Titanium oxide has three crystal forms in nature: rutile type, anatase type, and plate type. The plate titanium type belongs to the rhombic crystal system and is an unstable crystal form that can be transformed into a rutile type above 650 ℃, therefore it has no practical value in industry. The anatase type is stable at room temperature, but needs to transform into a rutile type at high temperatures. The conversion strength depends on the manufacturing method and whether inhibitors or accelerators are added during the calcination process.
