**7. Conclusion**

The evident effect of FeTiO3 additions on Al2TiO5 was established. An increase of the addition leads to a sensitive decrease on decomposition, this is due to the expected solid solution formed between Al2TiO5 and the isostructural Fe2TiO5, the latter being the product of ilmenite decomposition in the oxidizing conditions used.

The ilmenites additions produce a slightly increase in the thermal expansion coefficients being more important with the concentrated mineral addition. Although the values remain acceptable.

The MnO increases densification by the presence of a localized liquid phase, which allows the rearrangement of particles in the first stage of sintering and also slightly decomposition controls.The ferrosilicon (FeSi2.SiO2), SiO2 reacts with Al2O3 and the TiO2 forming a liquid phase, allowing rearrangement of particles; however, it lacks of stabilizing effect.
