Akademik Veri Yönetim Sistemi
Ceramics International, cilt.51, sa.25PB, ss.45448-45458, 2025 (SCI-Expanded)
The use of advanced ceramics is expanding across several industrial sectors due to technological advancements and the development of novel compositions. These advancements include enhancing the mechanical strength of ceramics, which are often resistant to corrosion and thermal characteristics. Aluminum titanate (AT, Al2TiO5), often referred to as “Tialite” ceramics, belongs to the category of thermal insulators and exhibits exceptional resistance to thermal shocks. Despite possessing favorable thermal characteristics, the mechanical qualities are inadequate for applications demanding great strength. This study aims to improve the mechanical properties of AT ceramics through the addition of various oxide dopants and optimization of sintering conditions. Several compositions were prepared by adding single, dual, or triple combinations of MgO, SiO2, Fe2O3, Cr2O3, ZnO, and MoO3 to stoichiometric AT. The samples were sintered at 1500 °C and 1550 °C for 3 and 6 h. Bulk density, total porosity, Vickers hardness, and compressive strength were measured. ATSMC exhibited the highest compressive strength (∼55 MPa) and hardness (1423 HV), with significantly reduced porosity (18 %). XRD combined with Rietveld refinement and SEM/EDX analyses confirmed that oxide additions enhance densification and phase stability. The results indicate that the selection of appropriate dopants and the optimization of sintering parameters can significantly enhance the compressive strength of aluminum titanate ceramics. The highest value (∼55 MPa) represents a significant improvement in aluminum titanate ceramics tested under compressive loading, where limited prior research exists compared to flexural strength evaluations.