Magnesium dititanate (MgTi2O5) with pseudobrookite structure: a review

Abstract

Magnesium dititanate (MgTi₂O₅, MT₂) has been synthesized since the early 1930s. It has the pseudobrookite structure (general formula Me₃O₅), corresponding to the Mg-enriched artificial endmember of the Fe₂TiO₅ (pseudobrookite)–FeTi₂O₅ (ferropseudobrookite)–Mg_0.5Fe_0.5Ti₂O₅ (armalcolite) solid solution. Since MgTi₂O₅ has relativity high thermal stability among pseudobrookite-type phases, it is expected to be a well-balanced low-thermal-expansion material. Here we review both the historical and recent studies on MgTi₂O₅, particularly on its crystal structure, cation order–disorder, physical properties and synthesis methods.     

酸溶性钛渣改性试验研究

酸溶性钛渣中钙、镁的含量较高,不适合直接作为氯化法制备钛白粉的原料。本文研究了加入改性刑后,酸溶性钛渣物相结构的变化。酸溶性钛渣经改性后,主要物相由原来的板钛镁矿相（MgT_2O_5）变为金红石相（TiO_2）。     

酸溶性钛渣改性试验研究

酸溶性钛渣中钙、镁的含量较高,不适合直接作为氯化法制备钛白粉的原料。本文研究了加入改性刑后,酸溶性钛渣物相结构的变化。酸溶性钛渣经改性后,主要物相由原来的板钛镁矿相(MgT_2O_5)变为金红石相(TiO_2)。