In this thesis I focused on the preparation of the ceramic compound aluminium-calcium titanate(IV) (abrev. CTA) and on the subsequent structural characterization, since past studies could not clearly conclude its composition. Its structure has also not yet been determined.
Regarding the preparation of CTA, I limited myself to a synthesis in the form of burning well ground reactants (sintering) as well as forming a solid mixture of reactants from a liquid solution using precipitation (so-called wet chemical synthesis) and subsequently sintering it. To ensure better conversion I followed the reaction stoichiometry of two possible element compositions of CTA, these being CaTi3Al8O19 and Ca3Ti8Al12O37.
For the characterization of CTA, we used X-ray powder diffraction (XRPD) and surface analysis with a scanning electron microscope (SEM). I performed qualitative phase analysis by program CSM. For the quantitative phase analysis and structure determination of CTA I used Topas program. ATOMS program was used for the presentation of structure of CTA. With the help of SEM microscopy with EDS analysis I determined the elemental composition of phases in the selected samples. Both, the results of EDS analysis of CTA and its structure determination confirm the formula CaTi3Al8O19.
During the analyses I often noticed the presence of an unknown phase, which I didn't manage to identify. Its diffraction pattern was very similar to those of CaTi(3-x)ZrxO7 compounds. Whether zirconium in some way really entered in the system during repeated sintering, or whether it is an as yet unknown substance with a similar structure, will be a matter of future studies.