Abstract
The coarsening of nominally nwnodisperscd, ∼0.35‐μm‐diameter titania powders produced by controlled hydrolysis of titanium tetraethoxide was studied. Thermal treatments prior to coarsening experiments had a minimal effect on the apparent particle size distribution, but significantly modified the coarsening behavior and microstructural characteristics. Explanations attributing these differences to the effects of preannealing on the microstructure (grain size and phase composition) within particles are proposed.
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