Ti2SiO7

Titanium disilicate, with the chemical formula Ti2SiO7, is a ceramic material belonging to the family of refractory oxides. It is characterized by its high melting point and good chemical stability, making it a candidate for high-temperature applications. The crystal structure of Ti2SiO7 is known to be complex, often exhibiting polymorphism depending on synthesis conditions. It can exist in different phases, with the gamma (γ) phase being one of the more commonly studied forms. These phases have distinct crystallographic arrangements and properties. Synthesis of Ti2SiO7 typically involves high-temperature solid-state reactions between titanium and silicon precursors, such as titanium dioxide (TiO2) and silicon dioxide (SiO2), or through sol-gel methods. The resulting material is often a white or off-white powder. Its thermal expansion coefficient is relatively low, which contributes to its thermal shock resistance. Research has explored Ti2SiO7 for its potential use in refractories, thermal barrier coatings, and as a component in advanced ceramic composites due to its inherent thermal and chemical inertness. However, challenges in achieving phase purity and controlling microstructure can impact its performance in specific applications.