The crystal structure and properties of potassium titanates, K₂Ti_nO_2n+1 (n = 1-8), are dependent on the value of n. Characteristic of potassium titanates with high potassium content is the existence of a layer structure, and they show a distinctive intercalation ability and catalytic activity. However, in the case of potassium titanates with a low potassium content, they have a tunnel structure and exhibit high thermal insulating ability and chemical stability.

Potassium titanates fibers and whiskers with high mechanical properties and thermal resistance are interesting for industrial applicatons as new and promising fillers for polymer and Al-based alloy composites. Among the whiskers, potassium titanate whiskers have several benefits compared with other ceramic whiskers. One of the most desirable features is the low cost of the whiskers itself.

In the first stage of the present work, K₂Ti₄O₉ and K₂Ti₆O₁₃ whiskers were synthesized by the calcination and slow-cooling method under specific conditions. Powder XRD analysis was used to study the formation of potassium titanates. The charaterization of the whiskers was carried out by means SEM.

In the second stage polycrystalline samples of K₂Ti₄O₉ and K₂Ti₆O₁₃ were prepared by heating a mixtures of K₂CO₃ and TiO₂ at 850ºC for 1h. The powder products obtained from the thermal treatment were used to produce potassium titanate ceramics. Tabletes were prepared in green state with a static pressure, 10 or 50 MPa, respectively. The sintering temperature was selected considering the temperature resistance of potassium titanates (1000-1200ºC). Absorbability, open porosity and apparent density of the tablets after sintering were determined by Archimedes method.

As a result, a sintered body of K₂Ti₄O₉ or K₂Ti₆O₁₃ with porous and fibrous textures was prepared. It is expected that the sintered body having such a texture would be suitable for the application of fibre-reinforced plastic and metal.

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