Effect of Mg2+-and Fe3+-ions on formation mechanism of aluminium titanate

The presence of Mg2+- and Fe3+-ions has an effect on the formation of Al2TiO5. Crystalline phases produced under the influence of the heat treatment have been identified in a heated X-ray diffraction chamber in the temperature range of 20–1500 °C. In the presence of Mg2+- and Fe3+-ions transitional phases are formed in the temperature range of 1000–1350 °C during Al2TiO5 formation. The XRD technique was used to identify the crystalline phases formed. On addition of MgO, chemical composition of the transitional phase formed is Mg0.3Al1.4Ti1.3O5, whereas on addition of Fe2O3 we have calculated a Powder Diffraction File card data for the transitional phase. Determination of the lattice parameters of the Al2TiO5 ceramics produced enabled verification of incorporation of Mg2+- or Fe3+-ions into the crystal lattice of Al2TiO5, i.e. the formation of Mg2+- and Fe3+-containing solid solutions.