperatures which are homogeneous and non-porous with high mechanical strength. Stabilization of sol is one of the critical factors in controlling the strucure of the final products and their processing properties. Parameters such as temperature, catalysts and additives are known to change the content of water in titanium tetra isobutoxide (TTIB) sol and hence the stability of the sol. Here some preliminary results are reported on how agitation techniques can stabilize TTIB sol with higher water/TTIB ratio.

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