Abstract
Aluminium titanate (Al2TiO5)-reinforced forsterite (Mg2SiO4) ceramics were prepared by the powder metallurgy route including sintering the Al2TiO5-reinforced Mg2SiO4 green compacts at 1600 °C. Sivas talc (3MgO.4SiO2·H2O) was used as a precursor for the Mg2SiO4 ceramics due to its excellent mechanical properties like thermal shock and abrasion resistance. In order to investigate thermal shock resistance behaviour, the as-prepared samples were quenched in water and assessed. Investigations were carried out to study the effect of Al2TiO5 addition on microstructural, physical, thermal and mechanical properties of Al2TiO5-reinforced Mg2SiO4 ceramic composites. The thermal and mechanical properties were examined before and after thermal shock tests. The results showed that the best thermal expansion coefficient (0.76 × 10−6 (K−1)) and thermal shock resistance (6.82 GPa) of the Al2TiO5-reinforced forsterite (Mg2SiO4) ceramic composites were obtained after thermal shock test, which were better than those of the other concentrations of the Al2TiO5-reinforced forsterite (Mg2SiO4) ceramic composites. These findings suggest that 20 wt% Al2TiO5-reinforced forsterite (Mg2SiO4) ceramic composites possess good thermomechanical properties and thus might be suitable for potential applications such as filter material, pharmaceuticals, cosmetic manufacturing, optical, and chemical devices.
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