Effect of TiO2 on Porous Mullite-Alumina Ceramics
Author Information
Author(s): Mahnicka-Goremikina Ludmila, Rundans Maris, Goremikins Vadims, Svinka Ruta, Svinka Visvaldis, Orlova Liga, Juhnevica Inna
Primary Institution: Riga Technical University
Hypothesis
The study investigates how microsize and nanosize TiO2 affect the properties and formation of porous mullite-alumina ceramics.
Conclusion
The addition of TiO2 significantly enhances the porosity and modifies the microstructure of the mullite-alumina ceramics.
Supporting Evidence
- The apparent porosity of the modified ceramics ranged from 52% to 69%.
- The use of nanosize TiO2 increased the porosity and decreased the bulk density.
- The study demonstrated that TiO2 acts as a sintering additive and nucleating agent.
- XRD analysis showed an increase in the mullite phase with higher TiO2 content.
- The ceramics were produced using an environmentally friendly method without harmful emissions.
Takeaway
This study shows that adding tiny bits of titanium dioxide can make special ceramics that are really good at holding air and are useful for things like filters.
Methodology
The ceramics were prepared using slip casting with kaolin, Al2O3, SiO2, and TiO2, followed by sintering at high temperatures.
Limitations
The study does not address the long-term durability of the ceramics in practical applications.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website